MNIHNAPA WATER SYSTEM
PWS ID: 083090047 · HARLEM, 08 59526
Population Served
220
Total Violations
203
Health-Based Violations
29
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Native American
- Connections
- 51
- School/Daycare
- No
- MCL Violations
- 21
- Monitoring Violations
- 169
- Treatment Tech Violations
- 8
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 38 | 2007 |
| Coliform (TCR) | MCL | 18 | 2014 |
| Groundwater Rule | TT | 5 | 2014 |
| E. COLI | MR | 4 | 2020 |
| Dalapon | MR | 3 | 2020 |
| Diquat | MR | 3 | 2020 |
| Endothall | MR | 3 | 2020 |
| Carbofuran | MR | 3 | 2020 |
| 2,4-D | MR | 3 | 2020 |
| 2,4,5-TP | MR | 3 | 2020 |
| Pentachlorophenol | MR | 3 | 2020 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MR | 3 | 2020 |
| OXAMYL | MR | 3 | 2020 |
| Dinoseb | MR | 3 | 2020 |
| ETHYLENE DIBROMIDE | MR | 3 | 2020 |
| Picloram | MR | 3 | 2020 |
| Glyphosate | MR | 3 | 2020 |
| Gross Alpha, Excl. Radon and U | MR | 3 | 2021 |
| Radium-226 | MR | 3 | 2021 |
| Radium-228 | MR | 3 | 2021 |
| Combined Radium (-226 and -228) | MR | 3 | 2021 |
| Combined Uranium | MR | 3 | 2021 |
| Revised Total Coliform Rule | MCL | 3 | 2020 |
| Surface Water Treatment Rule | TT | 3 | 2016 |
| Methoxychlor | MR | 2 | 2019 |
| Toxaphene | MR | 2 | 2019 |
| Di(2-ethylhexyl) phthalate | MR | 2 | 2019 |
| Atrazine | MR | 2 | 2019 |
| LASSO | MR | 2 | 2019 |
| 2,3,7,8-TCDD | MR | 2 | 2019 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.