Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	PR0004915
PWS Name	COQUI
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	Territory
Is Wholesaler?	No
Population Served	6237
County Served	Salinas Municipio

The tables below list all violations that the state reported to EPA for this water system. Health-based violations are listed first, followed by treatment technique, MRDL, monitoring, reporting, and other violations.

Health-based	Violations of maximum contaminant levels (MCLs) or maximum residual disinfectant levels (MRDLs), which specify the highest concentrations of contaminants or disinfectants, respectively, allowed in drinking water; or of treatment technique (TT) rules, which specify required processes intended to reduce the amounts of contaminants in drinking water. MCLs, MRDLs, and treatment technique rules are all health-based drinking water standards.
Maximum Contaminant Level or MCL	The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology.
Treatment Technique	A required process intended to reduce the level of a contaminant in drinking water.
Maximum residual disinfectant level or MRDL	The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.
Monitoring & reporting	Failure to conduct regular monitoring of drinking water quality, as required by SDWA, or to submit monitoring results in a timely fashion to the primacy agency or EPA.
Public notification & other	Failure to provide notification to the public as required by the Violations of Public Notification Rule and the Consumer Confidence Report Rule, and violations of other requirements such as those violations related to variances and exemptions.

Violations

Violation Category Code	Violation Type Description	Rule Name	Contaminant Name	Violation ID	Compliance Status Description	Compliance Period Begin Date	Compliance Period End Date	Is Health Based Ind
MR	Monitoring, Source Water (GWR)	Ground Water Rule	E. COLI	7011541	Returned to Compliance	01-OCT-2025	-	No
MR	Monitoring, Source Water (GWR)	Ground Water Rule	E. COLI	7011540	Returned to Compliance	01-OCT-2025	-	No
MR	Monitoring, Source Water (GWR)	Ground Water Rule	E. COLI	7011542	Returned to Compliance	01-OCT-2025	-	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	7011539	Returned to Compliance	01-JUL-2024	30-SEP-2024	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	7011538	Returned to Compliance	01-JUL-2024	30-SEP-2024	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	7011537	Returned to Compliance	01-APR-2024	30-JUN-2024	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	7011536	Returned to Compliance	01-JAN-2024	31-MAR-2024	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	7011535	Returned to Compliance	01-JAN-2024	31-MAR-2024	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	7011533	Returned to Compliance	01-JAN-2024	31-MAR-2024	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	7011534	Returned to Compliance	01-JAN-2024	31-MAR-2024	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	7011528	Returned to Compliance	01-JUL-2020	-	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	1,2-DIBROMO-3-CHLOROPROPANE	7011529	Returned to Compliance	01-JUL-2019	30-SEP-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	ETHYLENE DIBROMIDE	7011530	Returned to Compliance	01-JUL-2019	30-SEP-2019	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	7011527	Returned to Compliance	01-OCT-2018	-	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor	7011516	Returned to Compliance	01-APR-2018	30-JUN-2018	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor epoxide	7011517	Returned to Compliance	01-APR-2018	30-JUN-2018	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	7011514	Returned to Compliance	01-APR-2018	30-JUN-2018	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Carbofuran	7011513	Returned to Compliance	01-APR-2018	30-JUN-2018	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Hexachlorocyclopentadiene	7011512	Returned to Compliance	01-APR-2018	30-JUN-2018	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dinoseb	7011511	Returned to Compliance	01-APR-2018	30-JUN-2018	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Picloram	7011510	Returned to Compliance	01-APR-2018	30-JUN-2018	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	7011509	Returned to Compliance	01-APR-2018	30-JUN-2018	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Simazine	7011508	Returned to Compliance	01-APR-2018	30-JUN-2018	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	OXAMYL	7011507	Returned to Compliance	01-APR-2018	30-JUN-2018	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) adipate	7011506	Returned to Compliance	01-APR-2018	30-JUN-2018	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Glyphosate	7011505	Returned to Compliance	01-APR-2018	30-JUN-2018	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endothall	7011504	Returned to Compliance	01-APR-2018	30-JUN-2018	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Diquat	7011503	Returned to Compliance	01-APR-2018	30-JUN-2018	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dalapon	7011502	Returned to Compliance	01-APR-2018	30-JUN-2018	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Toxaphene	7011501	Returned to Compliance	01-APR-2018	30-JUN-2018	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Methoxychlor	7011500	Returned to Compliance	01-APR-2018	30-JUN-2018	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	BHC-GAMMA	7011499	Returned to Compliance	01-APR-2018	30-JUN-2018	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endrin	7011498	Returned to Compliance	01-APR-2018	30-JUN-2018	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	ETHYLENE DIBROMIDE	7011525	Returned to Compliance	01-APR-2018	30-JUN-2018	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	1,2-DIBROMO-3-CHLOROPROPANE	7011524	Returned to Compliance	01-APR-2018	30-JUN-2018	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Chlordane	7011526	Returned to Compliance	01-APR-2018	30-JUN-2018	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Pentachlorophenol	7011522	Returned to Compliance	01-APR-2018	30-JUN-2018	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Benzo(a)pyrene	7011521	Returned to Compliance	01-APR-2018	30-JUN-2018	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	HEXACHLOROBENZENE	7011520	Returned to Compliance	01-APR-2018	30-JUN-2018	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4,5-TP	7011519	Returned to Compliance	01-APR-2018	30-JUN-2018	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4-D	7011518	Returned to Compliance	01-APR-2018	30-JUN-2018	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	LASSO	7011515	Returned to Compliance	01-APR-2018	30-JUN-2018	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Total Polychlorinated Biphenyls (PCB)	7011523	Returned to Compliance	01-APR-2018	30-JUN-2018	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	7011490	Returned to Compliance	01-JUL-2014	-	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) adipate	7011494	Returned to Compliance	01-APR-2014	30-JUN-2014	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	7011495	Returned to Compliance	01-APR-2014	30-JUN-2014	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Benzo(a)pyrene	7011493	Returned to Compliance	01-APR-2014	30-JUN-2014	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7011492	Returned to Compliance	01-OCT-2013	31-DEC-2013	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	7011491	Returned to Compliance	01-OCT-2013	31-DEC-2013	No
MR	Lead Consumer Notice	Lead and Copper Rule	Lead and Copper Rule	7011489	Returned to Compliance	01-JUL-2013	-	No

