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Duquesne, PA Tap Water Quality 2026

Water quality report for Duquesne, PA — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Duquesne's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Duquesne Water Dept PWSID: PA5020012 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead was not detected and no violations are open. No PFAS was detected.

C

Duquesne earns a C for water quality

Graded on violations, lead, and PFAS, with state inspection findings.

Lead: not detected
PFAS tested, none detected
35 violations since 2015, 7 health-based
No violations currently open
Duquesne's lead level vs. all Pennsylvania community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: Not detected — 0% of the federal action level
✓ Lower lead than % of Pennsylvania utilities
Population Served
5092
~2110 connections
Water Source
Surface water
Purchased from another system — SDWIS source code SWP
Active Violations
0
35 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
0% of EPA action level
Not detected
Action level: 15 ppb
Lead was not detected at the 90th percentile — the result fell below the laboratory detection limit. That is not the same as an absence of lead in every tap, and older homes with lead service lines can still show higher readings.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Consumer Confidence Rule OTHER — — 2025 Resolved
TTHM MCL EXCEEDANCE 0.081 MG/L 0.080 mg/L 2024 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2023 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2023 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2023 Resolved
Consumer Confidence Rule OTHER — — 2022 Resolved
Public Notice OTHER — — 2022 Resolved
TTHM MCL EXCEEDANCE 0.081 MG/L 0.080 mg/L 2022 Resolved
Asbestos MONITORING AND REPORTING — 7 MFL 2022 Resolved
Consumer Confidence Rule OTHER — — 2021 Resolved
Consumer Confidence Rule OTHER — — 2021 Resolved
TTHM MCL EXCEEDANCE 0.083 MG/L 0.080 mg/L 2021 Resolved
Public Notice OTHER — — 2019 Resolved
Revised Total Coliform Rule REPORTING FAILURE — — 2019 Resolved
Revised Total Coliform Rule REPORTING FAILURE — — 2019 Resolved
Consumer Confidence Rule OTHER — — 2019 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2019 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2019 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2019 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2018 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2018 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2018 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2018 Resolved
Public Notice OTHER — — 2018 Unaddressed
TTHM MCL EXCEEDANCE — 0.080 mg/L 2017 Resolved
Consumer Confidence Rule OTHER — — 2017 Resolved
TTHM MCL EXCEEDANCE — 0.080 mg/L 2017 Resolved
Public Notice OTHER — — 2017 Resolved
Public Notice OTHER — — 2016 Resolved
TTHM MCL EXCEEDANCE — 0.080 mg/L 2016 Resolved
TTHM MCL EXCEEDANCE — 0.080 mg/L 2016 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2016 Resolved
Coliform (TCR) MONITORING AND REPORTING — 5% of samples 2015 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2015 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2015 Resolved
Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

35 violations are on record since 2015, of which 7 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Duquesne Water Dept
PWSID PA5020012
Water source Surface water — Purchased from another system — SDWIS source code SWP
Population served 5,092
Service connections 2,110
Systems serving this area 2
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Duquesne tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open.
Does Duquesne water have PFAS? ▼
It was tested for the six regulated PFAS compounds and none were detected.
Who supplies water to Duquesne? ▼
Duquesne Water Dept (PWSID PA5020012), one of 2 systems serving this area. Surface water. Purchased from another system — SDWIS source code SWP
When was this system last inspected? ▼
It was last inspected on 2026-04-30. Inspectors recorded 1 significant deficiency.

What Should Duquesne Residents Do?

1
Read your annual water report
Your supplier publishes a Consumer Confidence Report each July covering the prior year.
2
Check for a lead service line
Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.
3
Flush before drinking
If water has sat in pipes more than six hours, run the cold tap for two minutes before drinking or cooking.

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