Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	PR0003772
PWS Name	LAGO GUAJATACA
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water
Primacy Type	Territory
Is Wholesaler?	No
Population Served	11187
County Served	Isabela Municipio, San Sebastian 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 of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	7620010	Returned to Compliance	01-SEP-2024	30-SEP-2024	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	7620006	Returned to Compliance	01-SEP-2022	30-SEP-2022	No
TT	Monthly Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	7620005	Returned to Compliance	01-MAR-2022	31-MAR-2022	Yes
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	7620002	Returned to Compliance	01-JUL-2020	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7620003	Returned to Compliance	01-JAN-2020	31-MAR-2020	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	7620004	Returned to Compliance	01-JAN-2020	31-MAR-2020	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7619999	Returned to Compliance	01-OCT-2019	31-DEC-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	7619998	Returned to Compliance	01-OCT-2019	31-DEC-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7619997	Returned to Compliance	01-JUL-2019	30-SEP-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	7619996	Returned to Compliance	01-JUL-2019	30-SEP-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7619988	Returned to Compliance	01-APR-2019	30-JUN-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	7619989	Returned to Compliance	01-APR-2019	30-JUN-2019	Yes
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	E. COLI	7619995	Returned to Compliance	01-APR-2019	30-APR-2019	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	Cryptosporidium	7619994	Returned to Compliance	01-APR-2019	30-APR-2019	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	Turbidity	7619993	Returned to Compliance	01-APR-2019	30-APR-2019	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	7620001	Known	01-FEB-2019	28-FEB-2019	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7619987	Returned to Compliance	01-JAN-2019	31-MAR-2019	Yes
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	7620000	Known	01-JAN-2019	31-JAN-2019	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7619977	Returned to Compliance	01-OCT-2018	31-DEC-2018	Yes
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	7619990	Returned to Compliance	01-OCT-2018	-	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	7619992	Known	01-MAY-2018	31-MAY-2018	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7619954	Returned to Compliance	01-APR-2018	30-JUN-2018	Yes
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	7619991	Known	01-APR-2018	30-APR-2018	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	Cryptosporidium	7619966	Returned to Compliance	01-APR-2018	30-APR-2018	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	E. COLI	7619967	Returned to Compliance	01-APR-2018	30-APR-2018	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	Turbidity	7619965	Returned to Compliance	01-APR-2018	30-APR-2018	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	Turbidity	7619962	Returned to Compliance	01-MAR-2018	31-MAR-2018	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	E. COLI	7619964	Returned to Compliance	01-MAR-2018	31-MAR-2018	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	Cryptosporidium	7619963	Returned to Compliance	01-MAR-2018	31-MAR-2018	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	Turbidity	7619959	Returned to Compliance	01-FEB-2018	28-FEB-2018	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	Cryptosporidium	7619960	Returned to Compliance	01-FEB-2018	28-FEB-2018	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	E. COLI	7619961	Returned to Compliance	01-FEB-2018	28-FEB-2018	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	Turbidity	7619956	Returned to Compliance	01-JAN-2018	31-JAN-2018	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	E. COLI	7619958	Returned to Compliance	01-JAN-2018	31-JAN-2018	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	Cryptosporidium	7619957	Returned to Compliance	01-JAN-2018	31-JAN-2018	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7619955	Returned to Compliance	01-JAN-2018	31-MAR-2018	Yes
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	E. COLI	7619986	Returned to Compliance	01-AUG-2017	31-AUG-2017	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	Cryptosporidium	7619985	Returned to Compliance	01-AUG-2017	31-AUG-2017	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	Turbidity	7619984	Returned to Compliance	01-AUG-2017	31-AUG-2017	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	E. COLI	7619983	Returned to Compliance	01-JUL-2017	31-JUL-2017	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	Turbidity	7619981	Returned to Compliance	01-JUL-2017	31-JUL-2017	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	Cryptosporidium	7619982	Returned to Compliance	01-JUL-2017	31-JUL-2017	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	Turbidity	7619978	Returned to Compliance	01-MAY-2017	31-MAY-2017	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	Cryptosporidium	7619979	Returned to Compliance	01-MAY-2017	31-MAY-2017	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	E. COLI	7619980	Returned to Compliance	01-MAY-2017	31-MAY-2017	No
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	7619952	Returned to Compliance	01-APR-2017	30-JUN-2017	Yes
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	E. COLI	7619976	Returned to Compliance	01-APR-2017	30-APR-2017	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	Cryptosporidium	7619975	Returned to Compliance	01-APR-2017	30-APR-2017	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	Turbidity	7619974	Returned to Compliance	01-APR-2017	30-APR-2017	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	Turbidity	7619971	Returned to Compliance	01-FEB-2017	28-FEB-2017	No