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Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
7293950	7011540	SFJ	State Formal Notice of Violation issued	12-NOV-2025	State	-
7293950	7011542	SFJ	State Formal Notice of Violation issued	12-NOV-2025	State	-
7293950	7011541	SFJ	State Formal Notice of Violation issued	12-NOV-2025	State	-
7293949	7011538	SOX	State Compliance achieved	31-DEC-2024	State	-
7293949	7011539	SOX	State Compliance achieved	31-DEC-2024	State	-
7293943	7011535	SFJ	State Formal Notice of Violation issued	10-DEC-2024	State	-
7293946	7011537	SFJ	State Formal Notice of Violation issued	10-DEC-2024	State	-
7293943	7011534	SFJ	State Formal Notice of Violation issued	10-DEC-2024	State	-
7293943	7011533	SFJ	State Formal Notice of Violation issued	10-DEC-2024	State	-
7293943	7011536	SFJ	State Formal Notice of Violation issued	10-DEC-2024	State	-
7293941	7011528	SOX	State Compliance achieved	06-AUG-2020	State	-
7293937	7011465	SOX	State Compliance achieved	18-OCT-2019	State	-
7293937	7011469	SOX	State Compliance achieved	18-OCT-2019	State	-
7293937	7011468	SOX	State Compliance achieved	18-OCT-2019	State	-
7293937	7011489	SOX	State Compliance achieved	18-OCT-2019	State	-
7293939	7011530	SOX	State Compliance achieved	30-SEP-2019	State	-
7293939	7011529	SOX	State Compliance achieved	30-SEP-2019	State	-
7293936	7011527	SOX	State Compliance achieved	13-AUG-2019	State	-
7293938	7011498	SOX	State Compliance achieved	30-SEP-2018	State	-
7293938	7011526	SOX	State Compliance achieved	30-SEP-2018	State	-
7293938	7011500	SOX	State Compliance achieved	30-SEP-2018	State	-
7293938	7011501	SOX	State Compliance achieved	30-SEP-2018	State	-
7293938	7011502	SOX	State Compliance achieved	30-SEP-2018	State	-
7293938	7011503	SOX	State Compliance achieved	30-SEP-2018	State	-
7293938	7011504	SOX	State Compliance achieved	30-SEP-2018	State	-
7293938	7011505	SOX	State Compliance achieved	30-SEP-2018	State	-
7293938	7011506	SOX	State Compliance achieved	30-SEP-2018	State	-
7293938	7011507	SOX	State Compliance achieved	30-SEP-2018	State	-
7293938	7011508	SOX	State Compliance achieved	30-SEP-2018	State	-
7293938	7011509	SOX	State Compliance achieved	30-SEP-2018	State	-
7293938	7011510	SOX	State Compliance achieved	30-SEP-2018	State	-
7293938	7011511	SOX	State Compliance achieved	30-SEP-2018	State	-
7293938	7011512	SOX	State Compliance achieved	30-SEP-2018	State	-
7293938	7011513	SOX	State Compliance achieved	30-SEP-2018	State	-
7293938	7011514	SOX	State Compliance achieved	30-SEP-2018	State	-
7293938	7011515	SOX	State Compliance achieved	30-SEP-2018	State	-
7293938	7011516	SOX	State Compliance achieved	30-SEP-2018	State	-
7293938	7011517	SOX	State Compliance achieved	30-SEP-2018	State	-
7293938	7011518	SOX	State Compliance achieved	30-SEP-2018	State	-
7293938	7011519	SOX	State Compliance achieved	30-SEP-2018	State	-
7293938	7011520	SOX	State Compliance achieved	30-SEP-2018	State	-
7293938	7011521	SOX	State Compliance achieved	30-SEP-2018	State	-
7293938	7011522	SOX	State Compliance achieved	30-SEP-2018	State	-
7293938	7011523	SOX	State Compliance achieved	30-SEP-2018	State	-
7293938	7011524	SOX	State Compliance achieved	30-SEP-2018	State	-
7293938	7011525	SOX	State Compliance achieved	30-SEP-2018	State	-
7293938	7011499	SOX	State Compliance achieved	30-SEP-2018	State	-
7293932	7011472	SOX	State Compliance achieved	13-MAY-2015	State	-
7293932	7011488	SOX	State Compliance achieved	13-MAY-2015	State	-
7293932	7011474	SOX	State Compliance achieved	13-MAY-2015	State	-

