LYONS MEHAMA WATER DISTRICT
PWS ID: OR4100493 · LYONS, Oregon 97358
Population Served
1,300
Total Violations
281
Health-Based Violations
11
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 824
- County
- Linn
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 250
- Treatment Tech Violations
- 11
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Surface Water Treatment Rule | MR | 79 | 2025 |
| Lead and Copper Rule | MR | 26 | 2025 |
| Interim Enhanced Surface Water Treatment Rule | MR | 15 | 2025 |
| Coliform (TCR) | MR | 12 | 2010 |
| Consumer Confidence Rule | Other | 11 | 2025 |
| Surface Water Treatment Rule | TT | 9 | 2017 |
| Nitrate | MR | 8 | 2012 |
| Vinyl chloride | MR | 6 | 2009 |
| 1,1,2-Trichloroethane | MR | 6 | 2009 |
| 1,1,1-Trichloroethane | MR | 6 | 2009 |
| 1,2-Dichloropropane | MR | 6 | 2009 |
| trans-1,2-Dichloroethylene | MR | 6 | 2009 |
| 1,2,4-Trichlorobenzene | MR | 5 | 2009 |
| CHLOROBENZENE | MR | 5 | 2009 |
| Arsenic | MR | 5 | 2012 |
| Xylenes, Total | MR | 5 | 2009 |
| o-Dichlorobenzene | MR | 5 | 2009 |
| Styrene | MR | 5 | 2009 |
| Toluene | MR | 5 | 2009 |
| cis-1,2-Dichloroethylene | MR | 4 | 2009 |
| DICHLOROMETHANE | MR | 4 | 2009 |
| p-Dichlorobenzene | MR | 4 | 2009 |
| 1,1-Dichloroethylene | MR | 4 | 2009 |
| 1,2-Dichloroethane | MR | 4 | 2009 |
| Tetrachloroethylene | MR | 4 | 2009 |
| Benzene | MR | 4 | 2009 |
| Ethylbenzene | MR | 4 | 2009 |
| Trichloroethylene | MR | 4 | 2009 |
| Carbon tetrachloride | MR | 4 | 2009 |
| Lead and Copper Rule | TT | 2 | 2000 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.