SILVERTON, CITY OF
PWS ID: OR4100823 · SILVERTON, Oregon 97381
Population Served
10,484
Total Violations
118
Health-Based Violations
15
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 3,775
- County
- Marion
- School/Daycare
- No
- MCL Violations
- 1
- Monitoring Violations
- 97
- Treatment Tech Violations
- 14
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Surface Water Treatment Rule | TT | 11 | 2002 |
| Surface Water Treatment Rule | MR | 10 | 2012 |
| TTHM | MR | 10 | 2022 |
| Total Haloacetic Acids (HAA5) | MR | 10 | 2022 |
| CYANIDE | MR | 4 | 2011 |
| Nickel | MR | 4 | 2011 |
| Interim Enhanced Surface Water Treatment Rule | MR | 4 | 2012 |
| Antimony, Total | MR | 4 | 2011 |
| Beryllium, Total | MR | 4 | 2011 |
| Thallium, Total | MR | 4 | 2011 |
| Interim Enhanced Surface Water Treatment Rule | TT | 3 | 2024 |
| Nitrate | MR | 2 | 2003 |
| Revised Total Coliform Rule | MON | 2 | 2025 |
| Arsenic | MR | 1 | 2004 |
| BHC-GAMMA | MR | 1 | 2002 |
| Methoxychlor | MR | 1 | 2002 |
| Toxaphene | MR | 1 | 2002 |
| Dalapon | MR | 1 | 2002 |
| Endothall | MR | 1 | 2002 |
| Di(2-ethylhexyl) adipate | MR | 1 | 2002 |
| OXAMYL | MR | 1 | 2002 |
| Di(2-ethylhexyl) phthalate | MR | 1 | 2002 |
| Picloram | MR | 1 | 2002 |
| Atrazine | MR | 1 | 2002 |
| LASSO | MR | 1 | 2002 |
| Heptachlor epoxide | MR | 1 | 2002 |
| 2,4,5-TP | MR | 1 | 2002 |
| Pentachlorophenol | MR | 1 | 2002 |
| ETHYLENE DIBROMIDE | MR | 1 | 2002 |
| Nitrite | MR | 1 | 2011 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 120 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFDoA | 9/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| lithium | 9/12/2023 | <9 µg/L | 9 µg/L | Not Detected |
| PFMBA | 9/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFUnA | 9/12/2023 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFDA | 9/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NMeFOSAA | 9/12/2023 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| PFTrDA | 9/12/2023 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFTA | 9/12/2023 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| PFPeS | 9/12/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFPeA | 9/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxA | 9/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFOA | 9/12/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOS | 9/12/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHpS | 9/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NEtFOSAA | 9/12/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFEESA | 9/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFBS | 9/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMPA | 9/12/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| 8:2 FTS | 9/12/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 4:2 FTS | 9/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 6:2 FTS | 9/12/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBA | 9/12/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| HFPO-DA | 9/12/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| ADONA | 9/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 11Cl-PF3OUdS | 9/12/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFNA | 9/12/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHxS | 9/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 9/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NFDHA | 9/12/2023 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| 9Cl-PF3ONS | 9/12/2023 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFDoA | 8/15/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NMeFOSAA | 8/15/2024 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| PFBS | 8/15/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 8/15/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxS | 8/15/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFNA | 8/15/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOS | 8/15/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFDA | 8/15/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxA | 8/15/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFUnA | 8/15/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| 11Cl-PF3OUdS | 8/15/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 9Cl-PF3ONS | 8/15/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| ADONA | 8/15/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| HFPO-DA | 8/15/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFTA | 8/15/2024 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| PFOA | 8/15/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFTrDA | 8/15/2024 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFBA | 8/15/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| lithium | 8/15/2024 | <9 µg/L | 9 µg/L | Not Detected |
| PFMBA | 8/15/2024 | <0.003 µg/L | 0.003 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.