Is ISABELA required to publish a Consumer Confidence Report?

Yes. ISABELA is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.

When is ISABELA’s next Consumer Confidence Report due?

ISABELA’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

SANTURCE, PR · Isabela Municipio County

ISABELA Water System

Consumer Confidence Report status

ISABELA must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.

As of August 1, 2026, EPA's federal records show no open violations for ISABELA.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Puerto Rico’s official records. Always confirm current status with Puerto Rico before making decisions based on this information.

System facts

System ID (PWSID): PR0002672
System type: Community Water System
Population served: 49,937
Service connections: 18,703
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

ISABELA is among the 11 largest community water systems in Puerto Rico, serving 49,937 people from surface water.

As of August 1, 2026, its federal record holds 219 entries between 1992 and 2020, all of which EPA lists as closed. Nothing has been added since 2020.

Of the 219, 79 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves the Surface Water Treatment Rules, the Stage 1 Disinfectants and Disinfection Byproducts Rule, and volatile organic chemicals.

Violation history

Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2020 – July 29, 2020
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
February 1, 2019 – February 28, 2019
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
October 1, 2018 – August 13, 2019
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
June 1, 2018 – June 30, 2018
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
April 1, 2018 – June 30, 2018
Resolved
Maximum Contaminant Level Violation, E. coli (RTCR)
Health-based
Revised Total Coliform Rule
March 1, 2018 – March 31, 2018
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2018 – March 31, 2018
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
January 1, 2018 – March 31, 2018
Resolved
Monitoring, Source Water (LT2)
—
E. COLI
August 1, 2017 – August 31, 2017
Resolved
Monitoring, Source Water (LT2)
—
Turbidity
August 1, 2017 – August 31, 2017
Resolved
Monitoring, Source Water (LT2)
—
Cryptosporidium
August 1, 2017 – August 31, 2017
Resolved
Monitoring, Source Water (LT2)
—
Cryptosporidium
July 1, 2017 – July 31, 2017
Resolved
Monitoring, Source Water (LT2)
—
E. COLI
July 1, 2017 – July 31, 2017
Resolved
Monitoring, Source Water (LT2)
—
Turbidity
July 1, 2017 – July 31, 2017
Resolved
Monitoring, Source Water (LT2)
—
E. COLI
June 1, 2017 – June 30, 2017
Resolved
Monitoring, Source Water (LT2)
—
Turbidity
June 1, 2017 – June 30, 2017
Resolved
Monitoring, Source Water (LT2)
—
Cryptosporidium
June 1, 2017 – June 30, 2017
Resolved
Monitoring, Source Water (LT2)
—
Cryptosporidium
May 1, 2017 – May 31, 2017
Resolved
Monitoring, Source Water (LT2)
—
Turbidity
May 1, 2017 – May 31, 2017
Resolved
Monitoring, Source Water (LT2)
—
E. COLI
May 1, 2017 – May 31, 2017
Resolved
Monitoring, Source Water (LT2)
—
Cryptosporidium
February 1, 2017 – February 28, 2017
Resolved
Monitoring, Source Water (LT2)
—
E. COLI
February 1, 2017 – February 28, 2017
Resolved
Monitoring, Source Water (LT2)
—
Turbidity
February 1, 2017 – February 28, 2017
Resolved
Monitoring, Source Water (LT2)
—
Cryptosporidium
January 1, 2017 – January 31, 2017
Resolved
Monitoring, Source Water (LT2)
—
E. COLI
January 1, 2017 – January 31, 2017
Resolved
Monitoring, Source Water (LT2)
—
Turbidity
January 1, 2017 – January 31, 2017
Resolved
Monitoring, Source Water (LT2)
—
Cryptosporidium
August 1, 2016 – August 31, 2016
Resolved
Monitoring, Source Water (LT2)
—
E. COLI
August 1, 2016 – August 31, 2016
Resolved
Monitoring, Source Water (LT2)
—
Turbidity
August 1, 2016 – August 31, 2016
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2016 – September 30, 2016
Resolved
Monitoring, Routine (IDSE)
—
Total Haloacetic Acids (HAA5)
January 1, 2016 – March 31, 2016
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
January 1, 2016 – December 31, 2018
Resolved
Monitoring, Routine (IDSE)
—
TTHM
January 1, 2016 – March 31, 2016
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2016 – March 31, 2016
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2015 – December 31, 2015
Resolved
Monitoring, Routine (IDSE)
—
Total Haloacetic Acids (HAA5)
October 1, 2015 – December 31, 2015
Resolved
Monitoring, Routine (IDSE)
—
TTHM
October 1, 2015 – December 31, 2015
Resolved
Monitoring, Routine (IDSE)
—
TTHM
October 1, 2014 – December 31, 2014
Resolved
Monitoring, Routine (IDSE)
—
Total Haloacetic Acids (HAA5)
October 1, 2014 – December 31, 2014
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2014 – August 11, 2014
Resolved
Monitoring, Routine (IDSE)
—
TTHM
April 1, 2014 – June 30, 2014
Resolved
Monitoring, Routine (IDSE)
—
Total Haloacetic Acids (HAA5)
April 1, 2014 – June 30, 2014
Resolved
Monitoring, Routine (IDSE)
—
TTHM
October 1, 2013 – December 31, 2013
Resolved
Monitoring, Routine (IDSE)
—
Total Haloacetic Acids (HAA5)
October 1, 2013 – December 31, 2013
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 2013 – October 31, 2013
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
July 1, 2012 – December 31, 2018
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
April 1, 2010 – March 30, 2009
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
October 1, 2009 – October 31, 2009
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
September 1, 2008 – September 30, 2008
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
July 1, 2008 – July 31, 2008
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Simazine
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Atrazine
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
LASSO
April 1, 2008 – June 30, 2008
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
December 1, 2007 – December 31, 2007
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2007 – September 30, 2007
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
July 1, 2007 – September 30, 2007
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
June 1, 2007 – June 30, 2007
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
May 1, 2007 – May 31, 2007
Archived
