WILMA PORT OF
PWS ID: WA5397300 · Clarkston, Washington 99403
Population Served
108
Total Violations
52
Health-Based Violations
12
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Local
- Connections
- 34
- County
- Whitman
- School/Daycare
- No
- MCL Violations
- 12
- Monitoring Violations
- 37
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 12 | 2004 |
| Coliform (TCR) | MR | 11 | 2012 |
| Lead and Copper Rule | MR | 7 | 2002 |
| Diquat | MR | 1 | 2006 |
| Cadmium | MR | 1 | 2008 |
| Chromium | MR | 1 | 2008 |
| CYANIDE | MR | 1 | 2008 |
| Nickel | MR | 1 | 2008 |
| Selenium | MR | 1 | 2008 |
| Antimony, Total | MR | 1 | 2008 |
| Beryllium, Total | MR | 1 | 2008 |
| Thallium, Total | MR | 1 | 2008 |
| Aldicarb sulfoxide | MR | 1 | 2008 |
| Fluoride | MR | 1 | 2008 |
| Nitrate | MR | 1 | 2010 |
| OXAMYL | MR | 1 | 2008 |
| Aldicarb sulfone | MR | 1 | 2008 |
| Aldicarb | MR | 1 | 2008 |
| Mercury | MR | 1 | 2008 |
| Carbofuran | MR | 1 | 2008 |
| Arsenic | MR | 1 | 2008 |
| Barium | MR | 1 | 2008 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.