OMAK HUD
PWS ID: 105300008 · NESPELEM, 10 99155
Population Served
380
Total Violations
529
Health-Based Violations
7
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Native American
- Connections
- 109
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 498
- Treatment Tech Violations
- 7
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Nitrate | MR | 19 | 2023 |
| Consumer Confidence Rule | Other | 19 | 2025 |
| Gross Alpha, Excl. Radon and U | MR | 18 | 2014 |
| Atrazine | MR | 12 | 2017 |
| Benzene | MR | 11 | 2017 |
| Antimony, Total | MR | 10 | 2017 |
| Coliform (TCR) | MR | 9 | 2012 |
| Combined Radium (-226 and -228) | MR | 9 | 2014 |
| Combined Uranium | MR | 8 | 2014 |
| Di(2-ethylhexyl) phthalate | MR | 8 | 2017 |
| Endrin | MR | 7 | 2017 |
| BHC-GAMMA | MR | 7 | 2017 |
| Methoxychlor | MR | 7 | 2017 |
| Toxaphene | MR | 7 | 2017 |
| Di(2-ethylhexyl) adipate | MR | 7 | 2017 |
| Simazine | MR | 7 | 2017 |
| Hexachlorocyclopentadiene | MR | 7 | 2017 |
| LASSO | MR | 7 | 2017 |
| Heptachlor epoxide | MR | 7 | 2017 |
| Chlordane | MR | 7 | 2017 |
| Benzo(a)pyrene | MR | 7 | 2017 |
| Chlorine | MR | 7 | 2023 |
| HEXACHLOROBENZENE | MR | 7 | 2017 |
| Heptachlor | MR | 7 | 2017 |
| Picloram | MR | 7 | 2017 |
| Arsenic | MR | 6 | 2017 |
| Barium | MR | 6 | 2017 |
| Cadmium | MR | 6 | 2017 |
| Mercury | MR | 6 | 2017 |
| Fluoride | MR | 6 | 2017 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.