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
April 1, 2007 – June 30, 2007
Resolved
Monitoring, Regular
—
CHLOROBENZENE
April 1, 2007 – June 30, 2007
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2007 – June 30, 2007
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
April 1, 2007 – April 30, 2007
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
March 1, 2007 – March 31, 2007
Archived
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
January 1, 2007 – March 31, 2007
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2007 – March 31, 2007
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
January 1, 2007 – March 31, 2007
Archived
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
January 1, 2007 – March 31, 2007
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
October 1, 2006 – December 31, 2006
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
October 1, 2006 – December 31, 2006
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
October 1, 2006 – October 31, 2006
Archived
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
October 1, 2006 – December 31, 2006
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2006 – September 30, 2006
Archived
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
July 1, 2006 – September 30, 2006
Archived
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
July 1, 2006 – September 30, 2006
Archived
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
July 1, 2006 – September 30, 2006
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
July 1, 2006 – July 31, 2006
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
June 1, 2006 – June 30, 2006
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
May 1, 2006 – May 31, 2006
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
April 1, 2006 – April 30, 2006
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2006 – June 30, 2006
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
April 1, 2006 – June 30, 2006
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
April 1, 2006 – June 30, 2006
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
March 1, 2006 – March 31, 2006
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
February 1, 2006 – February 28, 2006
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2006 – March 31, 2006
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
January 1, 2006 – January 31, 2006
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
December 1, 2005 – December 31, 2005
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
November 1, 2005 – November 30, 2005
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
November 1, 2005 – November 30, 2005
Archived
Monitoring, Regular
—
Ethylbenzene
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Xylenes, Total
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Vinyl chloride
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Carbon tetrachloride
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Trichloroethylene
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Tetrachloroethylene
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
CHLOROBENZENE
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Benzene
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Toluene
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Styrene
October 1, 2005 – December 31, 2005
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
October 1, 2005 – October 31, 2005
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
October 1, 2005 – October 31, 2005
Archived
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
October 1, 2005 – December 31, 2005
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
October 1, 2005 – December 31, 2005
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2005 – December 31, 2005
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
September 1, 2005 – September 30, 2005
Archived
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
August 1, 2005 – August 31, 2005
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 2005 – August 31, 2005
Archived
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
July 1, 2005 – September 30, 2005
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2005 – September 30, 2005
Archived
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
July 1, 2005 – September 30, 2005
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
June 1, 2005 – June 30, 2005
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
May 1, 2005 – May 31, 2005
Archived
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
April 1, 2005 – June 30, 2005
Archived
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
April 1, 2005 – June 30, 2005
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2005 – June 30, 2005
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
April 1, 2005 – April 30, 2005
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
March 1, 2005 – March 31, 2005
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
February 1, 2005 – February 28, 2005
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
January 1, 2005 – January 31, 2005
Archived
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
January 1, 2005 – March 31, 2005
Archived
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
January 1, 2005 – March 31, 2005
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2005 – March 31, 2005
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
December 1, 2004 – December 31, 2004
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
November 1, 2004 – November 30, 2004
Archived
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
October 1, 2004 – December 31, 2004
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2004 – December 31, 2004
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
October 1, 2004 – October 31, 2004
Archived
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
October 1, 2004 – October 31, 2004
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
August 1, 2004 – August 31, 2004
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
July 1, 2004 – July 31, 2004
Archived
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
July 1, 2004 – September 30, 2004
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
May 1, 2004 – May 31, 2004
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
