LEWIS CO WATER DIST #1
PWS ID: WA5347000 · Napavine, Washington 98565
Population Served
1,174
Total Violations
400
Health-Based Violations
27
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 116
- County
- Lewis
- School/Daycare
- No
- MCL Violations
- 27
- Monitoring Violations
- 369
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 27 | 1994 |
| Coliform (TCR) | MR | 17 | 2000 |
| 1,2,4-Trichlorobenzene | MR | 16 | 2008 |
| o-Dichlorobenzene | MR | 16 | 2008 |
| p-Dichlorobenzene | MR | 16 | 2008 |
| Carbon tetrachloride | MR | 16 | 2008 |
| 1,2-Dichloropropane | MR | 16 | 2008 |
| Trichloroethylene | MR | 16 | 2008 |
| 1,1,2-Trichloroethane | MR | 16 | 2008 |
| Tetrachloroethylene | MR | 16 | 2008 |
| Benzene | MR | 16 | 2008 |
| Styrene | MR | 16 | 2008 |
| DICHLOROMETHANE | MR | 16 | 2008 |
| Vinyl chloride | MR | 16 | 2008 |
| Ethylbenzene | MR | 16 | 2008 |
| 1,1-Dichloroethylene | MR | 16 | 2008 |
| Toluene | MR | 16 | 2008 |
| CHLOROBENZENE | MR | 16 | 2008 |
| cis-1,2-Dichloroethylene | MR | 16 | 2008 |
| 1,2-Dichloroethane | MR | 16 | 2008 |
| trans-1,2-Dichloroethylene | MR | 16 | 2008 |
| 1,1,1-Trichloroethane | MR | 16 | 2008 |
| Endrin | MR | 1 | 2012 |
| BHC-GAMMA | MR | 1 | 2012 |
| Methoxychlor | MR | 1 | 2012 |
| Toxaphene | MR | 1 | 2012 |
| Di(2-ethylhexyl) adipate | MR | 1 | 2012 |
| Simazine | MR | 1 | 2012 |
| Di(2-ethylhexyl) phthalate | MR | 1 | 2012 |
| LASSO | MR | 1 | 2012 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.