Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	PA5650080
PWS Name	LIGONIER TWP MUNI AUTH
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	No
Population Served	3293
County Served	Westmoreland

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	2528848	Returned to Compliance	01-AUG-2025	31-AUG-2025	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Ground Water Rule	Groundwater Rule	2528847	Returned to Compliance	01-AUG-2025	31-AUG-2025	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2513142	Returned to Compliance	11-JAN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2513143	Returned to Compliance	11-JAN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2513131	Returned to Compliance	11-JAN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2513136	Returned to Compliance	11-JAN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2513149	Returned to Compliance	11-JAN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2513151	Returned to Compliance	11-JAN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2513156	Returned to Compliance	11-JAN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2513147	Returned to Compliance	11-JAN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2513134	Returned to Compliance	11-JAN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2513133	Returned to Compliance	11-JAN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2513128	Returned to Compliance	11-JAN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2513138	Returned to Compliance	11-JAN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2513127	Returned to Compliance	11-JAN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2513144	Returned to Compliance	11-JAN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2513152	Returned to Compliance	11-JAN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2513154	Returned to Compliance	11-JAN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2513157	Returned to Compliance	11-JAN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2513140	Returned to Compliance	11-JAN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2513150	Returned to Compliance	11-JAN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2513139	Returned to Compliance	11-JAN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2513129	Returned to Compliance	11-JAN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2513146	Returned to Compliance	11-JAN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2513160	Returned to Compliance	11-JAN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2513141	Returned to Compliance	11-JAN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2513155	Returned to Compliance	11-JAN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2513159	Returned to Compliance	11-JAN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2513130	Returned to Compliance	11-JAN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2513153	Returned to Compliance	11-JAN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2513132	Returned to Compliance	11-JAN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2513158	Returned to Compliance	11-JAN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2513137	Returned to Compliance	11-JAN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2513145	Returned to Compliance	11-JAN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2513135	Returned to Compliance	11-JAN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2513148	Returned to Compliance	11-JAN-2025	-	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	2511634	Returned to Compliance	01-JAN-2025	31-JAN-2025	No
MR	Failure Submit Filter Profile/CPE Report	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	2432663	Returned to Compliance	01-SEP-2024	30-SEP-2024	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2412630	Returned to Compliance	11-JAN-2024	-	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	2507966	Returned to Compliance	01-JAN-2024	31-DEC-2024	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	2507965	Returned to Compliance	01-JAN-2024	31-DEC-2024	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	2507964	Returned to Compliance	01-JAN-2024	31-DEC-2024	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	2507963	Returned to Compliance	01-JAN-2024	31-DEC-2024	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	2507962	Returned to Compliance	01-JAN-2024	31-DEC-2024	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	2507961	Returned to Compliance	01-JAN-2024	31-DEC-2024	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	2507960	Returned to Compliance	01-JAN-2024	31-DEC-2024	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	2507959	Returned to Compliance	01-JAN-2024	31-DEC-2024	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	2507958	Returned to Compliance	01-JAN-2024	31-DEC-2024	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	2507957	Returned to Compliance	01-JAN-2024	31-DEC-2024	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	2507956	Returned to Compliance	01-JAN-2024	31-DEC-2024	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