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All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
COQUI 1	1567	Yes	Well	Ground water	Emergency	Inactive
MAR NEGRO	3306	Yes	Well	Ground water	Permanent	Inactive
LAS MAREAS	3200	Yes	Well	Ground water	Permanent	Inactive
COQUI 3	3256	Yes	Well	Ground water	Permanent	Active
COQUI 2 (LAS MONJAS)	1568	Yes	Well	Ground water	Permanent	Active
SAN FELIPE WELL	1566	Yes	Well	Ground water	Permanent	Active
TEXIDOR WELL	1565	Yes	Well	Ground water	Permanent	Active
DISTRIBUTION SYSTEM	2538	No	Distribution System/Zone	-	-	Active
SAN FELIPE WELL	1112	No	Treatment Plant	-	-	Active
LAS MAREAS	3201	No	Treatment Plant	-	-	Active
COQUI 3	3257	No	Treatment Plant	-	-	Active
MAR NEGRO	3307	No	Treatment Plant	-	-	Active
TEXIDOR WELL	759	No	Treatment Plant	-	-	Active
COQUI 2 (LAS MONJAS)	779	No	Treatment Plant	-	-	Active

1 - 14 of 14

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
SAN FELIPE WELL	1112	Gaseous Chlorination, Post	Disinfection
TEXIDOR WELL	759	Gaseous Chlorination, Post	Disinfection
COQUI 2 (LAS MONJAS)	779	Gaseous Chlorination, Post	Disinfection

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For more information on a Water System:
Ask the operators of your water system, contact your primacy agency or file a Freedom of Information Act (FOIA) request.
Drinking water in general: Find out more about your drinking water web site or call the Safe Drinking Water Hotline (1-800-426-4791). EPA has also prepared a table about various regulated drinking water contaminants.
Tools for accessing EPA drinking water data: Safe Drinking Water Information System (SDWIS) Federal Reporting Services and Drinking Water Performance and Results Report.
Research Data: As well as monitoring the levels of drinking water contaminants for which EPA has set standards, EPA, states, and water systems also carry out studies of contaminants that may need to be regulated in the future. For more information about these contaminants, please see the National Contaminant Occurrence Database.

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