MOUNTAIN HOME, CITY OF
PWS ID: ID4200032 · MOUNTAIN HOME, Idaho 83647
Population Served
14,651
Total Violations
249
Health-Based Violations
23
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 5,842
- County
- Elmore
- School/Daycare
- No
- MCL Violations
- 14
- Monitoring Violations
- 217
- Treatment Tech Violations
- 9
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 14 | 2015 |
| Nitrate | MR | 12 | 2021 |
| Picloram | MR | 7 | 2014 |
| 2,4,5-TP | MR | 7 | 2014 |
| Dalapon | MR | 7 | 2014 |
| E. COLI | MR | 7 | 2024 |
| 2,4-D | MR | 7 | 2014 |
| Dinoseb | MR | 6 | 2014 |
| Endothall | MR | 6 | 2021 |
| Diquat | MR | 6 | 2021 |
| Revised Total Coliform Rule | TT | 5 | 2025 |
| Gross Alpha, Excl. Radon and U | MR | 4 | 2021 |
| Radium-228 | MR | 4 | 2021 |
| Pentachlorophenol | MR | 4 | 2014 |
| Combined Uranium | MR | 4 | 2021 |
| LEAD AND COPPER RULE REVISIONS | TT | 4 | 2024 |
| Radium-226 | MR | 4 | 2021 |
| Methoxychlor | MR | 3 | 2014 |
| Toxaphene | MR | 3 | 2014 |
| Glyphosate | MR | 3 | 2014 |
| Di(2-ethylhexyl) adipate | MR | 3 | 2014 |
| Simazine | MR | 3 | 2014 |
| LASSO | MR | 3 | 2014 |
| Total Polychlorinated Biphenyls (PCB) | MR | 3 | 2014 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MR | 3 | 2014 |
| ETHYLENE DIBROMIDE | MR | 3 | 2014 |
| 1,2,4-Trichlorobenzene | MR | 3 | 2021 |
| Xylenes, Total | MR | 3 | 2021 |
| DICHLOROMETHANE | MR | 3 | 2021 |
| p-Dichlorobenzene | MR | 3 | 2021 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 540 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFMPA | 5/6/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHxS | 5/6/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 11Cl-PF3OUdS | 5/6/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFHpS | 5/6/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeS | 5/6/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| NFDHA | 5/6/2024 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFEESA | 5/6/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeA | 5/6/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 8:2 FTS | 5/6/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 4:2 FTS | 5/6/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 6:2 FTS | 5/6/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBA | 5/6/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| HFPO-DA | 5/6/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| ADONA | 5/6/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| lithium | 5/6/2024 | <9 µg/L | 9 µg/L | Not Detected |
| PFHpA | 5/6/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMBA | 5/6/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFBS | 5/6/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 9Cl-PF3ONS | 5/6/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| NMeFOSAA | 5/6/2024 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| NEtFOSAA | 5/6/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFTrDA | 5/6/2024 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFTA | 5/6/2024 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| PFNA | 5/6/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOS | 5/6/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOA | 5/6/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFDA | 5/6/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 5/6/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxA | 5/6/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFUnA | 5/6/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFHxS | 5/6/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| HFPO-DA | 5/6/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBS | 5/6/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NEtFOSAA | 5/6/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| NMeFOSAA | 5/6/2024 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| PFHpA | 5/6/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFNA | 5/6/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOS | 5/6/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOA | 5/6/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFDA | 5/6/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 5/6/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxA | 5/6/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFUnA | 5/6/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| 11Cl-PF3OUdS | 5/6/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFTrDA | 5/6/2024 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| ADONA | 5/6/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFTA | 5/6/2024 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| PFBA | 5/6/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 6:2 FTS | 5/6/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 4:2 FTS | 5/6/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
PFAS data from EPA UCMR5 monitoring program (2023-2025).
This data is provided for informational purposes only.