Is LAS MARIAS required to publish a Consumer Confidence Report?

Yes. LAS MARIAS 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 LAS MARIAS’s next Consumer Confidence Report due?

LAS MARIAS’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.

LAS MARIAS, PR · Las Marias Municipio County

LAS MARIAS Water System

Consumer Confidence Report status

LAS MARIAS 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 LAS MARIAS.

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): PR0003363
System type: Community Water System
Population served: 7,193
Service connections: 2,694
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

LAS MARIAS is one of 71 community water systems in Puerto Rico in the 3,301 to 10,000 people size category, serving 7,193 people from surface water.

As of August 1, 2026, its federal record holds 96 entries between 1983 and 2023, all of which EPA lists as closed. Nothing has been added since 2023.

Of the 96, 71 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, volatile organic chemicals, and the Stage 2 Disinfectants and Disinfection Byproducts Rule.

Violation history

Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
May 1, 2023 – May 31, 2023
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2020 – August 5, 2020
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
October 1, 2018 – August 13, 2019
Resolved
Monitoring, Routine (IDSE)
—
TTHM
April 1, 2018 – September 30, 2016
Resolved
Monitoring, Routine (IDSE)
—
Total Haloacetic Acids (HAA5)
April 1, 2018 – September 30, 2016
Resolved
Monitoring, Source Water (LT2)
—
Turbidity
April 1, 2018 – April 30, 2018
Resolved
Monitoring, Source Water (LT2)
—
Cryptosporidium
April 1, 2018 – April 30, 2018
Resolved
Monitoring, Source Water (LT2)
—
E. COLI
April 1, 2018 – April 30, 2018
Resolved
Monitoring, Source Water (LT2)
—
E. COLI
January 1, 2018 – January 31, 2018
Resolved
Monitoring, Routine (IDSE)
—
Total Haloacetic Acids (HAA5)
January 1, 2018 – March 31, 2018
Resolved
Monitoring, Routine (IDSE)
—
TTHM
January 1, 2018 – March 31, 2018
Resolved
Monitoring, Source Water (LT2)
—
Turbidity
January 1, 2018 – January 31, 2018
Resolved
Monitoring, Source Water (LT2)
—
Cryptosporidium
January 1, 2018 – January 31, 2018
Resolved
Monitoring, Source Water (LT2)
—
Cryptosporidium
August 1, 2017 – August 31, 2017
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)
—
Turbidity
July 1, 2017 – July 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)
—
E. COLI
May 1, 2017 – May 31, 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)
—
Turbidity
February 1, 2017 – February 28, 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
January 1, 2017 – January 31, 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)
—
E. COLI
October 1, 2016 – October 31, 2016
Resolved
Monitoring, Source Water (LT2)
—
Cryptosporidium
October 1, 2016 – October 31, 2016
Resolved
Monitoring, Source Water (LT2)
—
Turbidity
October 1, 2016 – October 31, 2016
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2016 – September 30, 2016
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2016 – June 30, 2016
Resolved
Monitoring, Routine (IDSE)
—
Total Haloacetic Acids (HAA5)
January 1, 2016 – March 31, 2016
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
Lead Consumer Notice
—
Lead and Copper Rule
January 1, 2015 – December 31, 2018
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2014 – December 31, 2014
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2014 – August 8, 2014
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2014 – September 30, 2014
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
December 1, 2013 – December 31, 2013
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
May 1, 2013 – May 31, 2013
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
April 1, 2013 – April 30, 2013
Resolved
Monitoring, Regular
—
Simazine
January 1, 2012 – March 31, 2012
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
January 1, 2012 – March 31, 2012
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 2012 – March 31, 2012
Resolved
Monitoring, Regular
—
Atrazine
January 1, 2012 – March 31, 2012
Resolved
Monitoring, Regular
—
LASSO
January 1, 2012 – March 31, 2012
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
January 1, 2012 – March 31, 2012
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
July 1, 2011 – December 31, 2018
Resolved
Monitoring, Source Water (LT2)
—
Cryptosporidium
December 1, 2009 – December 31, 2009
Resolved
Monitoring, Source Water (LT2)
—
Cryptosporidium
November 1, 2009 – November 30, 2009
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
January 1, 2009 – December 31, 2018
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
April 1, 2007 – April 30, 2007
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
May 1, 2006 – May 31, 2006
Resolved
Monitoring, Regular
—
Nitrate
April 1, 2006 – June 30, 2006
Resolved
Monitoring and Reporting (DBP)
—
TTHM
July 1, 2005 – September 30, 2005
Archived
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Benzene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Styrene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Toluene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2005 – December 31, 2005
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
July 1, 2004 – July 31, 2004
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
June 1, 2002 – June 30, 2002
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
November 1, 2001 – November 30, 2001
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
February 1, 2001 – February 28, 2001
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
August 1, 2000 – August 31, 2000
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
December 1, 1999 – December 31, 1999
Archived
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
September 1, 1998 – September 30, 1998
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
May 1, 1994 – May 31, 1994
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
April 1, 1994 – April 30, 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
January 1, 1994 – January 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
Monitoring, Regular
—
Arsenic
September 30, 1983 – September 29, 1984
Archived
Monitoring, Regular
—
Cadmium
September 30, 1983 – September 29, 1984
Archived
Monitoring, Regular
—
Chromium
September 30, 1983 – September 29, 1984
Archived
Monitoring, Regular
—
Fluoride
September 30, 1983 – September 29, 1984
Archived
Monitoring, Regular
—
Mercury
September 30, 1983 – September 29, 1984
Archived

