MESA WATER DEPARTMENT
PWS ID: WA5354100 · Mesa, Washington 99343-9670
Population Served
495
Total Violations
74
Health-Based Violations
17
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 163
- County
- Franklin
- School/Daycare
- No
- MCL Violations
- 17
- Monitoring Violations
- 52
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 17 | 2004 |
| Nitrate | MR | 15 | 2023 |
| Total Haloacetic Acids (HAA5) | MR | 3 | 2019 |
| TTHM | MR | 2 | 2019 |
| Coliform (TCR) | MR | 2 | 1997 |
| Endrin | MR | 1 | 2014 |
| BHC-GAMMA | MR | 1 | 2014 |
| Methoxychlor | MR | 1 | 2014 |
| Di(2-ethylhexyl) adipate | MR | 1 | 2014 |
| Simazine | MR | 1 | 2014 |
| Di(2-ethylhexyl) phthalate | MR | 1 | 2014 |
| Atrazine | MR | 1 | 2014 |
| LASSO | MR | 1 | 2014 |
| Heptachlor epoxide | MR | 1 | 2014 |
| Benzo(a)pyrene | MR | 1 | 2014 |
| Chlordane | MR | 1 | 2014 |
| Picloram | MR | 1 | 2014 |
| 2,4,5-TP | MR | 1 | 2014 |
| Pentachlorophenol | MR | 1 | 2014 |
| Lead and Copper Rule | MR | 1 | 1997 |
| Barium | MR | 1 | 1979 |
| Selenium | MR | 1 | 1979 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1979 |
| Fluoride | MR | 1 | 1979 |
| Chromium | MR | 1 | 1979 |
| Asbestos | MR | 1 | 2011 |
| Consumer Confidence Rule | Other | 1 | 1999 |
| Toxaphene | MR | 1 | 2014 |
| Arsenic | MR | 1 | 1979 |
| Cadmium | MR | 1 | 1979 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.