April 1, 2004 – April 30, 2004
Archived
Monitoring and Reporting (DBP)
—
TTHM
April 1, 2004 – March 31, 2005
Archived
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
January 1, 2004 – March 31, 2004
Archived
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
January 1, 2004 – March 31, 2004
Archived
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
October 1, 2003 – December 31, 2003
Archived
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
October 1, 2003 – December 31, 2003
Archived
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
July 1, 2003 – September 30, 2003
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
June 1, 2003 – June 30, 2003
Archived
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
April 1, 2003 – June 30, 2003
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
April 1, 2003 – April 30, 2003
Archived
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
April 1, 2003 – June 30, 2003
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
March 1, 2003 – March 31, 2003
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
February 1, 2003 – February 28, 2003
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
December 1, 2002 – December 31, 2002
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
November 1, 2002 – November 30, 2002
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
October 1, 2002 – October 31, 2002
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
June 1, 2002 – June 30, 2002
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
April 1, 2002 – April 30, 2002
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
February 1, 2002 – February 28, 2002
Archived
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
September 1, 2001 – September 30, 2001
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
September 1, 2001 – September 30, 2001
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
August 1, 2001 – August 31, 2001
Archived
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
August 1, 2001 – August 31, 2001
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
July 1, 2001 – July 31, 2001
Archived
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
July 1, 2001 – July 31, 2001
Archived
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
May 1, 2001 – May 31, 2001
Archived
Monitoring, Regular
—
Nitrate
April 1, 2001 – June 30, 2001
Archived
Monitoring, Regular
—
Nitrate
April 1, 2001 – June 30, 2001
Archived
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
March 1, 2001 – March 31, 2001
Archived
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
December 1, 2000 – December 31, 2000
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
September 1, 2000 – September 30, 2000
Archived
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
August 1, 2000 – August 31, 2000
Archived
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
July 1, 2000 – July 31, 2000
Archived
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
March 1, 2000 – March 31, 2000
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
February 1, 2000 – February 29, 2000
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
January 1, 2000 – January 31, 2000
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
September 1, 1999 – September 30, 1999
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
August 1, 1999 – August 31, 1999
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
July 1, 1999 – July 31, 1999
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
June 1, 1999 – June 30, 1999
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
May 1, 1999 – May 31, 1999
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
February 1, 1999 – February 28, 1999
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
December 1, 1998 – December 31, 1998
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
November 1, 1998 – November 30, 1998
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
September 1, 1998 – September 30, 1998
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
September 1, 1998 – September 30, 1998
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
August 1, 1998 – August 31, 1998
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
June 1, 1998 – June 30, 1998
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
May 1, 1998 – May 31, 1998
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
March 1, 1998 – March 31, 1998
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
January 1, 1998 – January 31, 1998
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
November 1, 1997 – November 30, 1997
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
October 1, 1997 – October 31, 1997
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
May 1, 1997 – May 31, 1997
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
April 1, 1997 – April 30, 1997
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
November 1, 1996 – November 30, 1996
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
October 1, 1996 – October 31, 1996
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
October 1, 1995 – October 31, 1995
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
June 1, 1995 – June 30, 1995
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
May 1, 1995 – May 31, 1995
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
April 1, 1995 – April 30, 1995
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
March 1, 1995 – March 31, 1995
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
February 1, 1995 – February 28, 1995
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
January 1, 1995 – January 31, 1995
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
December 1, 1994 – December 31, 1994
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
October 1, 1994 – October 31, 1994
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
September 1, 1994 – October 1, 1994
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
July 1, 1994 – July 31, 1994
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
March 1, 1994 – March 31, 1994
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
December 1, 1993 – December 31, 1993
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
November 1, 1993 – November 30, 1993
Archived
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
July 1, 1992 – July 1, 1993
Resolved

