ZIP Code 86301
High RiskPFAS above EPA limits detected
2 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
2
Above EPA Limits
1
Water System
285%
Highest % of MCL
Compounds Exceeding EPA Limits
PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 285% of limit
Detected: 11.40 ppt
PFOS Exceeds EPA limit
0 ppt MCL: 4 ppt 218% of limit
Detected: 8.70 ppt
PRESCOTT CITY OF
AZ0413045 High RiskWater Type
Groundwater
PFAS Detected
7
Above MCL
2
State
Arizona
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOA Perfluorooctanoic acid | 11.40ppt | 285% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFOS Perfluorooctane sulfonic acid | 8.70ppt | 218% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFHxS Perfluorohexane sulfonic acid | 6.50ppt | 65% of limit
| 10 ppt | Below limit |
PFPeA Perfluoropentanoic acid | 14.90ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 12.60ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 7.50ppt | No federal limit | — | Unregulated |
PFHpA Perfluoroheptanoic acid | 3.60ppt | 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.