PlainWater

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.