SAN LORENZO, PR · San Lorenzo Municipio County

EL CERRO CORP. Water System

Current status

1 open health-based violation on record as of July 4, 2026, alongside 1 other open item(s). See the violation history below for contaminant and status details.

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): PR0666106
System type: Community Water System
Population served: 192
Service connections: 74
Ownership: privately owned
Water source: groundwater (wells)

Violation history

LSL Inventory
Health-based
LEAD AND COPPER RULE REVISIONS
October 17, 2024
Unaddressed
LSL Reporting
—
LEAD AND COPPER RULE REVISIONS
October 17, 2024
Unaddressed
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
January 1, 2016 – January 31, 2016
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 1, 2014 – July 31, 2014
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
June 1, 2014 – June 30, 2014
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 2014 – April 30, 2014
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
March 1, 2014 – March 31, 2014
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
February 1, 2014 – February 28, 2014
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
January 1, 2014 – January 31, 2014
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 2013 – October 31, 2013
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
August 1, 2013 – August 31, 2013
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
June 1, 2013 – June 30, 2013
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
March 1, 2013 – March 31, 2013
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
January 1, 2013 – January 31, 2013
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
April 1, 2012 – April 30, 2012
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
June 1, 2011 – June 30, 2011
Archived
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
May 1, 2011 – May 31, 2011
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
March 1, 2011 – March 31, 2011
Archived
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
February 1, 2011 – February 28, 2011
Archived
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
November 1, 2010 – November 30, 2010
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 2010 – October 31, 2010
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
September 1, 2010 – September 30, 2010
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
June 1, 2010 – June 30, 2010
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
February 1, 2010 – February 28, 2010
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
November 1, 2009 – November 30, 2009
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 2009 – August 31, 2009
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 2009 – April 30, 2009
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 2008 – August 31, 2008
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
April 1, 2008 – April 30, 2008
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 2007 – August 31, 2007
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
November 1, 2005 – November 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)
February 1, 2005 – February 28, 2005
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
December 1, 2004 – December 31, 2004
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
June 1, 2004 – June 30, 2004
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 2004 – April 30, 2004
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
February 1, 2004 – February 29, 2004
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
July 1, 2003 – July 31, 2003
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
January 1, 2003 – January 31, 2003
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
December 1, 2002 – December 31, 2002
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
November 1, 2002 – November 30, 2002
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
February 1, 2002 – February 28, 2002
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
February 1, 2001 – February 28, 2001
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
November 1, 2000 – November 30, 2000
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
March 1, 2000 – March 31, 2000
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
February 1, 2000 – February 29, 2000
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
January 1, 2000 – January 31, 2000
Archived
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
December 1, 1999 – December 31, 1999
Archived
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
November 1, 1999 – November 30, 1999
Archived
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
October 1, 1999 – October 31, 1999
Archived
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
June 1, 1999 – June 30, 1999
Archived
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
May 1, 1999 – May 31, 1999
Archived
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
April 1, 1999 – April 30, 1999
Archived

Unaddressed no corrective action on record yetResolved 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
October 17, 2024	LSL Inventory	LEAD AND COPPER RULE REVISIONS	Health-based	Unaddressed
October 17, 2024	LSL Reporting	LEAD AND COPPER RULE REVISIONS	—	Unaddressed
January 1, 2016 – January 31, 2016	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 2014 – July 31, 2014	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
June 1, 2014 – June 30, 2014	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
April 1, 2014 – April 30, 2014	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
March 1, 2014 – March 31, 2014	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
February 1, 2014 – February 28, 2014	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2014 – January 31, 2014	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
October 1, 2013 – October 31, 2013	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
August 1, 2013 – August 31, 2013	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
June 1, 2013 – June 30, 2013	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
March 1, 2013 – March 31, 2013	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
January 1, 2013 – January 31, 2013	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
April 1, 2012 – April 30, 2012	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
June 1, 2011 – June 30, 2011	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
May 1, 2011 – May 31, 2011	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Archived
March 1, 2011 – March 31, 2011	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
February 1, 2011 – February 28, 2011	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Archived
November 1, 2010 – November 30, 2010	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Archived
October 1, 2010 – October 31, 2010	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
September 1, 2010 – September 30, 2010	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
June 1, 2010 – June 30, 2010	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
February 1, 2010 – February 28, 2010	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
November 1, 2009 – November 30, 2009	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
August 1, 2009 – August 31, 2009	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
April 1, 2009 – April 30, 2009	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
August 1, 2008 – August 31, 2008	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
April 1, 2008 – April 30, 2008	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
August 1, 2007 – August 31, 2007	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
November 1, 2005 – November 30, 2005	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
August 1, 2005 – August 31, 2005	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Archived
February 1, 2005 – February 28, 2005	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
December 1, 2004 – December 31, 2004	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
June 1, 2004 – June 30, 2004	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
April 1, 2004 – April 30, 2004	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
February 1, 2004 – February 29, 2004	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
July 1, 2003 – July 31, 2003	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
January 1, 2003 – January 31, 2003	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
December 1, 2002 – December 31, 2002	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
November 1, 2002 – November 30, 2002	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
February 1, 2002 – February 28, 2002	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
February 1, 2001 – February 28, 2001	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
November 1, 2000 – November 30, 2000	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
March 1, 2000 – March 31, 2000	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
February 1, 2000 – February 29, 2000	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
January 1, 2000 – January 31, 2000	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
December 1, 1999 – December 31, 1999	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Archived
November 1, 1999 – November 30, 1999	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Archived
October 1, 1999 – October 31, 1999	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Archived
June 1, 1999 – June 30, 1999	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Archived
May 1, 1999 – May 31, 1999	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Archived
April 1, 1999 – April 30, 1999	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Archived

Unaddressed no corrective action on record yetResolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

March 26, 2025State Formal Notice of Violation issued6 linked violations
September 30, 2010State Formal Notice of Violation issued47 linked violations
August 15, 2005State Public Notification issuedgeneral compliance action — not tied to a specific violation on record
August 13, 2004State Public Notification issued14 linked violations
June 15, 2004State Violation/Reminder Notice2 linked violations
April 27, 2004State Public Notification issued1 linked violation
September 18, 2003State Public Notification issued1 linked violation
July 23, 2003State Violation/Reminder Notice1 linked violation
March 13, 2003State Violation/Reminder Notice1 linked violation
June 13, 2002State Violation/Reminder Notice1 linked violation
April 16, 2002State Violation/Reminder Notice1 linked violation
December 28, 2001State Violation/Reminder Notice1 linked violation
April 18, 2001State Violation/Reminder Notice1 linked violation
May 3, 2000State Violation/Reminder Notice1 linked violation
April 12, 2000State Violation/Reminder Notice1 linked violation
March 13, 2000State Public Notification issued1 linked violation
February 2, 2000State Public Notification issued1 linked violation
January 12, 2000State Public Notification issued1 linked violation
December 7, 1999State Violation/Reminder Notice1 linked violation
November 15, 1999State Violation/Reminder Notice1 linked violation
October 5, 1999State Violation/Reminder Notice2 linked violations
September 8, 1999State Violation/Reminder Notice2 linked violations
August 10, 1999State Violation/Reminder Notice1 linked violation
July 8, 1999State Violation/Reminder Notice1 linked violation
June 8, 1999State Violation/Reminder Notice1 linked violation

Contact

EL CERRO

787-736-7310

SAN LORENZO, PR 00754