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Period	Violation	Contaminant / rule	Health-based	Status
July 1, 2020 – July 29, 2020	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
February 1, 2019 – February 28, 2019	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
October 1, 2018 – August 13, 2019	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
June 1, 2018 – June 30, 2018	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
April 1, 2018 – June 30, 2018	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
March 1, 2018 – March 31, 2018	Maximum Contaminant Level Violation, E. coli (RTCR)	Revised Total Coliform Rule	Health-based	Resolved
January 1, 2018 – March 31, 2018	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
January 1, 2018 – March 31, 2018	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
August 1, 2017 – August 31, 2017	Monitoring, Source Water (LT2)	E. COLI	—	Resolved
August 1, 2017 – August 31, 2017	Monitoring, Source Water (LT2)	Turbidity	—	Resolved
August 1, 2017 – August 31, 2017	Monitoring, Source Water (LT2)	Cryptosporidium	—	Resolved
July 1, 2017 – July 31, 2017	Monitoring, Source Water (LT2)	Cryptosporidium	—	Resolved
July 1, 2017 – July 31, 2017	Monitoring, Source Water (LT2)	E. COLI	—	Resolved
July 1, 2017 – July 31, 2017	Monitoring, Source Water (LT2)	Turbidity	—	Resolved
June 1, 2017 – June 30, 2017	Monitoring, Source Water (LT2)	E. COLI	—	Resolved
June 1, 2017 – June 30, 2017	Monitoring, Source Water (LT2)	Turbidity	—	Resolved
June 1, 2017 – June 30, 2017	Monitoring, Source Water (LT2)	Cryptosporidium	—	Resolved
May 1, 2017 – May 31, 2017	Monitoring, Source Water (LT2)	Cryptosporidium	—	Resolved
May 1, 2017 – May 31, 2017	Monitoring, Source Water (LT2)	Turbidity	—	Resolved
May 1, 2017 – May 31, 2017	Monitoring, Source Water (LT2)	E. COLI	—	Resolved
February 1, 2017 – February 28, 2017	Monitoring, Source Water (LT2)	Cryptosporidium	—	Resolved
February 1, 2017 – February 28, 2017	Monitoring, Source Water (LT2)	E. COLI	—	Resolved
February 1, 2017 – February 28, 2017	Monitoring, Source Water (LT2)	Turbidity	—	Resolved
January 1, 2017 – January 31, 2017	Monitoring, Source Water (LT2)	Cryptosporidium	—	Resolved
January 1, 2017 – January 31, 2017	Monitoring, Source Water (LT2)	E. COLI	—	Resolved
January 1, 2017 – January 31, 2017	Monitoring, Source Water (LT2)	Turbidity	—	Resolved
August 1, 2016 – August 31, 2016	Monitoring, Source Water (LT2)	Cryptosporidium	—	Resolved
August 1, 2016 – August 31, 2016	Monitoring, Source Water (LT2)	E. COLI	—	Resolved
August 1, 2016 – August 31, 2016	Monitoring, Source Water (LT2)	Turbidity	—	Resolved
July 1, 2016 – September 30, 2016	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
January 1, 2016 – March 31, 2016	Monitoring, Routine (IDSE)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2016 – December 31, 2018	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
January 1, 2016 – March 31, 2016	Monitoring, Routine (IDSE)	TTHM	—	Resolved
January 1, 2016 – March 31, 2016	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
October 1, 2015 – December 31, 2015	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
October 1, 2015 – December 31, 2015	Monitoring, Routine (IDSE)	Total Haloacetic Acids (HAA5)	—	Resolved
October 1, 2015 – December 31, 2015	Monitoring, Routine (IDSE)	TTHM	—	Resolved
October 1, 2014 – December 31, 2014	Monitoring, Routine (IDSE)	TTHM	—	Resolved
October 1, 2014 – December 31, 2014	Monitoring, Routine (IDSE)	Total Haloacetic Acids (HAA5)	—	Resolved
July 1, 2014 – August 11, 2014	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
April 1, 2014 – June 30, 2014	Monitoring, Routine (IDSE)	TTHM	—	Resolved
April 1, 2014 – June 30, 2014	Monitoring, Routine (IDSE)	Total Haloacetic Acids (HAA5)	—	Resolved
October 1, 2013 – December 31, 2013	Monitoring, Routine (IDSE)	TTHM	—	Resolved
October 1, 2013 – December 31, 2013	Monitoring, Routine (IDSE)	Total Haloacetic Acids (HAA5)	—	Resolved
October 1, 2013 – October 31, 2013	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
July 1, 2012 – December 31, 2018	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
April 1, 2010 – March 30, 2009	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
October 1, 2009 – October 31, 2009	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
September 1, 2008 – September 30, 2008	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
July 1, 2008 – July 31, 2008	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Simazine	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Atrazine	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	LASSO	—	Resolved
December 1, 2007 – December 31, 2007	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
July 1, 2007 – September 30, 2007	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2007 – September 30, 2007	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
June 1, 2007 – June 30, 2007	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
May 1, 2007 – May 31, 2007	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
April 1, 2007 – June 30, 2007	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
April 1, 2007 – June 30, 2007	Monitoring, Regular	CHLOROBENZENE	—	Resolved
April 1, 2007 – June 30, 2007	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
April 1, 2007 – April 30, 2007	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
March 1, 2007 – March 31, 2007	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
January 1, 2007 – March 31, 2007	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
January 1, 2007 – March 31, 2007	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
January 1, 2007 – March 31, 2007	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
January 1, 2007 – March 31, 2007	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
October 1, 2006 – December 31, 2006	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
