PITTSBURGH WATER & SEWER AUTH
PWS ID: PA5020038 · PITTSBURGH, Pennsylvania 15222
Population Served
520,000
Total Violations
193
Health-Based Violations
10
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 79,034
- County
- Allegheny
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 179
- Treatment Tech Violations
- 10
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| CARBON, TOTAL | MR | 21 | 2022 |
| Total Haloacetic Acids (HAA5) | MR | 10 | 2025 |
| CYANIDE | MR | 8 | 2016 |
| Interim Enhanced Surface Water Treatment Rule | MR | 6 | 2025 |
| TTHM | MR | 6 | 2025 |
| Fluoride | MR | 6 | 2016 |
| Revised Total Coliform Rule | MON | 6 | 2016 |
| Lead and Copper Rule | TT | 6 | 2018 |
| 2,3,7,8-TCDD | MR | 5 | 2023 |
| Cadmium | MR | 4 | 2012 |
| Beryllium, Total | MR | 4 | 2012 |
| Chromium | MR | 4 | 2012 |
| Coliform (TCR) | MR | 4 | 2003 |
| Surface Water Treatment Rule | TT | 4 | 1994 |
| Gross Beta Particle Activity | MR | 3 | 1999 |
| Methoxychlor | MR | 3 | 2023 |
| Toxaphene | MR | 3 | 2023 |
| Endothall | MR | 3 | 2023 |
| Glyphosate | MR | 3 | 2023 |
| Picloram | MR | 3 | 2023 |
| Dinoseb | MR | 3 | 2023 |
| Carbofuran | MR | 3 | 2023 |
| Atrazine | MR | 3 | 2023 |
| Heptachlor | MR | 3 | 2023 |
| 2,4-D | MR | 3 | 2023 |
| HEXACHLOROBENZENE | MR | 3 | 2023 |
| Pentachlorophenol | MR | 3 | 2023 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MR | 3 | 2023 |
| Chlordane | MR | 3 | 2023 |
| 2,4,5-TP | MR | 3 | 2023 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 120 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFPeS | 8/5/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFBA | 8/5/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| NMeFOSAA | 8/5/2024 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| NEtFOSAA | 8/5/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFTrDA | 8/5/2024 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFTA | 8/5/2024 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| lithium | 8/5/2024 | <9 µg/L | 9 µg/L | Not Detected |
| PFHpS | 8/5/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NFDHA | 8/5/2024 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFMBA | 8/5/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeA | 8/5/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMPA | 8/5/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| 8:2 FTS | 8/5/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFEESA | 8/5/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 6:2 FTS | 8/5/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFDoA | 8/5/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 8/5/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxS | 8/5/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFNA | 8/5/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOS | 8/5/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| 4:2 FTS | 8/5/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDA | 8/5/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFBS | 8/5/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxA | 8/5/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFUnA | 8/5/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| 11Cl-PF3OUdS | 8/5/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 9Cl-PF3ONS | 8/5/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| ADONA | 8/5/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| HFPO-DA | 8/5/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFOA | 8/5/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOS | 5/7/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOA | 5/7/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| 11Cl-PF3OUdS | 5/7/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFDA | 5/7/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 5/7/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxA | 5/7/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFUnA | 5/7/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| 9Cl-PF3ONS | 5/7/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| ADONA | 5/7/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| HFPO-DA | 5/7/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBA | 5/7/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 4:2 FTS | 5/7/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFNA | 5/7/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| 8:2 FTS | 5/7/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 6:2 FTS | 5/7/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFPeS | 5/7/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| lithium | 5/7/2024 | <9 µg/L | 9 µg/L | Not Detected |
| PFTA | 5/7/2024 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| NEtFOSAA | 5/7/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| NMeFOSAA | 5/7/2024 | <0.006 µg/L | 0.006 µg/L | Not Detected |
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.