ZIP Code 83704
High RiskPFAS above EPA limits detected
3 compounds exceed EPA Maximum Contaminant Levels in water serving this ZIP code. Standard pitcher filters like Brita do not remove PFAS. See filter recommendations below.
9
PFAS Detected
3
Above EPA Limits
2
Water Systems
510%
Highest % of MCL
Compounds Exceeding EPA Limits
PFNA Exceeds EPA limit
0 ppt MCL: 10 ppt 510% of limit
Detected: 51.00 ppt
PFOS Exceeds EPA limit
0 ppt MCL: 4 ppt 245% of limit
Detected: 9.80 ppt
PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 148% of limit
Detected: 5.90 ppt
Veolia Water ID
ID4010016 Low LevelWater Type
Groundwater
PFAS Detected
1
Above MCL
0
State
Idaho
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
lithium | 24300.00ppt | No federal limit | — | Unregulated |
CAPITOL WATER CORP
ID4010022 High RiskWater Type
Groundwater
PFAS Detected
8
Above MCL
3
State
Idaho
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFNA Perfluorononanoic acid | 51.00ppt | 510% of limit
| 10 ppt | ⚠ Exceeds MCL |
PFOS Perfluorooctane sulfonic acid | 9.80ppt | 245% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFOA Perfluorooctanoic acid | 5.90ppt | 148% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFHxS Perfluorohexane sulfonic acid | 5.50ppt | 55% of limit
| 10 ppt | Below limit |
lithium | 24000.00ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 5.40ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 5.20ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 4.00ppt | No federal limit | — | Unregulated |
Note: ZIP code 83704 is served by 2 separate water utilities.
Results above show data for each system independently.
Data source: EPA Unregulated Contaminant Monitoring Rule, 5th cycle (UCMR 5) — January 2026 release.
UCMR 5 tested ~10,000 public water systems serving more than 25 people between 2023-2025 for 29 PFAS compounds.
Detection values represent the highest single-sample result measured at entry points to the distribution system.