October 1, 2006 – December 31, 2006	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
October 1, 2006 – October 31, 2006	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
October 1, 2006 – December 31, 2006	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
July 1, 2006 – September 30, 2006	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
July 1, 2006 – September 30, 2006	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Archived
July 1, 2006 – September 30, 2006	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
July 1, 2006 – September 30, 2006	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
July 1, 2006 – July 31, 2006	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
June 1, 2006 – June 30, 2006	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
May 1, 2006 – May 31, 2006	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
April 1, 2006 – April 30, 2006	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
April 1, 2006 – June 30, 2006	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
April 1, 2006 – June 30, 2006	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
April 1, 2006 – June 30, 2006	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
March 1, 2006 – March 31, 2006	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
February 1, 2006 – February 28, 2006	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
January 1, 2006 – March 31, 2006	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
January 1, 2006 – January 31, 2006	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
December 1, 2005 – December 31, 2005	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
November 1, 2005 – November 30, 2005	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
November 1, 2005 – November 30, 2005	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
October 1, 2005 – December 31, 2005	Monitoring, Regular	Ethylbenzene	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	Xylenes, Total	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	Vinyl chloride	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	Carbon tetrachloride	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	Trichloroethylene	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	Tetrachloroethylene	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	CHLOROBENZENE	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	Benzene	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	Toluene	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	Styrene	—	Resolved
October 1, 2005 – October 31, 2005	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
October 1, 2005 – October 31, 2005	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
October 1, 2005 – December 31, 2005	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
October 1, 2005 – December 31, 2005	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
October 1, 2005 – December 31, 2005	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
September 1, 2005 – September 30, 2005	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
August 1, 2005 – August 31, 2005	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Archived
August 1, 2005 – August 31, 2005	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
July 1, 2005 – September 30, 2005	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
July 1, 2005 – September 30, 2005	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
July 1, 2005 – September 30, 2005	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
June 1, 2005 – June 30, 2005	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
May 1, 2005 – May 31, 2005	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
April 1, 2005 – June 30, 2005	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
April 1, 2005 – June 30, 2005	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
April 1, 2005 – June 30, 2005	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
April 1, 2005 – April 30, 2005	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
March 1, 2005 – March 31, 2005	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
February 1, 2005 – February 28, 2005	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
January 1, 2005 – January 31, 2005	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
January 1, 2005 – March 31, 2005	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
January 1, 2005 – March 31, 2005	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
January 1, 2005 – March 31, 2005	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
December 1, 2004 – December 31, 2004	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
November 1, 2004 – November 30, 2004	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
October 1, 2004 – December 31, 2004	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
October 1, 2004 – December 31, 2004	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
October 1, 2004 – October 31, 2004	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
October 1, 2004 – October 31, 2004	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Archived
August 1, 2004 – August 31, 2004	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
July 1, 2004 – July 31, 2004	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
July 1, 2004 – September 30, 2004	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
May 1, 2004 – May 31, 2004	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
April 1, 2004 – April 30, 2004	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
April 1, 2004 – March 31, 2005	Monitoring and Reporting (DBP)	TTHM	—	Archived
January 1, 2004 – March 31, 2004	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
January 1, 2004 – March 31, 2004	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
October 1, 2003 – December 31, 2003	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
