Is YAUCO required to publish a Consumer Confidence Report?

Yes. YAUCO 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 YAUCO’s next Consumer Confidence Report due?

YAUCO’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.

YAUCO, PR · Yauco Municipio County

YAUCO Water System

Consumer Confidence Report status

YAUCO 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 YAUCO.

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): PR0004314
System type: Community Water System
Population served: 35,639
Service connections: 13,348
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

YAUCO is among the 20 largest community water systems in Puerto Rico, serving 35,639 people from surface water.

As of August 1, 2026, its federal record holds 107 entries between 1983 and 2020, all of which EPA lists as closed. Nothing has been added since 2020.

Of the 107, 88 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 synthetic organic chemicals, the Surface Water Treatment Rules, and inorganic chemicals.

Violation history

Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2020 – August 10, 2020
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2020 – June 30, 2020
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2020 – March 31, 2020
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
October 10, 2019 – January 3, 2020
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2019 – December 31, 2019
Resolved
Monitoring, Source Water (LT2)
—
E. COLI
August 1, 2019 – August 31, 2019
Resolved
Monitoring, Source Water (LT2)
—
Cryptosporidium
August 1, 2019 – August 31, 2019
Resolved
Monitoring, Source Water (LT2)
—
Turbidity
August 1, 2019 – August 31, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2019 – September 30, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2019 – June 30, 2019
Resolved
Monitoring, Regular
—
Glyphosate
January 1, 2019 – January 31, 2019
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
January 1, 2019 – March 31, 2019
Resolved
Monitoring, Regular
—
Atrazine
January 1, 2019 – March 31, 2019
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
January 1, 2019 – March 31, 2019
Resolved
Monitoring, Regular
—
Chlordane
January 1, 2019 – March 31, 2019
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
January 1, 2019 – March 31, 2019
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
January 1, 2019 – March 31, 2019
Resolved
Monitoring, Regular
—
Heptachlor epoxide
January 1, 2019 – March 31, 2019
Resolved
Monitoring, Regular
—
Heptachlor
January 1, 2019 – March 31, 2019
Resolved
Monitoring, Regular
—
LASSO
January 1, 2019 – March 31, 2019
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
January 1, 2019 – March 31, 2019
Resolved
Monitoring, Regular
—
Simazine
January 1, 2019 – March 31, 2019
Resolved
Monitoring, Regular
—
Toxaphene
January 1, 2019 – March 31, 2019
Resolved
Monitoring, Regular
—
Methoxychlor
January 1, 2019 – March 31, 2019
Resolved
Monitoring, Regular
—
BHC-GAMMA
January 1, 2019 – March 31, 2019
Resolved
Monitoring, Regular
—
Endrin
January 1, 2019 – March 31, 2019
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
October 1, 2018 – August 13, 2019
Resolved
Monitoring, Source Water (LT2)
—
E. COLI
April 1, 2018 – April 30, 2018
Resolved
Monitoring, Source Water (LT2)
—
Cryptosporidium
April 1, 2018 – April 30, 2018
Resolved
Monitoring, Source Water (LT2)
—
Turbidity
April 1, 2018 – April 30, 2018
Resolved
Monitoring, Source Water (LT2)
—
Cryptosporidium
February 1, 2018 – February 28, 2018
Resolved
Monitoring, Source Water (LT2)
—
Turbidity
February 1, 2018 – February 28, 2018
Resolved
Monitoring, Source Water (LT2)
—
E. COLI
February 1, 2018 – February 28, 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)
—
E. COLI
January 1, 2018 – January 31, 2018
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)
—
Cryptosporidium
June 1, 2017 – June 30, 2017
Resolved
Monitoring, Source Water (LT2)
—
E. COLI
June 1, 2017 – June 30, 2017
Resolved
Monitoring, Source Water (LT2)
—
E. COLI
May 1, 2017 – May 31, 2017
Resolved
Monitoring, Source Water (LT2)
—
Turbidity
February 1, 2017 – February 28, 2017
Resolved
Monitoring, Source Water (LT2)
—
E. COLI
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)
—
Turbidity
October 1, 2016 – October 31, 2016
Resolved
Monitoring, Source Water (LT2)
—
Cryptosporidium
October 1, 2016 – October 31, 2016
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
January 1, 2016 – December 31, 2018
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
January 1, 2015 – March 31, 2015
Resolved
Monitoring, Regular
—
Endrin
January 1, 2015 – March 31, 2015
Resolved
Monitoring, Regular
—
BHC-GAMMA
January 1, 2015 – March 31, 2015
Resolved
Monitoring, Regular
—
Endothall
January 1, 2015 – March 31, 2015
Resolved
Monitoring, Regular
—
Glyphosate
January 1, 2015 – March 31, 2015
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
January 1, 2015 – March 31, 2015
Resolved
Monitoring, Regular
—
OXAMYL
January 1, 2015 – March 31, 2015
Resolved
Monitoring, Regular
—
Simazine
January 1, 2015 – March 31, 2015
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 2015 – March 31, 2015
Resolved
Monitoring, Regular
—
Picloram
January 1, 2015 – March 31, 2015
Resolved
Monitoring, Regular
—
Dinoseb
January 1, 2015 – March 31, 2015
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
January 1, 2015 – March 31, 2015
Resolved
Monitoring, Regular
—
Carbofuran
