ARECIBO, PR · Arecibo Municipio County

RIO ARRIBA Water System

Current status

No open violations on record as of July 4, 2026.

This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 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): PR0002842
System type: Community Water System
Population served: 753
Service connections: 282
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Monitoring, Regular
—
Nitrate
January 1, 2024 – March 31, 2024
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
February 1, 2023 – February 28, 2023
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2022 – July 4, 2022
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2020 – August 10, 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
Archived
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
May 1, 2018 – May 31, 2018
Archived
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
April 1, 2018 – April 30, 2018
Archived
Monitoring, Source Water (LT2)
—
E. COLI
February 1, 2018 – February 28, 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
Lead Consumer Notice
—
Lead and Copper Rule
January 1, 2015 – December 31, 2018
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2014 – August 20, 2014
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
July 1, 2011 – December 31, 2018
Resolved
Monitoring, Regular
—
BHC-GAMMA
January 1, 2010 – March 31, 2010
Resolved
Monitoring, Regular
—
Chlordane
January 1, 2010 – March 31, 2010
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
January 1, 2010 – March 31, 2010
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
January 1, 2010 – March 31, 2010
Resolved
Monitoring, Regular
—
Heptachlor epoxide
January 1, 2010 – March 31, 2010
Resolved
Monitoring, Regular
—
Heptachlor
January 1, 2010 – March 31, 2010
Resolved
Monitoring, Regular
—
Toxaphene
January 1, 2010 – March 31, 2010
Resolved
Monitoring, Regular
—
Methoxychlor
January 1, 2010 – March 31, 2010
Resolved
Monitoring, Regular
—
Endrin
January 1, 2010 – March 31, 2010
Resolved
Monitoring, Regular
—
Trichloroethylene
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
Styrene
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
Ethylbenzene
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
Toluene
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
Benzene
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
CHLOROBENZENE
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
Tetrachloroethylene
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
Vinyl chloride
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
Xylenes, Total
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
Carbon tetrachloride
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
October 1, 2009 – December 31, 2009
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
January 1, 2009 – June 1, 2011
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
January 1, 2009 – December 31, 2018
Resolved
Monitoring and Reporting (DBP)
—
TTHM
April 1, 2008 – June 30, 2008
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
January 1, 2007 – January 31, 2007
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
February 1, 2006 – February 28, 2006
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
January 1, 2006 – January 31, 2006
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
October 1, 2005 – October 31, 2005
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
February 1, 2005 – February 28, 2005
Archived
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2005 – December 31, 2005
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
January 1, 2005 – January 31, 2005
Archived
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Benzene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Toluene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Styrene
January 1, 2005 – December 31, 2005
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
October 1, 2004 – October 31, 2004
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 2004 – August 31, 2004
Archived
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
August 1, 2004 – August 31, 2004
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
August 1, 2004 – August 31, 2004
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
July 1, 2004 – July 31, 2004
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
June 1, 2004 – June 30, 2004
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
May 1, 2004 – May 31, 2004
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
April 1, 2004 – April 30, 2004
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
March 1, 2004 – March 31, 2004
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
February 1, 2004 – February 29, 2004
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
November 1, 2003 – November 30, 2003
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
October 1, 2003 – October 31, 2003
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
August 1, 2003 – August 31, 2003
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
March 1, 2003 – March 31, 2003
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
February 1, 2003 – February 28, 2003
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
December 1, 2002 – December 31, 2002
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
November 1, 2002 – November 30, 2002
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
April 1, 2002 – April 30, 2002
Archived
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
September 1, 2001 – September 30, 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
June 1, 2001 – June 30, 2001
Archived
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
May 1, 2001 – May 31, 2001
Archived
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
February 1, 2001 – February 28, 2001
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
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
November 1, 1998 – November 30, 1998
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
October 1, 1998 – October 31, 1998
Archived
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
July 1, 1998 – January 1, 1999
Resolved
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
September 1, 1996 – September 30, 1996
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
October 1, 1994 – October 31, 1994
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
June 1, 1994 – June 30, 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
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
December 1, 1993 – December 31, 1993
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
December 1, 1993 – December 31, 1993
Archived
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
November 1, 1993 – November 30, 1993
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
November 1, 1993 – November 30, 1993
Archived
Monitoring, Regular
—
Cadmium
September 30, 1983 – September 29, 1984
Archived
Monitoring, Regular
—
Selenium
September 30, 1983 – September 29, 1984
Archived
Monitoring, Regular
—
Nitrate