260779687014	2407796	SOX	State Compliance achieved	25-FEB-2026	State	-
260779687014	2407797	SOX	State Compliance achieved	25-FEB-2026	State	-
26116343023	2528848	SOX	State Compliance achieved	25-FEB-2026	State	-
26116343023	2528847	SOX	State Compliance achieved	25-FEB-2026	State	-
26116343023	2511634	SOX	State Compliance achieved	25-FEB-2026	State	-
263266387040	2432663	SOX	State Compliance achieved	02-DEC-2025	State	-
250778487002	2407816	SOX	State Compliance achieved	23-JUN-2025	State	-
250778487002	2407817	SOX	State Compliance achieved	23-JUN-2025	State	-
250778487002	2412630	SOX	State Compliance achieved	23-JUN-2025	State	-
25079473001	2507947	SOX	State Compliance achieved	23-JUN-2025	State	-
25079473001	2507948	SOX	State Compliance achieved	23-JUN-2025	State	-
25079473001	2507949	SOX	State Compliance achieved	23-JUN-2025	State	-
25079473001	2507950	SOX	State Compliance achieved	23-JUN-2025	State	-
25079473001	2507951	SOX	State Compliance achieved	23-JUN-2025	State	-
25079473001	2507952	SOX	State Compliance achieved	23-JUN-2025	State	-
25079473001	2507953	SOX	State Compliance achieved	23-JUN-2025	State	-
25079473001	2507954	SOX	State Compliance achieved	23-JUN-2025	State	-
25079473001	2507955	SOX	State Compliance achieved	23-JUN-2025	State	-
25079473001	2507956	SOX	State Compliance achieved	23-JUN-2025	State	-
25079473001	2507957	SOX	State Compliance achieved	23-JUN-2025	State	-
25079473001	2507958	SOX	State Compliance achieved	23-JUN-2025	State	-
25079473001	2507959	SOX	State Compliance achieved	23-JUN-2025	State	-
25079473001	2507960	SOX	State Compliance achieved	23-JUN-2025	State	-
25079473001	2507961	SOX	State Compliance achieved	23-JUN-2025	State	-
25079473001	2507962	SOX	State Compliance achieved	23-JUN-2025	State	-
25079473001	2507963	SOX	State Compliance achieved	23-JUN-2025	State	-
25079473001	2507964	SOX	State Compliance achieved	23-JUN-2025	State	-
25079473001	2507965	SOX	State Compliance achieved	23-JUN-2025	State	-
25079473001	2507966	SOX	State Compliance achieved	23-JUN-2025	State	-
25079473001	2507967	SOX	State Compliance achieved	23-JUN-2025	State	-
25079473001	2507968	SOX	State Compliance achieved	23-JUN-2025	State	-
250778487002	2407784	SOX	State Compliance achieved	23-JUN-2025	State	-
250778487002	2407785	SOX	State Compliance achieved	23-JUN-2025	State	-
250778487002	2407786	SOX	State Compliance achieved	23-JUN-2025	State	-
250778487002	2407787	SOX	State Compliance achieved	23-JUN-2025	State	-
250778487002	2407788	SOX	State Compliance achieved	23-JUN-2025	State	-
250778487002	2407789	SOX	State Compliance achieved	23-JUN-2025	State	-
250778487002	2407790	SOX	State Compliance achieved	23-JUN-2025	State	-
250778487002	2407791	SOX	State Compliance achieved	23-JUN-2025	State	-
250778487002	2407792	SOX	State Compliance achieved	23-JUN-2025	State	-
250778487002	2407793	SOX	State Compliance achieved	23-JUN-2025	State	-
250778487002	2407794	SOX	State Compliance achieved	23-JUN-2025	State	-
250778487002	2407795	SOX	State Compliance achieved	23-JUN-2025	State	-
250778487002	2407798	SOX	State Compliance achieved	23-JUN-2025	State	-
250778487002	2407799	SOX	State Compliance achieved	23-JUN-2025	State	-
250778487002	2407800	SOX	State Compliance achieved	23-JUN-2025	State	-
250778487002	2407801	SOX	State Compliance achieved	23-JUN-2025	State	-
250778487002	2407802	SOX	State Compliance achieved	23-JUN-2025	State	-
250778487002	2407803	SOX	State Compliance achieved	23-JUN-2025	State	-
250778487002	2407804	SOX	State Compliance achieved	23-JUN-2025	State	-

1 - 50 of 209

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
SOUTH BR MILL CREEK	001	Yes	Intake	Surface water	Permanent	Active
WELL #1	002	Yes	Well	Ground water	Permanent	Active
WATERFORD WELL 1	003	Yes	Well	Ground water	Other	Inactive
TANK EFF HALF MG	101	No	Sampling Station	-	-	Active
WATERFORD EP	102	No	Sampling Station	-	-	Inactive
SS FILTER PLANT	300	No	Treatment Plant	-	-	Active
WATERFORD WTP	301	No	Treatment Plant	-	-	Inactive

1 - 7 of 7

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
SS FILTER PLANT	300	Filtration, Slow Sand	Particulate removal
SS FILTER PLANT	300	Gaseous Chlorination, Post	Disinfection
SS FILTER PLANT	300	Inhibitor, Polyphosphate	Corrosion control

1 - 3 of 3

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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