January 1, 2015 – March 31, 2015
Resolved
Monitoring, Regular
—
Atrazine
January 1, 2015 – March 31, 2015
Resolved
Monitoring, Regular
—
LASSO
January 1, 2015 – March 31, 2015
Resolved
Monitoring, Regular
—
Heptachlor
January 1, 2015 – March 31, 2015
Resolved
Monitoring, Regular
—
Heptachlor epoxide
January 1, 2015 – March 31, 2015
Resolved
Monitoring, Regular
—
2,4-D
January 1, 2015 – March 31, 2015
Resolved
Monitoring, Regular
—
2,4,5-TP
January 1, 2015 – March 31, 2015
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
January 1, 2015 – March 31, 2015
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
January 1, 2015 – March 31, 2015
Resolved
Monitoring, Regular
—
Pentachlorophenol
January 1, 2015 – March 31, 2015
Resolved
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
January 1, 2015 – March 31, 2015
Resolved
Monitoring, Regular
—
ETHYLENE DIBROMIDE
January 1, 2015 – March 31, 2015
Resolved
Monitoring, Regular
—
Chlordane
January 1, 2015 – March 31, 2015
Resolved
Monitoring, Routine (IDSE)
—
Total Haloacetic Acids (HAA5)
October 1, 2014 – December 31, 2014
Resolved
Monitoring, Routine (IDSE)
—
TTHM
October 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Toxaphene
January 1, 2014 – March 31, 2014
Resolved
Monitoring, Routine (IDSE)
—
Total Haloacetic Acids (HAA5)
January 1, 2014 – March 31, 2014
Resolved
Monitoring, Regular
—
Heptachlor epoxide
January 1, 2014 – March 31, 2014
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 2011 – October 31, 2011
Archived
Monitoring, Source Water (LT2)
—
Cryptosporidium
December 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
Cadmium
January 1, 2007 – December 31, 2007
Resolved
Monitoring, Regular
—
Thallium, Total
January 1, 2007 – December 31, 2007
Resolved
Monitoring, Regular
—
Antimony, Total
January 1, 2007 – December 31, 2007
Resolved
Monitoring, Regular
—
Nickel
January 1, 2007 – December 31, 2007
Resolved
Monitoring, Regular
—
Mercury
January 1, 2007 – December 31, 2007
Resolved
Monitoring, Regular
—
Barium
January 1, 2007 – December 31, 2007
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
January 1, 2005 – March 31, 2005
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
November 1, 2004 – November 30, 2004
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
October 1, 2004 – October 31, 2004
Archived
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
April 1, 2004 – June 30, 2004
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
December 1, 2001 – December 31, 2001
Archived
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
August 1, 2001 – August 31, 2001
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
August 1, 1999 – August 31, 1999
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
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
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
September 1, 1998 – September 30, 1998
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
September 1, 1994 – September 30, 1994
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
—
Chromium
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
—
Cadmium
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
July 1, 2020 – August 10, 2020	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
April 1, 2020 – June 30, 2020	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
January 1, 2020 – March 31, 2020	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
October 10, 2019 – January 3, 2020	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
October 1, 2019 – December 31, 2019	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
August 1, 2019 – August 31, 2019	Monitoring, Source Water (LT2)	E. COLI	—	Resolved
August 1, 2019 – August 31, 2019	Monitoring, Source Water (LT2)	Cryptosporidium	—	Resolved
August 1, 2019 – August 31, 2019	Monitoring, Source Water (LT2)	Turbidity	—	Resolved
July 1, 2019 – September 30, 2019	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
April 1, 2019 – June 30, 2019	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
January 1, 2019 – January 31, 2019	Monitoring, Regular	Glyphosate	—	Resolved
January 1, 2019 – March 31, 2019	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
January 1, 2019 – March 31, 2019	Monitoring, Regular	Atrazine	—	Resolved
January 1, 2019 – March 31, 2019	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
January 1, 2019 – March 31, 2019	Monitoring, Regular	Chlordane	—	Resolved
January 1, 2019 – March 31, 2019	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
January 1, 2019 – March 31, 2019	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
January 1, 2019 – March 31, 2019	Monitoring, Regular	Heptachlor epoxide	—	Resolved
January 1, 2019 – March 31, 2019	Monitoring, Regular	Heptachlor	—	Resolved
January 1, 2019 – March 31, 2019	Monitoring, Regular	LASSO	—	Resolved
January 1, 2019 – March 31, 2019	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
January 1, 2019 – March 31, 2019	Monitoring, Regular	Simazine	—	Resolved
January 1, 2019 – March 31, 2019	Monitoring, Regular	Toxaphene	—	Resolved
January 1, 2019 – March 31, 2019	Monitoring, Regular	Methoxychlor	—	Resolved
January 1, 2019 – March 31, 2019	Monitoring, Regular	BHC-GAMMA	—	Resolved
January 1, 2019 – March 31, 2019	Monitoring, Regular	Endrin	—	Resolved
October 1, 2018 – August 13, 2019	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
April 1, 2018 – April 30, 2018	Monitoring, Source Water (LT2)	E. COLI	—	Resolved
