ZIP Code 80435
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.
7
PFAS Detected
3
Above EPA Limits
1
Water System
550%
Highest % of MCL
Compounds Exceeding EPA Limits
PFOS Exceeds EPA limit
0 ppt MCL: 4 ppt 550% of limit
Detected: 22.00 ppt
PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 145% of limit
Detected: 5.80 ppt
PFHxS Exceeds EPA limit
0 ppt MCL: 10 ppt 130% of limit
Detected: 13.00 ppt
SNAKE RIVER WD
CO0159105 High RiskWater Type
Groundwater
PFAS Detected
7
Above MCL
3
State
Colorado
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOS Perfluorooctane sulfonic acid | 22.00ppt | 550% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFOA Perfluorooctanoic acid | 5.80ppt | 145% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFHxS Perfluorohexane sulfonic acid | 13.00ppt | 130% of limit
| 10 ppt | ⚠ Exceeds MCL |
PFPeA Perfluoropentanoic acid | 8.00ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 6.60ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 6.30ppt | No federal limit | — | Unregulated |
PFHpA Perfluoroheptanoic acid | 4.20ppt | No federal limit | — | Unregulated |
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.