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DUQUESNE WATER DEPT

PWS ID: PA5020012 · DUQUESNE, Pennsylvania 15110

DUQUESNE WATER DEPT serves 5,565 people in DUQUESNE, Pennsylvania using Surface Water water sources. It has 136 recorded EPA violations, including 31 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: DUQUESNE WATER DEPT

DUQUESNE WATER DEPT is a local-owned community water system that delivers drinking water to 5,565 residents in DUQUESNE, Pennsylvania (Allegheny County) through 2,110 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 136 total violations for this system , of which 31 (23%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 71 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 TTHM, recorded in 23 violations (MCL, health-based). 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. DUQUESNE WATER DEPT's 136 violations sit below 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
5,565
Total Violations
136
Health-Based Violations
31
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
2,110
County
Allegheny
School/Daycare
No
MCL Violations
31
Monitoring Violations
71
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
TTHM MCL 23 2024
Surface Water Treatment Rule MR 16 2023
Chlorine MR 12 2023
Public Notice Other 11 2022
Consumer Confidence Rule Other 10 2022
Coliform (TCR) MCL 8 2012
Revised Total Coliform Rule RPT 8 2019
Revised Total Coliform Rule MON 7 2023
TTHM MR 4 2016
Asbestos MR 4 2022
Lead and Copper Rule MR 4 2018
Coliform (TCR) MR 3 2015
2,4-D MR 2 1985
Endrin MR 2 1985
Methoxychlor MR 2 1985
2,4,5-TP MR 2 1985
Toxaphene MR 2 1985
BHC-GAMMA MR 2 1985
Gross Alpha, Excl. Radon and U MR 1 1980
Mercury MR 1 1982
Selenium MR 1 1982
Cadmium MR 1 1982
Chromium MR 1 1982
Arsenic MR 1 1982
Barium MR 1 1982
Fluoride MR 1 1982
Nitrate MR 1 1982

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 120 samples detected PFAS.

Contaminant Date Result MRL Status
PFTA 8/21/2023 <0.008 µg/L 0.008 µg/L Not Detected
lithium 8/21/2023 <9 µg/L 9 µg/L Not Detected
NMeFOSAA 8/21/2023 <0.006 µg/L 0.006 µg/L Not Detected
PFTrDA 8/21/2023 <0.007 µg/L 0.007 µg/L Not Detected
NEtFOSAA 8/21/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFHxA 5/22/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFTrDA 5/22/2023 <0.007 µg/L 0.007 µg/L Not Detected
PFOA 5/22/2023 <0.004 µg/L 0.004 µg/L Not Detected
NMeFOSAA 5/22/2023 <0.006 µg/L 0.006 µg/L Not Detected
PFTA 5/22/2023 <0.008 µg/L 0.008 µg/L Not Detected
lithium 5/22/2023 <9 µg/L 9 µg/L Not Detected
NEtFOSAA 5/22/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFHpS 5/22/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 5/22/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 5/22/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 5/22/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 5/22/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 5/22/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFMPA 5/22/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFPeS 5/22/2023 <0.004 µg/L 0.004 µg/L Not Detected
NFDHA 5/22/2023 <0.02 µg/L 0.02 µg/L Not Detected
PFEESA 5/22/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 5/22/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 5/22/2023 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 5/22/2023 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 5/22/2023 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 5/22/2023 <0.005 µg/L 0.005 µg/L Not Detected
HFPO-DA 5/22/2023 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 5/22/2023 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 5/22/2023 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 5/22/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 5/22/2023 <0.002 µg/L 0.002 µg/L Not Detected
PFDoA 5/22/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFBA 5/22/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFMBA 5/22/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 3/12/2024 <0.004 µg/L 0.004 µg/L Not Detected
6:2 FTS 3/12/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBS 3/12/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 3/12/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 3/12/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOS 3/12/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 3/12/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 3/12/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 3/12/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 3/12/2024 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 3/12/2024 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 3/12/2024 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 3/12/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 3/12/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFBA 3/12/2024 <0.005 µg/L 0.005 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 DUQUESNE WATER DEPT.

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 PA5020012 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 DUQUESNE WATER DEPT 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 MCL 23 SDWIS / PA5020012 / 2950
2023 Surface Water Treatment Rule MR 16 SDWIS / PA5020012 / 0200
2023 Chlorine MR 12 SDWIS / PA5020012 / 0999
2023 Revised Total Coliform Rule MON 7 SDWIS / PA5020012 / 8000
2022 Public Notice Other 11 SDWIS / PA5020012 / 7500
2022 Consumer Confidence Rule Other 10 SDWIS / PA5020012 / 7000
2022 Asbestos MR 4 SDWIS / PA5020012 / 1094
2019 Revised Total Coliform Rule RPT 8 SDWIS / PA5020012 / 8000
2018 Lead and Copper Rule MR 4 SDWIS / PA5020012 / 5000
2016 TTHM MR 4 SDWIS / PA5020012 / 2950
2015 Coliform (TCR) MR 3 SDWIS / PA5020012 / 3100
2012 Coliform (TCR) MCL 8 SDWIS / PA5020012 / 3100
1985 2,4-D MR 2 SDWIS / PA5020012 / 2105
1985 Endrin MR 2 SDWIS / PA5020012 / 2005
1985 Methoxychlor MR 2 SDWIS / PA5020012 / 2015

How DUQUESNE WATER DEPT Compares

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

Metric DUQUESNE WATER DEPT Pennsylvania avg Federal benchmark
Total violations 136 150.6 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 31 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 5,565 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 DUQUESNE WATER DEPT water safe to drink? ▼
DUQUESNE WATER DEPT (PWS ID: PA5020012) has 136 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 5,565 people using Surface Water sources.
How many people does DUQUESNE WATER DEPT serve? ▼
DUQUESNE WATER DEPT serves 5,565 people in DUQUESNE, Pennsylvania. It is a Local-owned system using Surface Water water sources with 2,110 service connections.
What type of violations does DUQUESNE WATER DEPT have? ▼
DUQUESNE WATER DEPT has 136 total violations: 31 health-based violations (MCL exceedances or treatment failures), 71 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in DUQUESNE WATER DEPT water? ▼
No. DUQUESNE WATER DEPT was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does DUQUESNE WATER DEPT use? ▼
DUQUESNE WATER DEPT 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