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
May 1, 2023 – May 31, 2023	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
July 1, 2020 – August 5, 2020	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
October 1, 2018 – August 13, 2019	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
April 1, 2018 – September 30, 2016	Monitoring, Routine (IDSE)	TTHM	—	Resolved
April 1, 2018 – September 30, 2016	Monitoring, Routine (IDSE)	Total Haloacetic Acids (HAA5)	—	Resolved
April 1, 2018 – April 30, 2018	Monitoring, Source Water (LT2)	Turbidity	—	Resolved
April 1, 2018 – April 30, 2018	Monitoring, Source Water (LT2)	Cryptosporidium	—	Resolved
April 1, 2018 – April 30, 2018	Monitoring, Source Water (LT2)	E. COLI	—	Resolved
January 1, 2018 – January 31, 2018	Monitoring, Source Water (LT2)	E. COLI	—	Resolved
January 1, 2018 – March 31, 2018	Monitoring, Routine (IDSE)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2018 – March 31, 2018	Monitoring, Routine (IDSE)	TTHM	—	Resolved
January 1, 2018 – January 31, 2018	Monitoring, Source Water (LT2)	Turbidity	—	Resolved
January 1, 2018 – January 31, 2018	Monitoring, Source Water (LT2)	Cryptosporidium	—	Resolved
August 1, 2017 – August 31, 2017	Monitoring, Source Water (LT2)	Cryptosporidium	—	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
July 1, 2017 – July 31, 2017	Monitoring, Source Water (LT2)	Turbidity	—	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
May 1, 2017 – May 31, 2017	Monitoring, Source Water (LT2)	E. COLI	—	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
February 1, 2017 – February 28, 2017	Monitoring, Source Water (LT2)	Turbidity	—	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
January 1, 2017 – January 31, 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
October 1, 2016 – October 31, 2016	Monitoring, Source Water (LT2)	E. COLI	—	Resolved
October 1, 2016 – October 31, 2016	Monitoring, Source Water (LT2)	Cryptosporidium	—	Resolved
October 1, 2016 – October 31, 2016	Monitoring, Source Water (LT2)	Turbidity	—	Resolved
July 1, 2016 – September 30, 2016	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
April 1, 2016 – June 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 – March 31, 2016	Monitoring, Routine (IDSE)	TTHM	—	Resolved
January 1, 2016 – March 31, 2016	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
January 1, 2015 – December 31, 2018	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
October 1, 2014 – December 31, 2014	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2014 – August 8, 2014	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2014 – September 30, 2014	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
December 1, 2013 – December 31, 2013	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
May 1, 2013 – May 31, 2013	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
April 1, 2013 – April 30, 2013	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
January 1, 2012 – March 31, 2012	Monitoring, Regular	Simazine	—	Resolved
January 1, 2012 – March 31, 2012	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
January 1, 2012 – March 31, 2012	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
January 1, 2012 – March 31, 2012	Monitoring, Regular	Atrazine	—	Resolved
January 1, 2012 – March 31, 2012	Monitoring, Regular	LASSO	—	Resolved
January 1, 2012 – March 31, 2012	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
July 1, 2011 – December 31, 2018	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
December 1, 2009 – December 31, 2009	Monitoring, Source Water (LT2)	Cryptosporidium	—	Resolved
November 1, 2009 – November 30, 2009	Monitoring, Source Water (LT2)	Cryptosporidium	—	Resolved
January 1, 2009 – December 31, 2018	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
April 1, 2007 – April 30, 2007	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
May 1, 2006 – May 31, 2006	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
April 1, 2006 – June 30, 2006	Monitoring, Regular	Nitrate	—	Resolved
July 1, 2005 – September 30, 2005	Monitoring and Reporting (DBP)	TTHM	—	Archived
January 1, 2005 – December 31, 2005	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Benzene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Styrene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Toluene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Trichloroethylene	—	Resolved
July 1, 2004 – July 31, 2004	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
June 1, 2002 – June 30, 2002	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
November 1, 2001 – November 30, 2001	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
February 1, 2001 – February 28, 2001	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
August 1, 2000 – August 31, 2000	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
December 1, 1999 – December 31, 1999	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
September 1, 1998 – September 30, 1998	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Archived
May 1, 1994 – May 31, 1994	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
April 1, 1994 – April 30, 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
January 1, 1994 – January 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
September 30, 1983 – September 29, 1984	Monitoring, Regular	Arsenic	—	Archived
September 30, 1983 – September 29, 1984	Monitoring, Regular	Cadmium	—	Archived
September 30, 1983 – September 29, 1984	Monitoring, Regular	Chromium	—	Archived
September 30, 1983 – September 29, 1984	Monitoring, Regular	Fluoride	—	Archived
September 30, 1983 – September 29, 1984	Monitoring, Regular	Mercury	—	Archived