September 30, 1983 – September 29, 1984
Archived
Monitoring, Regular
—
Mercury
September 30, 1983 – September 29, 1984
Archived
Monitoring, Regular
—
Fluoride
September 30, 1983 – September 29, 1984
Archived
Monitoring, Regular
—
Chromium
September 30, 1983 – September 29, 1984
Archived
Monitoring, Regular
—
Barium
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
January 1, 2024 – March 31, 2024	Monitoring, Regular	Nitrate	—	Resolved
February 1, 2023 – February 28, 2023	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
July 1, 2022 – July 4, 2022	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2020 – August 10, 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	—	Archived
May 1, 2018 – May 31, 2018	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Archived
April 1, 2018 – April 30, 2018	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Archived
February 1, 2018 – February 28, 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, 2015 – December 31, 2018	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
July 1, 2014 – August 20, 2014	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2011 – December 31, 2018	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
January 1, 2010 – March 31, 2010	Monitoring, Regular	BHC-GAMMA	—	Resolved
January 1, 2010 – March 31, 2010	Monitoring, Regular	Chlordane	—	Resolved
January 1, 2010 – March 31, 2010	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
January 1, 2010 – March 31, 2010	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
January 1, 2010 – March 31, 2010	Monitoring, Regular	Heptachlor epoxide	—	Resolved
January 1, 2010 – March 31, 2010	Monitoring, Regular	Heptachlor	—	Resolved
January 1, 2010 – March 31, 2010	Monitoring, Regular	Toxaphene	—	Resolved
January 1, 2010 – March 31, 2010	Monitoring, Regular	Methoxychlor	—	Resolved
January 1, 2010 – March 31, 2010	Monitoring, Regular	Endrin	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	Trichloroethylene	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	Styrene	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	Ethylbenzene	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	Toluene	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	Benzene	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	CHLOROBENZENE	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	Tetrachloroethylene	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	Vinyl chloride	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	Xylenes, Total	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	Carbon tetrachloride	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2009 – June 1, 2011	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
January 1, 2009 – December 31, 2018	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring and Reporting (DBP)	TTHM	—	Resolved
January 1, 2007 – January 31, 2007	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
February 1, 2006 – February 28, 2006	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
January 1, 2006 – January 31, 2006	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
October 1, 2005 – October 31, 2005	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
February 1, 2005 – February 28, 2005	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
January 1, 2005 – December 31, 2005	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2005 – January 31, 2005	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
January 1, 2005 – December 31, 2005	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Benzene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Toluene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Styrene	—	Resolved
October 1, 2004 – October 31, 2004	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
August 1, 2004 – August 31, 2004	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
August 1, 2004 – August 31, 2004	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Archived
August 1, 2004 – August 31, 2004	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
July 1, 2004 – July 31, 2004	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
June 1, 2004 – June 30, 2004	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
May 1, 2004 – May 31, 2004	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
April 1, 2004 – April 30, 2004	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
March 1, 2004 – March 31, 2004	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
February 1, 2004 – February 29, 2004	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
November 1, 2003 – November 30, 2003	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
October 1, 2003 – October 31, 2003	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
August 1, 2003 – August 31, 2003	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
March 1, 2003 – March 31, 2003	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
February 1, 2003 – February 28, 2003	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
December 1, 2002 – December 31, 2002	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
November 1, 2002 – November 30, 2002	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
April 1, 2002 – April 30, 2002	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
September 1, 2001 – September 30, 2001	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	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
June 1, 2001 – June 30, 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
February 1, 2001 – February 28, 2001	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
June 1, 1999 – June 30, 1999	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
October 1, 1998 – October 31, 1998	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
July 1, 1998 – January 1, 1999	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
October 1, 1997 – October 31, 1997	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
September 1, 1996 – September 30, 1996	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
October 1, 1994 – October 31, 1994	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
June 1, 1994 – June 30, 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
December 1, 1993 – December 31, 1993	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	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	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Archived
November 1, 1993 – November 30, 1993	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
September 30, 1983 – September 29, 1984	Monitoring, Regular	Cadmium	—	Archived
September 30, 1983 – September 29, 1984	Monitoring, Regular	Selenium	—	Archived
September 30, 1983 – September 29, 1984	Monitoring, Regular	Nitrate	—	Archived
September 30, 1983 – September 29, 1984	Monitoring, Regular	Mercury	—	Archived
September 30, 1983 – September 29, 1984	Monitoring, Regular	Fluoride	—	Archived
September 30, 1983 – September 29, 1984	Monitoring, Regular	Chromium	—	Archived
September 30, 1983 – September 29, 1984	Monitoring, Regular	Barium	—	Archived

