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Community Water System · PWS PA6250064

Union City Municipal Authority

Union City, Pennsylvania 16438 - drinking water served from surface water sources to 2,952 people, tracked in EPA SDWIS and UCMR5.

2,952
People served
629
EPA violations
164
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 629 drinking-water violations at Union City Municipal Authority, 26% of them health-based - above the Pennsylvania per-system average.

629
Total EPA violations on record
26%
Health-based (MCL / treatment failure)
2,952
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Union City Municipal Authority

Union City Municipal Authority is a local-owned community water system that delivers drinking water to 2,952 residents in Union City, Pennsylvania (Erie County) through 1,131 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 629 total violations for this system , of which 164 (26%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 359 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 93 violations (Other). 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. Statewide, 224 of 389 UCMR5-tested systems have reported PFAS detections (57.6%).

Union City Municipal Authority's 629 violations sit above the Pennsylvania average.

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
2,952
Total Violations
629
Health-Based Violations
164
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
1,131
County
Erie
School/Daycare
No
MCL Violations
136
Monitoring Violations
359
Treatment Tech Violations
28

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Public Notice Other 93 2025
Total Haloacetic Acids (HAA5) MCL 84 2025
TTHM MCL 48 2009
CARBON, TOTAL MR 46 2024
Surface Water Treatment Rule MR 30 2019
CARBON, TOTAL TT 20 2004
Total Haloacetic Acids (HAA5) MR 17 2017
Chlorine MR 13 2019
TTHM MR 10 2014
1,1-Dichloroethylene MR 10 2016
1,2-Dichloroethane MR 10 2016
1,1,1-Trichloroethane MR 10 2016
Benzene MR 10 2016
p-Dichlorobenzene MR 10 2016
Carbon tetrachloride MR 10 2016
Trichloroethylene MR 10 2016
Consumer Confidence Rule Other 9 2007
Styrene MR 9 2016
Surface Water Treatment Rule TT 8 2004
2,4-D MR 8 2023
o-Dichlorobenzene MR 8 2016
CHLOROBENZENE MR 8 2016
cis-1,2-Dichloroethylene MR 8 2016
DICHLOROMETHANE MR 8 2016
trans-1,2-Dichloroethylene MR 8 2016
Tetrachloroethylene MR 8 2016
Toluene MR 8 2016
Ethylbenzene MR 8 2016
1,2-Dichloropropane MR 8 2016
1,1,2-Trichloroethane MR 8 2016

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 116 samples detected PFAS.