October 1, 2003 – December 31, 2003	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
July 1, 2003 – September 30, 2003	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
June 1, 2003 – June 30, 2003	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
April 1, 2003 – June 30, 2003	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
April 1, 2003 – April 30, 2003	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
April 1, 2003 – June 30, 2003	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
March 1, 2003 – March 31, 2003	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
February 1, 2003 – February 28, 2003	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
December 1, 2002 – December 31, 2002	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
November 1, 2002 – November 30, 2002	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
October 1, 2002 – October 31, 2002	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
June 1, 2002 – June 30, 2002	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
April 1, 2002 – April 30, 2002	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
February 1, 2002 – February 28, 2002	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
September 1, 2001 – September 30, 2001	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Archived
September 1, 2001 – September 30, 2001	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
August 1, 2001 – August 31, 2001	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
August 1, 2001 – August 31, 2001	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Archived
July 1, 2001 – July 31, 2001	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
July 1, 2001 – July 31, 2001	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Archived
May 1, 2001 – May 31, 2001	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Archived
April 1, 2001 – June 30, 2001	Monitoring, Regular	Nitrate	—	Archived
April 1, 2001 – June 30, 2001	Monitoring, Regular	Nitrate	—	Archived
March 1, 2001 – March 31, 2001	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Archived
December 1, 2000 – December 31, 2000	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Archived
September 1, 2000 – September 30, 2000	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
August 1, 2000 – August 31, 2000	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Archived
July 1, 2000 – July 31, 2000	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Archived
March 1, 2000 – March 31, 2000	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Archived
February 1, 2000 – February 29, 2000	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
January 1, 2000 – January 31, 2000	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
September 1, 1999 – September 30, 1999	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
August 1, 1999 – August 31, 1999	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
July 1, 1999 – July 31, 1999	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
June 1, 1999 – June 30, 1999	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
May 1, 1999 – May 31, 1999	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
February 1, 1999 – February 28, 1999	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
December 1, 1998 – December 31, 1998	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
November 1, 1998 – November 30, 1998	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
September 1, 1998 – September 30, 1998	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
September 1, 1998 – September 30, 1998	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
August 1, 1998 – August 31, 1998	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
June 1, 1998 – June 30, 1998	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
May 1, 1998 – May 31, 1998	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
March 1, 1998 – March 31, 1998	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
January 1, 1998 – January 31, 1998	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
November 1, 1997 – November 30, 1997	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
October 1, 1997 – October 31, 1997	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
May 1, 1997 – May 31, 1997	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
April 1, 1997 – April 30, 1997	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
November 1, 1996 – November 30, 1996	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
October 1, 1996 – October 31, 1996	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
October 1, 1995 – October 31, 1995	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
June 1, 1995 – June 30, 1995	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
May 1, 1995 – May 31, 1995	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
April 1, 1995 – April 30, 1995	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
March 1, 1995 – March 31, 1995	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
February 1, 1995 – February 28, 1995	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
January 1, 1995 – January 31, 1995	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
December 1, 1994 – December 31, 1994	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
October 1, 1994 – October 31, 1994	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
September 1, 1994 – October 1, 1994	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
July 1, 1994 – July 31, 1994	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
March 1, 1994 – March 31, 1994	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
December 1, 1993 – December 31, 1993	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
November 1, 1993 – November 30, 1993	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
July 1, 1992 – July 1, 1993	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