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

Enforcement actions

June 30, 2023State Compliance achieved1 linked violation
June 30, 2023State Formal Notice of Violation issued1 linked violation
August 5, 2020State Compliance achieved1 linked violation
August 13, 2019State Compliance achieved1 linked violation
July 10, 2019State Formal Notice of Violation issued1 linked violation
March 6, 2019State Compliance achieved3 linked violations
December 31, 2018State Compliance achieved3 linked violations
November 30, 2018State Compliance achieved6 linked violations
August 20, 2018State Formal Notice of Violation issued2 linked violations
August 13, 2018State Formal Notice of Violation issued6 linked violations
June 30, 2018State Compliance achieved2 linked violations
June 13, 2018State Formal Notice of Violation issued2 linked violations
February 28, 2018State Compliance achieved3 linked violations
February 28, 2018State Compliance achieved15 linked violations
November 29, 2017State Formal Notice of Violation issued3 linked violations
October 31, 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 13, 2016State Formal Notice of Violation issued3 linked violations
November 30, 2016State Compliance achieved3 linked violations
September 30, 2016State Compliance achieved4 linked violations
July 12, 2016State Formal Notice of Violation issued2 linked violations
March 31, 2015State Compliance achieved1 linked violation
March 31, 2015State Formal Notice of Violation issued1 linked violation
March 31, 2015State Compliance achieved2 linked violations
October 27, 2014State Civil Case filed in State court4 linked violations
August 8, 2014State Compliance achieved1 linked violation
July 1, 2014State Compliance achieved1 linked violation
December 1, 2013State Compliance achieved1 linked violation
November 1, 2013State Compliance achieved1 linked violation
June 30, 2013State Compliance achieved1 linked violation
May 31, 2013State Compliance achieved1 linked violation
July 1, 2012State Compliance achieved6 linked violations
June 30, 2012State Compliance achieved6 linked violations
May 11, 2012State Formal Notice of Violation issued6 linked violations
December 11, 2011State Formal Notice of Violation issued1 linked violation
December 11, 2011State Formal Notice of Violation issued1 linked violation
December 11, 2011State Formal Notice of Violation issued1 linked violation
January 31, 2010State Compliance achieved2 linked violations
August 25, 2009State Formal Notice of Violation issued1 linked violation
June 24, 2008State Civil Case filed in State court1 linked violation
October 31, 2007State Compliance achieved1 linked violation
June 30, 2007State Compliance achieved1 linked violation
November 30, 2006State Compliance achieved1 linked violation
August 22, 2006State Formal Notice of Violation issued21 linked violations
August 14, 2006State Public Notification requested1 linked violation
March 31, 2006State Compliance achieved21 linked violations
November 15, 2005State Formal Notice of Violation issued1 linked violation
October 4, 2004State Public Notification requested1 linked violation
August 12, 2002State Public Notification requested1 linked violation
February 11, 2002State Public Notification requested1 linked violation
January 1, 2002State Compliance achieved1 linked violation
June 20, 2001State Public Notification received1 linked violation
November 13, 2000State Public Notification requested3 linked violations
February 8, 2000State Public Notification requested1 linked violation
February 9, 1999State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
November 10, 1998State Public Notification requested1 linked violation
March 4, 1998State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
February 11, 1998State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
June 29, 1994State Public Notification received1 linked violation
May 30, 1994State Public Notification received1 linked violation
March 4, 1994State Administrative/Compliance Order without penalty issued1 linked violation
January 28, 1994State Public Notification received1 linked violation
December 9, 1993State Public Notification received1 linked violation
November 5, 1993State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
November 2, 1993State Violation/Reminder Notice1 linked violation
September 22, 1993State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
August 19, 1993State Public Notification receivedgeneral compliance action — not tied to a specific violation on record

Common questions

Is LAS MARIAS required to publish a Consumer Confidence Report?: Yes. LAS MARIAS 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 LAS MARIAS’s next Consumer Confidence Report due?: LAS MARIAS’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does LAS MARIAS have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for LAS MARIAS.
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

LAS MARIAS

787-620-2277

LAS MARIAS, PR 00670