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LIGONIER TWP MUNI AUTH

PWS ID: PA5650080 · LIGONIER, Pennsylvania 15658

LIGONIER TWP MUNI AUTH serves 3,293 people in LIGONIER, Pennsylvania using Surface Water water sources. It has 538 recorded EPA violations, including 15 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: LIGONIER TWP MUNI AUTH

LIGONIER TWP MUNI AUTH is a local-owned community water system that delivers drinking water to 3,293 residents in LIGONIER, Pennsylvania (Westmoreland County) through 1,757 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 538 total violations for this system , of which 15 (3%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 442 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Public Notice, recorded in 72 violations (Other). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Pennsylvania, EPA tracks 7,701 public water systems serving 12,630,061 people, with 1,159,868 cumulative violations and 68,517 health-based violations on record. About 97% of systems in the state carry at least one violation, and state-wide the average per system is 150.6 violations. LIGONIER TWP MUNI AUTH's 538 violations sit above the Pennsylvania average. Statewide, 224 of 389 UCMR5-tested systems have reported PFAS detections (57.6%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
3,293
Total Violations
538
Health-Based Violations
15
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
1,757
County
Westmoreland
School/Daycare
No
MCL Violations
8
Monitoring Violations
442
Treatment Tech Violations
7

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Public Notice Other 72 2025
Surface Water Treatment Rule MR 28 2025
Total Haloacetic Acids (HAA5) MR 15 2021
TTHM MR 15 2021
Nitrate MR 14 2024
cis-1,2-Dichloroethylene MR 12 2024
o-Dichlorobenzene MR 12 2024
p-Dichlorobenzene MR 12 2024
1,2-Dichloroethane MR 12 2024
Carbon tetrachloride MR 12 2024
Trichloroethylene MR 12 2024
Tetrachloroethylene MR 12 2024
CHLOROBENZENE MR 12 2024
Toluene MR 12 2024
Ethylbenzene MR 12 2024
Antimony, Total MR 12 2023
Thallium, Total MR 12 2023
DICHLOROMETHANE MR 12 2024
trans-1,2-Dichloroethylene MR 12 2024
1,1,1-Trichloroethane MR 12 2024
1,2-Dichloropropane MR 12 2024
Benzene MR 12 2024
Styrene MR 12 2024
1,1-Dichloroethylene MR 12 2024
1,1,2-Trichloroethane MR 12 2024
1,2,4-Trichlorobenzene MR 10 2024
Xylenes, Total MR 10 2024
Groundwater Rule MR 10 2025
Arsenic MR 9 2023
Selenium MR 9 2023

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records — or to file a complaint, request a Consumer Confidence Report, or check current monitoring status — go directly to the federal and state regulators that enforce the Safe Drinking Water Act for LIGONIER TWP MUNI AUTH.

Federal Source of Truth

EPA SDWIS — Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID PA5650080 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Pennsylvania Drinking Water Authority

Pennsylvania DEP — Bureau of Safe Drinking Water is the primacy agency that licenses and inspects LIGONIER TWP MUNI AUTH under EPA-delegated authority.

Open PA regulator portal

Source: Pennsylvania DEP — Bureau of Safe Drinking Water

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2025 Public Notice Other 72 SDWIS / PA5650080 / 7500
2025 Surface Water Treatment Rule MR 28 SDWIS / PA5650080 / 0200
2025 Groundwater Rule MR 10 SDWIS / PA5650080 / 0700
2024 Nitrate MR 14 SDWIS / PA5650080 / 1040
2024 cis-1,2-Dichloroethylene MR 12 SDWIS / PA5650080 / 2380
2024 o-Dichlorobenzene MR 12 SDWIS / PA5650080 / 2968
2024 p-Dichlorobenzene MR 12 SDWIS / PA5650080 / 2969
2024 1,2-Dichloroethane MR 12 SDWIS / PA5650080 / 2980
2024 Carbon tetrachloride MR 12 SDWIS / PA5650080 / 2982
2024 Trichloroethylene MR 12 SDWIS / PA5650080 / 2984
2024 Tetrachloroethylene MR 12 SDWIS / PA5650080 / 2987
2024 CHLOROBENZENE MR 12 SDWIS / PA5650080 / 2989
2024 Toluene MR 12 SDWIS / PA5650080 / 2991
2024 Ethylbenzene MR 12 SDWIS / PA5650080 / 2992
2024 DICHLOROMETHANE MR 12 SDWIS / PA5650080 / 2964

How LIGONIER TWP MUNI AUTH Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric LIGONIER TWP MUNI AUTH Pennsylvania avg Federal benchmark
Total violations 538 150.6 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 15 8.9 Indicates a contaminant exceeded a federal MCL
PFAS detection None 57.6% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 3,293 1,640 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 7,701 regulated public water systems in Pennsylvania.

Federal MCL reference — Safe Drinking Water Act thresholds
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is LIGONIER TWP MUNI AUTH water safe to drink?
LIGONIER TWP MUNI AUTH (PWS ID: PA5650080) has 538 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 3,293 people using Surface Water sources.
How many people does LIGONIER TWP MUNI AUTH serve?
LIGONIER TWP MUNI AUTH serves 3,293 people in LIGONIER, Pennsylvania. It is a Local-owned system using Surface Water water sources with 1,757 service connections.
What type of violations does LIGONIER TWP MUNI AUTH have?
LIGONIER TWP MUNI AUTH has 538 total violations: 15 health-based violations (MCL exceedances or treatment failures), 442 monitoring/reporting violations, and 7 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in LIGONIER TWP MUNI AUTH water?
No PFAS testing data is available for LIGONIER TWP MUNI AUTH under the EPA's UCMR5 monitoring program.
What water source does LIGONIER TWP MUNI AUTH use?
LIGONIER TWP MUNI AUTH uses Surface Water as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from?
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

Explore PlainWater

Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Related

Data sourced from $official public datasets. See our methodology for details. Retrieved and formatted by Kiznis Studio Editorial