July 30, 2020State Compliance achievedgeneral compliance action — not tied to a specific violation on record
July 29, 2020State Compliance achieved1 linked violation
August 31, 2019State Compliance achieved1 linked violation
August 13, 2019State Compliance achieved2 linked violations
August 1, 2019State Compliance achieved1 linked violation
July 10, 2019State Formal Notice of Violation issued1 linked violation
March 20, 2019State Formal Notice of Violation issued1 linked violation
December 31, 2018State Compliance achieved1 linked violation
December 31, 2018State Compliance achieved2 linked violations
December 31, 2018State Compliance achieved1 linked violation
September 30, 2018State Compliance achieved1 linked violation
September 13, 2018State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
May 8, 2018State Civil Case filed in State court3 linked violations
April 30, 2018State Compliance achieved1 linked violation
April 13, 2018State Formal Notice of Violation issued1 linked violation
January 31, 2018State Compliance achieved21 linked violations
November 29, 2017State Formal Notice of Violation issued3 linked violations
October 31, 2017State Formal Notice of Violation issued3 linked violations
August 16, 2017State Formal Notice of Violation issued3 linked violations
July 6, 2017State Formal Notice of Violation issued3 linked violations
May 15, 2017State Formal Notice of Violation issued6 linked violations
December 31, 2016State Compliance achieved1 linked violation
December 5, 2016State Formal Notice of Violation issued3 linked violations
July 12, 2016State Formal Notice of Violation issued2 linked violations
June 30, 2016State Compliance achieved2 linked violations
March 31, 2016State Compliance achieved2 linked violations
March 31, 2016State Compliance achieved2 linked violations
February 19, 2016State Formal Notice of Violation issued1 linked violation
February 18, 2016State Formal Notice of Violation issued2 linked violations
February 9, 2016State Civil Case filed in State court3 linked violations
March 31, 2015State Compliance achieved4 linked violations
February 9, 2015State Formal Notice of Violation issued2 linked violations
August 11, 2014State Formal Notice of Violation issued2 linked violations
August 11, 2014State Compliance achieved1 linked violation
July 15, 2014State Formal Notice of Violation issued2 linked violations
April 30, 2014State Compliance achieved1 linked violation
March 31, 2014State Compliance achieved1 linked violation
March 30, 2014State Compliance achieved1 linked violation
May 1, 2013State Formal Notice of Violation issued1 linked violation
April 30, 2010State Compliance achieved1 linked violation
March 30, 2009State Compliance achieved3 linked violations
March 30, 2009State Compliance achieved3 linked violations
December 8, 2008State Civil Case filed in State court1 linked violation
September 30, 2008State Compliance achieved7 linked violations
September 30, 2008State Compliance achieved1 linked violation
September 30, 2008State Compliance achieved6 linked violations
September 4, 2008State Civil Case filed in State court1 linked violation
November 15, 2007State Civil Case filed in State court15 linked violations
September 30, 2007State Compliance achieved4 linked violations
June 30, 2007State Compliance achieved2 linked violations
March 30, 2007State Compliance achieved3 linked violations
March 15, 2007State Consent Decree/Judgement26 linked violations
February 5, 2007State Administrative/Compliance Order without penalty issued15 linked violations
February 5, 2007State Administrative/Compliance Order without penalty issued15 linked violations
February 5, 2007State Administrative/Compliance Order without penalty issued15 linked violations
August 22, 2006State Formal Notice of Violation issued21 linked violations
August 15, 2006State Public Notification requested3 linked violations
June 30, 2006State Compliance achievedgeneral compliance action — not tied to a specific violation on record
March 31, 2006State Compliance achieved21 linked violations
November 14, 2005State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
November 10, 2005State Administrative/Compliance Order without penalty issued2 linked violations