1 - 50 of 215

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
8031386	7620010	SFJ	State Formal Notice of Violation issued	06-NOV-2024	State	-
8031383	7620006	SFJ	State Formal Notice of Violation issued	01-DEC-2022	State	-
8031381	7620005	SFJ	State Formal Notice of Violation issued	18-MAY-2022	State	-
8031380	7620002	SOX	State Compliance achieved	31-JUL-2020	State	-
8031375	7619954	SOX	State Compliance achieved	30-JUN-2020	State	-
8031375	7619996	SOX	State Compliance achieved	30-JUN-2020	State	-
8031375	7619997	SOX	State Compliance achieved	30-JUN-2020	State	-
8031375	7619998	SOX	State Compliance achieved	30-JUN-2020	State	-
8031377	7620004	SOX	State Compliance achieved	30-JUN-2020	State	-
8031377	7620003	SOX	State Compliance achieved	30-JUN-2020	State	-
8031375	7619999	SOX	State Compliance achieved	30-JUN-2020	State	-
8031375	7619955	SOX	State Compliance achieved	30-JUN-2020	State	-
8031375	7619977	SOX	State Compliance achieved	30-JUN-2020	State	-
8031375	7619987	SOX	State Compliance achieved	30-JUN-2020	State	-
8031375	7619989	SOX	State Compliance achieved	30-JUN-2020	State	-
8031375	7619988	SOX	State Compliance achieved	30-JUN-2020	State	-
8031370	7619939	SOX	State Compliance achieved	18-OCT-2019	State	-
8031370	7619938	SOX	State Compliance achieved	18-OCT-2019	State	-
8031370	7619936	SOX	State Compliance achieved	18-OCT-2019	State	-
8031370	7619932	SOX	State Compliance achieved	18-OCT-2019	State	-
8031370	7619931	SOX	State Compliance achieved	18-OCT-2019	State	-
8031370	7619930	SOX	State Compliance achieved	18-OCT-2019	State	-
8031370	7619929	SOX	State Compliance achieved	18-OCT-2019	State	-
8031370	7619925	SOX	State Compliance achieved	18-OCT-2019	State	-
8031370	7619924	SOX	State Compliance achieved	18-OCT-2019	State	-
8031370	7619935	SOX	State Compliance achieved	18-OCT-2019	State	-
8031362	7619990	SOX	State Compliance achieved	13-AUG-2019	State	-
8031365	7619995	SFJ	State Formal Notice of Violation issued	27-JUN-2019	State	-
8031365	7619994	SFJ	State Formal Notice of Violation issued	27-JUN-2019	State	-
8031365	7619993	SFJ	State Formal Notice of Violation issued	27-JUN-2019	State	-
8031359	7619947	SOX	State Compliance achieved	10-MAY-2019	State	-
8031359	7619946	SOX	State Compliance achieved	10-MAY-2019	State	-
8031371	7619949	SOX	State Compliance achieved	30-NOV-2018	State	-
8031371	7619950	SOX	State Compliance achieved	30-NOV-2018	State	-
8031371	7619951	SOX	State Compliance achieved	30-NOV-2018	State	-
8031371	7619956	SOX	State Compliance achieved	30-NOV-2018	State	-
8031371	7619957	SOX	State Compliance achieved	30-NOV-2018	State	-
8031371	7619958	SOX	State Compliance achieved	30-NOV-2018	State	-
8031371	7619959	SOX	State Compliance achieved	30-NOV-2018	State	-
8031371	7619960	SOX	State Compliance achieved	30-NOV-2018	State	-
8031371	7619961	SOX	State Compliance achieved	30-NOV-2018	State	-
8031371	7619962	SOX	State Compliance achieved	30-NOV-2018	State	-
8031371	7619963	SOX	State Compliance achieved	30-NOV-2018	State	-
8031371	7619964	SOX	State Compliance achieved	30-NOV-2018	State	-
8031371	7619965	SOX	State Compliance achieved	30-NOV-2018	State	-
8031371	7619966	SOX	State Compliance achieved	30-NOV-2018	State	-
8031371	7619967	SOX	State Compliance achieved	30-NOV-2018	State	-
8031371	7619968	SOX	State Compliance achieved	30-NOV-2018	State	-
8031371	7619969	SOX	State Compliance achieved	30-NOV-2018	State	-
8031371	7619970	SOX	State Compliance achieved	30-NOV-2018	State	-

1 - 50 of 98

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
MAIN CHANNEL	1949	Yes	Intake	Surface water	Permanent	Active
GUAJATACA LAKE	3533	Yes	Intake	Surface water	Permanent	Active
DISTRIBUTION SYSTEM	2437	No	Distribution System/Zone	-	-	Active
MAIN CHANNEL	292	No	Treatment Plant	-	-	Active
PTA. GUAJATACA	72	No	Treatment Plant	-	-	Active

1 - 5 of 5

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
MAIN CHANNEL	292	Gaseous Chlorination, Post	Disinfection
PTA. GUAJATACA	72	Filtration, Rapid Sand	Particulate removal

1 - 2 of 2

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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