April 1, 2018 – April 30, 2018	Monitoring, Source Water (LT2)	Cryptosporidium	—	Resolved
April 1, 2018 – April 30, 2018	Monitoring, Source Water (LT2)	Turbidity	—	Resolved
February 1, 2018 – February 28, 2018	Monitoring, Source Water (LT2)	Cryptosporidium	—	Resolved
February 1, 2018 – February 28, 2018	Monitoring, Source Water (LT2)	Turbidity	—	Resolved
February 1, 2018 – February 28, 2018	Monitoring, Source Water (LT2)	E. COLI	—	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
January 1, 2018 – January 31, 2018	Monitoring, Source Water (LT2)	E. COLI	—	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)	Cryptosporidium	—	Resolved
June 1, 2017 – June 30, 2017	Monitoring, Source Water (LT2)	E. COLI	—	Resolved
May 1, 2017 – May 31, 2017	Monitoring, Source Water (LT2)	E. COLI	—	Resolved
February 1, 2017 – February 28, 2017	Monitoring, Source Water (LT2)	Turbidity	—	Resolved
February 1, 2017 – February 28, 2017	Monitoring, Source Water (LT2)	E. COLI	—	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
October 1, 2016 – October 31, 2016	Monitoring, Source Water (LT2)	Turbidity	—	Resolved
October 1, 2016 – October 31, 2016	Monitoring, Source Water (LT2)	Cryptosporidium	—	Resolved
January 1, 2016 – December 31, 2018	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
January 1, 2015 – March 31, 2015	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
January 1, 2015 – March 31, 2015	Monitoring, Regular	Endrin	—	Resolved
January 1, 2015 – March 31, 2015	Monitoring, Regular	BHC-GAMMA	—	Resolved
January 1, 2015 – March 31, 2015	Monitoring, Regular	Endothall	—	Resolved
January 1, 2015 – March 31, 2015	Monitoring, Regular	Glyphosate	—	Resolved
January 1, 2015 – March 31, 2015	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
January 1, 2015 – March 31, 2015	Monitoring, Regular	OXAMYL	—	Resolved
January 1, 2015 – March 31, 2015	Monitoring, Regular	Simazine	—	Resolved
January 1, 2015 – March 31, 2015	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
January 1, 2015 – March 31, 2015	Monitoring, Regular	Picloram	—	Resolved
January 1, 2015 – March 31, 2015	Monitoring, Regular	Dinoseb	—	Resolved
January 1, 2015 – March 31, 2015	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
January 1, 2015 – March 31, 2015	Monitoring, Regular	Carbofuran	—	Resolved
January 1, 2015 – March 31, 2015	Monitoring, Regular	Atrazine	—	Resolved
January 1, 2015 – March 31, 2015	Monitoring, Regular	LASSO	—	Resolved
January 1, 2015 – March 31, 2015	Monitoring, Regular	Heptachlor	—	Resolved
January 1, 2015 – March 31, 2015	Monitoring, Regular	Heptachlor epoxide	—	Resolved
January 1, 2015 – March 31, 2015	Monitoring, Regular	2,4-D	—	Resolved
January 1, 2015 – March 31, 2015	Monitoring, Regular	2,4,5-TP	—	Resolved
January 1, 2015 – March 31, 2015	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
January 1, 2015 – March 31, 2015	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
January 1, 2015 – March 31, 2015	Monitoring, Regular	Pentachlorophenol	—	Resolved
January 1, 2015 – March 31, 2015	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Resolved
January 1, 2015 – March 31, 2015	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Resolved
January 1, 2015 – March 31, 2015	Monitoring, Regular	Chlordane	—	Resolved
October 1, 2014 – December 31, 2014	Monitoring, Routine (IDSE)	Total Haloacetic Acids (HAA5)	—	Resolved
October 1, 2014 – December 31, 2014	Monitoring, Routine (IDSE)	TTHM	—	Resolved
January 1, 2014 – March 31, 2014	Monitoring, Regular	Toxaphene	—	Resolved
January 1, 2014 – March 31, 2014	Monitoring, Routine (IDSE)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2014 – March 31, 2014	Monitoring, Regular	Heptachlor epoxide	—	Resolved
October 1, 2011 – October 31, 2011	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
December 1, 2009 – December 31, 2009	Monitoring, Source Water (LT2)	Cryptosporidium	—	Resolved
January 1, 2007 – December 31, 2007	Monitoring, Regular	Cadmium	—	Resolved
January 1, 2007 – December 31, 2007	Monitoring, Regular	Thallium, Total	—	Resolved
January 1, 2007 – December 31, 2007	Monitoring, Regular	Antimony, Total	—	Resolved
January 1, 2007 – December 31, 2007	Monitoring, Regular	Nickel	—	Resolved
January 1, 2007 – December 31, 2007	Monitoring, Regular	Mercury	—	Resolved
January 1, 2007 – December 31, 2007	Monitoring, Regular	Barium	—	Resolved
January 1, 2005 – March 31, 2005	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Archived
November 1, 2004 – November 30, 2004	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
October 1, 2004 – October 31, 2004	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
April 1, 2004 – June 30, 2004	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
December 1, 2001 – December 31, 2001	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
August 1, 2001 – August 31, 2001	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Archived
August 1, 1999 – August 31, 1999	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
December 1, 1998 – December 31, 1998	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	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	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Archived
September 1, 1994 – September 30, 1994	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	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	Chromium	—	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	Cadmium	—	Archived

