MALDEN WATER DEPT
PWS ID: WA5350550 · Rosalia, Washington 99170-0006
Population Served
215
Total Violations
59
Health-Based Violations
3
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 65
- County
- Whitman
- School/Daycare
- No
- MCL Violations
- 3
- Monitoring Violations
- 54
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Lead and Copper Rule | MR | 23 | 2007 |
| Nitrate | MR | 10 | 2022 |
| Coliform (TCR) | MR | 7 | 2010 |
| Coliform (TCR) | MCL | 3 | 1994 |
| Consumer Confidence Rule | Other | 2 | 2020 |
| Arsenic | MR | 1 | 2011 |
| Barium | MR | 1 | 2011 |
| Cadmium | MR | 1 | 2011 |
| Chromium | MR | 1 | 2011 |
| CYANIDE | MR | 1 | 2011 |
| Mercury | MR | 1 | 2011 |
| Nitrite | MR | 1 | 2011 |
| Selenium | MR | 1 | 2011 |
| Beryllium, Total | MR | 1 | 2011 |
| Thallium, Total | MR | 1 | 2011 |
| Fluoride | MR | 1 | 2011 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1979 |
| Nickel | MR | 1 | 2011 |
| Antimony, Total | MR | 1 | 2011 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.