SAN SEBASTIAN, PR · San Sebastian Municipio County

PERCHAS Water System

Inactive system

This water system is marked inactive in EPA’s federal records as of June 3, 2011. It is no longer an operating public water system under this PWSID, and no compliance deadlines — including the 2027 Consumer Confidence Report rule — apply to it.

If you are a resident looking for your current water provider, see water systems in San Sebastian Municipio County, PR.

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): PR0003443
System type: Community Water System
Population served: 3,284
Service connections: 665
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

PERCHAS is one of 231 community water systems in Puerto Rico in the 501 to 3,300 people size category, formerly serving 3,284 people from surface water.

EPA's federal records list this system as inactive in 2011; the record below is historical.

As of August 1, 2026, its federal record holds 58 entries between 1980 and 2011, all of which EPA lists as closed. Nothing has been added since 2011.

Of the 58, 25 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, inorganic chemicals, and the Stage 1 Disinfectants and Disinfection Byproducts Rule.

Violation history

Monitoring, Source Water (LT2)
—
Cryptosporidium
December 1, 2011 – June 3, 2011
Archived
Monitoring, Source Water (LT2)
—
Cryptosporidium
November 1, 2011 – June 3, 2011
Archived
Monitoring, Source Water (LT2)
—
Cryptosporidium
October 1, 2011 – June 3, 2011
Archived
Monitoring, Source Water (LT2)
—
Cryptosporidium
September 1, 2011 – June 3, 2011
Archived
Monitoring, Source Water (LT2)
—
Cryptosporidium
August 1, 2011 – June 3, 2011
Archived
Monitoring, Source Water (LT2)
—
Cryptosporidium
July 1, 2011 – June 3, 2011
Archived
Monitoring, Source Water (LT2)
—
Cryptosporidium
June 1, 2011 – June 3, 2011
Archived
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
April 1, 2010 – June 30, 2010
Archived
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
January 1, 2010 – March 31, 2010
Archived
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
October 1, 2009 – December 31, 2009
Archived
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
July 1, 2009 – September 30, 2009
Archived
Lead Consumer Notice
—
Lead and Copper Rule
April 1, 2009 – June 3, 2011
Archived
Lead Consumer Notice
—
Lead and Copper Rule
October 1, 2008 – January 1, 2009
Resolved
Monitoring and Reporting (DBP)
—
TTHM
July 1, 2005 – September 30, 2005
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
September 1, 2003 – September 30, 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
April 1, 2003 – April 30, 2003
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
January 1, 2003 – January 31, 2003
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
October 1, 2002 – October 31, 2002
Archived
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
October 1, 2002 – October 31, 2002
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
May 1, 2002 – May 31, 2002
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
February 1, 2002 – February 28, 2002
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
January 1, 2002 – January 31, 2002
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
December 1, 2001 – December 31, 2001
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
October 1, 2001 – October 31, 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
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
July 1, 2001 – July 31, 2001
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
June 1, 2001 – June 30, 2001
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
March 1, 2001 – March 31, 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
January 1, 2001 – January 31, 2001
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
September 1, 2000 – September 30, 2000
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
July 1, 2000 – July 31, 2000
Archived
Treatment Technique (SWTR and GWR)
Health-based
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
December 1, 1999 – December 31, 1999
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
November 1, 1999 – November 30, 1999
Archived
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
October 1, 1998 – October 31, 1998
Archived
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
October 1, 1998 – October 31, 1998
Archived
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
September 1, 1998 – September 30, 1998
Archived
Monitoring, Regular
—
Antimony, Total
January 1, 1998 – December 31, 1998
Archived
Monitoring, Regular
—
Beryllium, Total
January 1, 1998 – December 31, 1998
Archived
Monitoring, Regular
—
Thallium, Total
January 1, 1998 – December 31, 1998
Archived
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
May 1, 1994 – May 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
Monitoring, Regular
—
Cadmium
September 30, 1983 – September 29, 1984
Archived
Monitoring, Regular
—
Barium
September 30, 1983 – September 29, 1984
Archived
Monitoring, Regular
—
Selenium
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
—
Gross Alpha, Excl. Radon and U
September 1, 1980 – September 30, 1980
Archived

