ZIP Code 81067
High RiskPFAS above EPA limits detected
1 compound exceed EPA Maximum Contaminant Levels in water serving this ZIP code. Standard pitcher filters like Brita do not remove PFAS. See filter recommendations below.
6
PFAS Detected
1
Above EPA Limits
3
Water Systems
103%
Highest % of MCL
Compounds Exceeding EPA Limits
PFOS Exceeds EPA limit
0 ppt MCL: 4 ppt 103% of limit
Detected: 4.10 ppt
PATTERSON VALLEY WC
CO0145540 Low LevelWater Type
Groundwater
PFAS Detected
1
Above MCL
0
State
Colorado
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
lithium | 309000.00ppt | No federal limit | — | Unregulated |
ROCKY FORD CITY OF
CO0145600 High RiskWater Type
Groundwater
PFAS Detected
4
Above MCL
1
State
Colorado
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOS Perfluorooctane sulfonic acid | 4.10ppt | 103% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFHxS Perfluorohexane sulfonic acid | 6.00ppt | 60% of limit
| 10 ppt | Below limit |
lithium | 48000.00ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 8.50ppt | No federal limit | — | Unregulated |
NORTH HOLBROOK WC
CO0145630 Low LevelWater Type
Groundwater
PFAS Detected
1
Above MCL
0
State
Colorado
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
lithium | 180000.00ppt | No federal limit | — | Unregulated |
Note: ZIP code 81067 is served by 3 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.