UNDERWOOD
PWS ID: WA5390200 · CARSON, Washington 98610
Population Served
1,000
Total Violations
202
Health-Based Violations
0
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 379
- County
- Skamania
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 196
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Endrin | MR | 11 | 2008 |
| Methoxychlor | MR | 11 | 2008 |
| Di(2-ethylhexyl) phthalate | MR | 11 | 2008 |
| Hexachlorocyclopentadiene | MR | 11 | 2008 |
| Atrazine | MR | 11 | 2008 |
| Heptachlor | MR | 11 | 2008 |
| Chlordane | MR | 11 | 2008 |
| Toxaphene | MR | 11 | 2008 |
| Di(2-ethylhexyl) adipate | MR | 11 | 2008 |
| LASSO | MR | 11 | 2008 |
| Heptachlor epoxide | MR | 11 | 2008 |
| Benzo(a)pyrene | MR | 11 | 2008 |
| BHC-GAMMA | MR | 11 | 2008 |
| Simazine | MR | 11 | 2008 |
| HEXACHLOROBENZENE | MR | 11 | 2008 |
| Consumer Confidence Rule | Other | 3 | 2014 |
| Revised Total Coliform Rule | MON | 3 | 2025 |
| Pentachlorophenol | MR | 3 | 2008 |
| Coliform (TCR) | MR | 2 | 1996 |
| cis-1,2-Dichloroethylene | MR | 1 | 2011 |
| DICHLOROMETHANE | MR | 1 | 2011 |
| o-Dichlorobenzene | MR | 1 | 2011 |
| p-Dichlorobenzene | MR | 1 | 2011 |
| Vinyl chloride | MR | 1 | 2011 |
| 1,1-Dichloroethylene | MR | 1 | 2011 |
| 1,2-Dichloroethane | MR | 1 | 2011 |
| Carbon tetrachloride | MR | 1 | 2011 |
| 1,2-Dichloropropane | MR | 1 | 2011 |
| Trichloroethylene | MR | 1 | 2011 |
| 1,1,2-Trichloroethane | MR | 1 | 2011 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.