Contaminant Date Result MRL Status
PFTA 8/22/2023 <8.00 ppt 8.00 ppt Not Detected
NEtFOSAA 8/22/2023 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 8/22/2023 <6.00 ppt 6.00 ppt Not Detected
PFDoA 8/22/2023 <3.00 ppt 3.00 ppt Not Detected
PFTrDA 8/22/2023 <7.00 ppt 7.00 ppt Not Detected
11Cl-PF3OUdS 8/22/2023 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 8/22/2023 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 8/22/2023 <5.00 ppt 5.00 ppt Not Detected
PFBA 8/22/2023 <5.00 ppt 5.00 ppt Not Detected
HFPO-DA 8/22/2023 <5.00 ppt 5.00 ppt Not Detected
ADONA 8/22/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpS 8/22/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeS 8/22/2023 <4.00 ppt 4.00 ppt Not Detected
NFDHA 8/22/2023 <20.00 ppt 20.00 ppt Not Detected
PFEESA 8/22/2023 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 8/22/2023 <2.00 ppt 2.00 ppt Not Detected
PFMBA 8/22/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeA 8/22/2023 <3.00 ppt 3.00 ppt Not Detected
PFOA 8/22/2023 <4.00 ppt 4.00 ppt Not Detected
8:2 FTS 8/22/2023 <5.00 ppt 5.00 ppt Not Detected
PFUnA 8/22/2023 <2.00 ppt 2.00 ppt Not Detected
PFHxA 8/22/2023 <3.00 ppt 3.00 ppt Not Detected
PFDA 8/22/2023 <3.00 ppt 3.00 ppt Not Detected
PFOS 8/22/2023 <4.00 ppt 4.00 ppt Not Detected
PFNA 8/22/2023 <4.00 ppt 4.00 ppt Not Detected
PFHxS 8/22/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpA 8/22/2023 <3.00 ppt 3.00 ppt Not Detected
PFBS 8/22/2023 <3.00 ppt 3.00 ppt Not Detected
PFMPA 8/22/2023 <4.00 ppt 4.00 ppt Not Detected
ADONA 5/16/2023 <3.00 ppt 3.00 ppt Not Detected
PFEESA 5/16/2023 <3.00 ppt 3.00 ppt Not Detected
NFDHA 5/16/2023 <20.00 ppt 20.00 ppt Not Detected
PFPeS 5/16/2023 <4.00 ppt 4.00 ppt Not Detected
PFMBA 5/16/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpS 5/16/2023 <3.00 ppt 3.00 ppt Not Detected
4:2 FTS 5/16/2023 <3.00 ppt 3.00 ppt Not Detected
NMeFOSAA 5/16/2023 <6.00 ppt 6.00 ppt Not Detected
PFPeA 5/16/2023 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 5/16/2023 <2.00 ppt 2.00 ppt Not Detected
HFPO-DA 5/16/2023 <5.00 ppt 5.00 ppt Not Detected
PFBA 5/16/2023 <5.00 ppt 5.00 ppt Not Detected
11Cl-PF3OUdS 5/16/2023 <5.00 ppt 5.00 ppt Not Detected
PFBS 5/16/2023 <3.00 ppt 3.00 ppt Not Detected
PFOS 5/16/2023 <4.00 ppt 4.00 ppt Not Detected
PFNA 5/16/2023 <4.00 ppt 4.00 ppt Not Detected
PFDA 5/16/2023 <3.00 ppt 3.00 ppt Not Detected
NEtFOSAA 5/16/2023 <5.00 ppt 5.00 ppt Not Detected
PFDoA 5/16/2023 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 5/16/2023 <5.00 ppt 5.00 ppt Not Detected
PFOA 5/16/2023 <4.00 ppt 4.00 ppt 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 Union City Municipal Authority.

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 PA6250064 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 Union City Municipal Authority 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 93 SDWIS / PA6250064 / 7500
2025 Total Haloacetic Acids (HAA5) MCL 84 SDWIS / PA6250064 / 2456
2024 CARBON, TOTAL MR 46 SDWIS / PA6250064 / 2920
2023 2,4-D MR 8 SDWIS / PA6250064 / 2105
2023 Dalapon MR 6 SDWIS / PA6250064 / 2031
2019 Surface Water Treatment Rule MR 30 SDWIS / PA6250064 / 0200
2019 Chlorine MR 13 SDWIS / PA6250064 / 0999
2017 Total Haloacetic Acids (HAA5) MR 17 SDWIS / PA6250064 / 2456
2017 Picloram MR 6 SDWIS / PA6250064 / 2040
2017 Pentachlorophenol MR 6 SDWIS / PA6250064 / 2326
2017 Endothall MR 4 SDWIS / PA6250064 / 2033
2017 Dinoseb MR 4 SDWIS / PA6250064 / 2041
2017 2,3,7,8-TCDD MR 4 SDWIS / PA6250064 / 2063
2017 2,4,5-TP MR 4 SDWIS / PA6250064 / 2110
2016 1,1-Dichloroethylene MR 10 SDWIS / PA6250064 / 2977

How Union City Municipal Authority Compares

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

Metric Union City Municipal Authority Pennsylvania avg Federal benchmark
Total violations 629 150.6 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 164 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 2,952 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 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Union City Municipal Authority water safe to drink? ▼
Union City Municipal Authority (PWS ID: PA6250064) has 629 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 2,952 people using Surface Water sources.
How many people does Union City Municipal Authority serve? ▼
Union City Municipal Authority serves 2,952 people in Union City, Pennsylvania. It is a Local-owned system using Surface Water water sources with 1,131 service connections.
What type of violations does Union City Municipal Authority have? ▼
Union City Municipal Authority has 629 total violations: 164 health-based violations (MCL exceedances or treatment failures), 359 monitoring/reporting violations, and 28 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Union City Municipal Authority water? ▼
No. Union City Municipal Authority was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Union City Municipal Authority use? ▼
Union City Municipal Authority 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.
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.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.