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

Enforcement actions

September 30, 2020State Compliance achieved5 linked violations
August 10, 2020State Compliance achieved1 linked violation
July 31, 2020State Compliance achievedgeneral compliance action — not tied to a specific violation on record
June 30, 2020State Compliance achieved20 linked violations
March 31, 2020State Compliance achieved16 linked violations
February 10, 2020State Civil Case filed in State court1 linked violation
January 3, 2020State Compliance achieved1 linked violation
January 3, 2020State Compliance achieved1 linked violation
December 5, 2019State Formal Notice of Violation issued1 linked violation
October 18, 2019State Formal Notice of Violation issued18 linked violations
October 18, 2019State Compliance achieved3 linked violations
September 30, 2019State Compliance achieved3 linked violations
August 13, 2019State Compliance achieved1 linked violation
July 23, 2019State Civil Case filed in State court2 linked violations
July 10, 2019State Formal Notice of Violation issued1 linked violation
December 31, 2018State Compliance achieved2 linked violations
November 30, 2018State Compliance achieved9 linked violations
August 13, 2018State Formal Notice of Violation issued9 linked violations
March 31, 2018State Compliance achieved6 linked violations
October 31, 2017State Formal Notice of Violation issued3 linked violations
August 31, 2017State Compliance achieved27 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 13, 2016State Formal Notice of Violation issued3 linked violations
February 19, 2016State Formal Notice of Violation issued1 linked violation
June 30, 2015State Compliance achieved29 linked violations
May 6, 2015State Formal Notice of Violation issued29 linked violations
March 31, 2015State Compliance achieved2 linked violations
February 9, 2015State Formal Notice of Violation issued2 linked violations
August 11, 2014State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
August 4, 2014State Compliance achieved1 linked violation
July 15, 2014State Formal Notice of Violation issued2 linked violations
June 30, 2014State Compliance achieved9 linked violations
May 7, 2014State Formal Notice of Violation issued1 linked violation
April 30, 2014State Formal Notice of Violation issued9 linked violations
March 31, 2014State Compliance achieved2 linked violations
March 31, 2014State Compliance achieved1 linked violation
February 6, 2013State Formal Notice of Violation issued1 linked violation
December 31, 2010State Compliance achieved10 linked violations
January 31, 2010State Compliance achieved2 linked violations
June 24, 2008State Civil Case filed in State court2 linked violations
May 31, 2007State Compliance achieved4 linked violations
February 5, 2007State Formal Notice of Violation issued2 linked violations
February 5, 2007State Formal Notice of Violation issued2 linked violations
August 23, 2006State Formal Notice of Violation issued3 linked violations
October 4, 2001State Public Notification received1 linked violation
July 19, 2001State Public Notification received1 linked violation
November 12, 1999State Public Notification requested1 linked violation
February 9, 1999State Public Notification requested3 linked violations
November 10, 1998State Public Notification requested2 linked violations
November 6, 1996State Public Notification requested1 linked violation
January 28, 1994State Public Notification received1 linked violation
July 21, 1993State Public Notification received1 linked violation
September 20, 1992State Public Notification received1 linked violation

Common questions

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

YAUCO

787-620-2277

YAUCO, PR 00698