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

Period	Violation	Contaminant / rule	Health-based	Status
December 1, 2011 – June 3, 2011	Monitoring, Source Water (LT2)	Cryptosporidium	—	Archived
November 1, 2011 – June 3, 2011	Monitoring, Source Water (LT2)	Cryptosporidium	—	Archived
October 1, 2011 – June 3, 2011	Monitoring, Source Water (LT2)	Cryptosporidium	—	Archived
September 1, 2011 – June 3, 2011	Monitoring, Source Water (LT2)	Cryptosporidium	—	Archived
August 1, 2011 – June 3, 2011	Monitoring, Source Water (LT2)	Cryptosporidium	—	Archived
July 1, 2011 – June 3, 2011	Monitoring, Source Water (LT2)	Cryptosporidium	—	Archived
June 1, 2011 – June 3, 2011	Monitoring, Source Water (LT2)	Cryptosporidium	—	Archived
April 1, 2010 – June 30, 2010	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
January 1, 2010 – March 31, 2010	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
October 1, 2009 – December 31, 2009	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
July 1, 2009 – September 30, 2009	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
April 1, 2009 – June 3, 2011	Lead Consumer Notice	Lead and Copper Rule	—	Archived
October 1, 2008 – January 1, 2009	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
July 1, 2005 – September 30, 2005	Monitoring and Reporting (DBP)	TTHM	—	Archived
February 1, 2004 – February 29, 2004	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
September 1, 2003 – September 30, 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
April 1, 2003 – April 30, 2003	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
January 1, 2003 – January 31, 2003	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
October 1, 2002 – October 31, 2002	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
October 1, 2002 – October 31, 2002	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Archived
May 1, 2002 – May 31, 2002	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
February 1, 2002 – February 28, 2002	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
January 1, 2002 – January 31, 2002	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
December 1, 2001 – December 31, 2001	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
November 1, 2001 – November 30, 2001	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
October 1, 2001 – October 31, 2001	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	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
July 1, 2001 – July 31, 2001	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
June 1, 2001 – June 30, 2001	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
March 1, 2001 – March 31, 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
January 1, 2001 – January 31, 2001	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	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	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
July 1, 2000 – July 31, 2000	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
March 1, 2000 – March 31, 2000	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
February 1, 2000 – February 29, 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
November 1, 1999 – November 30, 1999	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
October 1, 1998 – October 31, 1998	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Archived
October 1, 1998 – October 31, 1998	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Archived
September 1, 1998 – September 30, 1998	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Archived
January 1, 1998 – December 31, 1998	Monitoring, Regular	Antimony, Total	—	Archived
January 1, 1998 – December 31, 1998	Monitoring, Regular	Beryllium, Total	—	Archived
January 1, 1998 – December 31, 1998	Monitoring, Regular	Thallium, Total	—	Archived
May 1, 1994 – May 31, 1994	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	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
September 30, 1983 – September 29, 1984	Monitoring, Regular	Cadmium	—	Archived
September 30, 1983 – September 29, 1984	Monitoring, Regular	Barium	—	Archived
September 30, 1983 – September 29, 1984	Monitoring, Regular	Selenium	—	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 1, 1980 – September 30, 1980	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived

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

Enforcement actions

June 21, 2012State Formal Notice of Violation issued7 linked violations
August 27, 2010State Formal Notice of Violation issued4 linked violations
January 1, 2009State Compliance achieved1 linked violation
March 30, 2006State Formal Notice of Violation issued1 linked violation
January 1, 2006State Compliance achieved1 linked violation
November 15, 2005State Formal Notice of Violation issued1 linked violation
May 19, 2004State Public Notification requested1 linked violation
February 9, 2004State Public Notification requested1 linked violation
November 14, 2003State Public Notification requested3 linked violations
August 14, 2003State Public Notification requested1 linked violation
May 12, 2003State Public Notification requested1 linked violation
August 12, 2002State Public Notification requested3 linked violations
May 13, 2002State Public Notification requested3 linked violations
February 11, 2002State Public Notification requested2 linked violations
December 18, 2001State Public Notification received1 linked violation
November 13, 2001State Public Notification received1 linked violation
October 4, 2001State Public Notification received1 linked violation
September 14, 2001State Public Notification received1 linked violation
August 10, 2001State Public Notification requested1 linked violation
July 19, 2001State Public Notification received1 linked violation
June 20, 2001State Public Notification received1 linked violation
May 7, 2001State Public Notification requested2 linked violations
November 13, 2000State Public Notification requested4 linked violations
February 29, 2000State Violation/Reminder Notice3 linked violations
February 8, 2000State Public Notification requested2 linked violations
June 24, 1999State Formal Notice of Violation issued3 linked violations
February 9, 1999State Public Notification requested2 linked violations
November 10, 1998State Public Notification requested1 linked violation
November 20, 1997State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
May 8, 1996State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
March 14, 1995State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
February 7, 1995State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
November 30, 1994State Formal Notice of Violation issued1 linked violation
August 22, 1994State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
June 29, 1994State Public Notification received1 linked violation
April 20, 1994State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
March 4, 1994State Administrative/Compliance Order without penalty issued1 linked violation
January 29, 1994State Public Notification received3 linked violations
January 28, 1994State 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

Last known contact on file (system is inactive)

PERCHAS

787-620-2277

SAN SEBASTIAN, PR 00685