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

Enforcement actions

December 10, 2024State Formal Notice of Violation issued1 linked violation
June 30, 2024State Compliance achieved1 linked violation
April 18, 2023State Formal Notice of Violation issued1 linked violation
March 31, 2023State Compliance achieved1 linked violation
July 4, 2022State Compliance achieved1 linked violation
August 10, 2020State Compliance achieved1 linked violation
August 31, 2019State Compliance achieved1 linked violation
August 13, 2019State Compliance achieved1 linked violation
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 achieved3 linked violations
September 13, 2018State Formal Notice of Violation issued1 linked violation
June 30, 2018State Compliance achieved2 linked violations
June 28, 2018State Formal Notice of Violation issued2 linked violations
June 25, 2018State Formal Notice of Violation issued2 linked violations
June 13, 2018State Formal Notice of Violation issued2 linked violations
March 31, 2018State Compliance achieved2 linked violations
March 31, 2015State Formal Notice of Violation issued1 linked violation
August 20, 2014State Compliance achieved1 linked violation
December 11, 2011State Formal Notice of Violation issued1 linked violation
December 11, 2011State Formal Notice of Violation issued1 linked violation
June 1, 2011State Compliance achieved1 linked violation
June 1, 2011State Compliance achieved1 linked violation
June 1, 2011State Compliance achieved1 linked violation
September 30, 2010State Compliance achieved9 linked violations
May 3, 2010State Formal Notice of Violation issued9 linked violations
March 31, 2010State Compliance achieved21 linked violations
August 25, 2009State Formal Notice of Violation issued1 linked violation
August 25, 2009State Formal Notice of Violation issued1 linked violation
June 30, 2009State Compliance achieved1 linked violation
July 31, 2007State Compliance achieved1 linked violation
December 31, 2006State Compliance achieved21 linked violations
August 31, 2006State Compliance achieved3 linked violations
August 22, 2006State Formal Notice of Violation issued21 linked violations
August 12, 2005State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
October 4, 2004State Public Notification requested4 linked violations
August 12, 2004State Public Notification requested3 linked violations
May 19, 2004State Public Notification requested3 linked violations
February 9, 2004State Public Notification requested3 linked violations
November 14, 2003State Public Notification requested3 linked violations
August 14, 2003State Public Notification requested1 linked violation
May 12, 2003State Public Notification requested3 linked violations
August 12, 2002State Public Notification requested3 linked violations
February 11, 2002State Public Notification requested2 linked violations
September 14, 2001State Public Notification received2 linked violations
August 10, 2001State Public Notification requested1 linked violation
June 20, 2001State Public Notification received1 linked violation
May 7, 2001State Public Notification requested3 linked violations
November 13, 2000State Public Notification requested4 linked violations
August 10, 1999State Public Notification requested1 linked violation
May 13, 1999State Public Notification requested2 linked violations
April 14, 1999State Formal Notice of Violation issued1 linked violation
February 9, 1999State Public Notification requested2 linked violations
January 1, 1999State Compliance achieved1 linked violation
February 11, 1998State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
November 6, 1996State Public Notification requested1 linked violation
July 24, 1995State Public Notification received1 linked violation
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
May 19, 1994State Administrative/Compliance Order without penalty issued1 linked violation
February 18, 1994State Violation/Reminder Notice1 linked violation
January 29, 1994State Public Notification received2 linked violations
August 19, 1993State Public Notification receivedgeneral compliance action — not tied to a specific violation on record

Contact

RIO ARRIBA

787-620-2277

ARECIBO, PR 00612