July 20, 2005State Formal Notice of Violation issued1 linked violation
October 4, 2004State Public Notification requested2 linked violations
August 12, 2004State Public Notification requested3 linked violations
February 9, 2004State Public Notification requested1 linked violation
August 14, 2003State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
May 12, 2003State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
August 12, 2002State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
May 13, 2002State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
February 11, 2002State Public Notification requested2 linked violations
December 18, 2001State Public Notification received1 linked violation
November 13, 2001State Public Notification received2 linked violations
October 4, 2001State Public Notification received2 linked violations
September 14, 2001State Public Notification received2 linked violations
July 19, 2001State Public Notification received1 linked violation
June 20, 2001State Public Notification received1 linked violation
May 7, 2001State Public Notification requested4 linked violations
February 13, 2001State Public Notification requested3 linked violations
May 9, 2000State Public Notification requested3 linked violations
February 8, 2000State Public Notification requested3 linked violations
November 12, 1999State Public Notification requested3 linked violations
August 10, 1999State Public Notification requested2 linked violations
May 13, 1999State Public Notification requested4 linked violations
February 9, 1999State Public Notification requested3 linked violations
November 10, 1998State Public Notification requested4 linked violations
August 1, 1998State Public Notification received1 linked violation
May 13, 1998State Public Notification requested2 linked violations
February 11, 1998State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
October 21, 1997State Public Notification received1 linked violation
July 15, 1997State Public Notification received1 linked violation
June 4, 1997State Public Notification received1 linked violation
March 3, 1997State Public Notification received1 linked violation
January 15, 1997State Public Notification received2 linked violations
November 6, 1996State Public Notification requested2 linked violations
November 29, 1995State Public Notification received1 linked violation
October 25, 1995State Public Notification received1 linked violation
July 24, 1995State Public Notification received1 linked violation
July 12, 1995State Public Notification received1 linked violation
May 24, 1995State Public Notification received1 linked violation
April 28, 1995State Public Notification received1 linked violation
March 28, 1995State Public Notification received1 linked violation
March 14, 1995State Public Notification received1 linked violation
February 7, 1995State Public Notification requested2 linked violations
November 30, 1994State Formal Notice of Violation issued1 linked violation
November 5, 1994State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
October 28, 1994State Public Notification received1 linked violation
August 19, 1994State Public Notification received1 linked violation
June 29, 1994State Public Notification received1 linked violation
March 4, 1994State Administrative/Compliance Order without penalty issued1 linked violation
January 29, 1994State Public Notification received1 linked violation
January 28, 1994State Public Notification received2 linked violations
December 9, 1993State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
November 5, 1993State Public Notification received1 linked violation
August 19, 1993State Public Notification receivedgeneral compliance action — not tied to a specific violation on record

Common questions

Is ISABELA required to publish a Consumer Confidence Report?: Yes. ISABELA is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is ISABELA’s next Consumer Confidence Report due?: ISABELA’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does ISABELA have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for ISABELA.
What is a Consumer Confidence Report?: A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

Contact

X, ISABELA

Phone not on record

SANTURCE, PR 00916