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MASONTOWN MUNI WATER WORKS

PWS ID: PA5260013 · MASONTOWN, Pennsylvania 15461

MASONTOWN MUNI WATER WORKS serves 3,841 people in MASONTOWN, Pennsylvania using Surface Water water sources. It has 392 recorded EPA violations, including 29 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: MASONTOWN MUNI WATER WORKS

MASONTOWN MUNI WATER WORKS is a local-owned community water system that delivers drinking water to 3,841 residents in MASONTOWN, Pennsylvania (Fayette County) through 1,875 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 392 total violations for this system , of which 29 (7%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 326 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Surface Water Treatment Rule, recorded in 60 violations (MR). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

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. MASONTOWN MUNI WATER WORKS's 392 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
3,841
Total Violations
392
Health-Based Violations
29
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
1,875
County
Fayette
School/Daycare
No
MCL Violations
15
Monitoring Violations
326
Treatment Tech Violations
14

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Surface Water Treatment Rule MR 60 2023
Interim Enhanced Surface Water Treatment Rule MR 47 2011
Chlorine MR 32 2023
Public Notice Other 19 2018
Coliform (TCR) MR 17 2008
Total Haloacetic Acids (HAA5) MCL 15 2020
TTHM MR 13 2024
Total Haloacetic Acids (HAA5) MR 13 2024
Surface Water Treatment Rule TT 12 2003
Nitrate MR 11 2003
CARBON, TOTAL MR 6 2016
Consumer Confidence Rule Other 5 2012
DICHLOROMETHANE MR 4 2002
o-Dichlorobenzene MR 4 2002
trans-1,2-Dichloroethylene MR 4 2002
1,2-Dichloroethane MR 4 2002
Carbon tetrachloride MR 4 2002
1,2-Dichloropropane MR 4 2002
Trichloroethylene MR 4 2002
Tetrachloroethylene MR 4 2002
CHLOROBENZENE MR 4 2002
Benzene MR 4 2002
cis-1,2-Dichloroethylene MR 4 2002
1,2,4-Trichlorobenzene MR 4 2002
p-Dichlorobenzene MR 4 2002
1,1,1-Trichloroethane MR 4 2002
1,1,2-Trichloroethane MR 4 2002
Toluene MR 4 2002
Simazine MR 4 2010
Di(2-ethylhexyl) phthalate MR 4 2010

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 90 samples detected PFAS.

Contaminant Date Result MRL Status
PFHxS 8/18/2025 <0.003 µg/L 0.003 µg/L Not Detected
11Cl-PF3OUdS 8/18/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFHpS 8/18/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 8/18/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 8/18/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFOA 8/18/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 8/18/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 8/18/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 8/18/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 8/18/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFHpA 8/18/2025 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 8/18/2025 <0.02 µg/L 0.02 µg/L Not Detected
9Cl-PF3ONS 8/18/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFBS 8/18/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 8/18/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFEESA 8/18/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 8/18/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 8/18/2025 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 8/18/2025 <0.005 µg/L 0.005 µg/L Not Detected
8:2 FTS 8/18/2025 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 8/18/2025 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 8/18/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 8/18/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 8/18/2025 <0.004 µg/L 0.004 µg/L Not Detected
ADONA 8/18/2025 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 8/18/2025 <0.006 µg/L 0.006 µg/L Not Detected
lithium 8/18/2025 <9 µg/L 9 µg/L Not Detected
PFTA 8/18/2025 <0.008 µg/L 0.008 µg/L Not Detected
NEtFOSAA 8/18/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFTrDA 8/18/2025 <0.007 µg/L 0.007 µg/L Not Detected
NEtFOSAA 5/20/2025 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 5/20/2025 <0.006 µg/L 0.006 µg/L Not Detected
lithium 5/20/2025 <9 µg/L 9 µg/L Not Detected
PFTA 5/20/2025 <0.008 µg/L 0.008 µg/L Not Detected
PFTrDA 5/20/2025 <0.007 µg/L 0.007 µg/L Not Detected
6:2 FTS 5/20/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 5/20/2025 <0.005 µg/L 0.005 µg/L Not Detected
HFPO-DA 5/20/2025 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 5/20/2025 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 5/20/2025 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 5/20/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 5/20/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFBS 5/20/2025 <0.003 µg/L 0.003 µg/L Not Detected
4:2 FTS 5/20/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 5/20/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFOS 5/20/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFHpA 5/20/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 5/20/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 5/20/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 5/20/2025 <0.003 µg/L 0.003 µg/L Not Detected

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 MASONTOWN MUNI WATER WORKS.

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 PA5260013 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 MASONTOWN MUNI WATER WORKS 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
2024 TTHM MR 13 SDWIS / PA5260013 / 2950
2024 Total Haloacetic Acids (HAA5) MR 13 SDWIS / PA5260013 / 2456
2023 Surface Water Treatment Rule MR 60 SDWIS / PA5260013 / 0200
2023 Chlorine MR 32 SDWIS / PA5260013 / 0999
2020 Total Haloacetic Acids (HAA5) MCL 15 SDWIS / PA5260013 / 2456
2018 Public Notice Other 19 SDWIS / PA5260013 / 7500
2016 CARBON, TOTAL MR 6 SDWIS / PA5260013 / 2920
2016 CARBON, TOTAL TT 2 SDWIS / PA5260013 / 2920
2012 Consumer Confidence Rule Other 5 SDWIS / PA5260013 / 7000
2011 Interim Enhanced Surface Water Treatment Rule MR 47 SDWIS / PA5260013 / 0300
2010 Simazine MR 4 SDWIS / PA5260013 / 2037
2010 Di(2-ethylhexyl) phthalate MR 4 SDWIS / PA5260013 / 2039
2010 LASSO MR 4 SDWIS / PA5260013 / 2051
2010 Benzo(a)pyrene MR 4 SDWIS / PA5260013 / 2306
2010 Di(2-ethylhexyl) adipate MR 4 SDWIS / PA5260013 / 2035

How MASONTOWN MUNI WATER WORKS Compares

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

Metric MASONTOWN MUNI WATER WORKS Pennsylvania avg Federal benchmark
Total violations 392 150.6 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 29 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 3,841 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 MASONTOWN MUNI WATER WORKS water safe to drink? ▼
MASONTOWN MUNI WATER WORKS (PWS ID: PA5260013) has 392 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 3,841 people using Surface Water sources.
How many people does MASONTOWN MUNI WATER WORKS serve? ▼
MASONTOWN MUNI WATER WORKS serves 3,841 people in MASONTOWN, Pennsylvania. It is a Local-owned system using Surface Water water sources with 1,875 service connections.
What type of violations does MASONTOWN MUNI WATER WORKS have? ▼
MASONTOWN MUNI WATER WORKS has 392 total violations: 29 health-based violations (MCL exceedances or treatment failures), 326 monitoring/reporting violations, and 14 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in MASONTOWN MUNI WATER WORKS water? ▼
No. MASONTOWN MUNI WATER WORKS was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does MASONTOWN MUNI WATER WORKS use? ▼
MASONTOWN MUNI WATER WORKS 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.

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Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.

Read our methodology — how this data is sourced, computed, and verified.

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