COLTON WATER DEPARTMENT
PWS ID: WA5314100 · Colton, Washington 99113
Population Served
632
Total Violations
47
Health-Based Violations
1
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 203
- County
- Whitman
- School/Daycare
- No
- MCL Violations
- 1
- Monitoring Violations
- 43
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| CYANIDE | MR | 3 | 2002 |
| Antimony, Total | MR | 3 | 2002 |
| Thallium, Total | MR | 3 | 2002 |
| Consumer Confidence Rule | Other | 3 | 2016 |
| Nickel | MR | 3 | 2002 |
| Beryllium, Total | MR | 3 | 2002 |
| TTHM | MR | 2 | 2018 |
| Coliform (TCR) | MR | 2 | 1993 |
| Pentachlorophenol | MR | 2 | 2008 |
| Picloram | MR | 1 | 2008 |
| Dinoseb | MR | 1 | 2008 |
| 2,4,5-TP | MR | 1 | 2008 |
| Endrin | MR | 1 | 2008 |
| Toxaphene | MR | 1 | 2008 |
| Di(2-ethylhexyl) adipate | MR | 1 | 2008 |
| Simazine | MR | 1 | 2008 |
| Di(2-ethylhexyl) phthalate | MR | 1 | 2008 |
| Atrazine | MR | 1 | 2008 |
| LASSO | MR | 1 | 2008 |
| Heptachlor | MR | 1 | 2008 |
| Benzo(a)pyrene | MR | 1 | 2008 |
| Chlordane | MR | 1 | 2008 |
| Lead and Copper Rule | MR | 1 | 2000 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1979 |
| Total Haloacetic Acids (HAA5) | MR | 1 | 2018 |
| BHC-GAMMA | MR | 1 | 2008 |
| Hexachlorocyclopentadiene | MR | 1 | 2008 |
| Methoxychlor | MR | 1 | 2008 |
| Heptachlor epoxide | MR | 1 | 2008 |
| Coliform (TCR) | MCL | 1 | 1993 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.