ZIP Code 35661
High RiskPFAS above EPA limits detected
6 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.
19
PFAS Detected
6
Above EPA Limits
3
Water Systems
738%
Highest % of MCL
Compounds Exceeding EPA Limits
PFOS Exceeds EPA limit
0 ppt MCL: 4 ppt 738% of limit
Detected: 29.50 ppt
PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 495% of limit
Detected: 19.80 ppt
COLBERT COUNTY RURAL WATER SYSTEM
AL0000314 High RiskWater Type
GU
PFAS Detected
8
Above MCL
2
State
Alabama
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOS Perfluorooctane sulfonic acid | 29.50ppt | 738% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFOA Perfluorooctanoic acid | 19.80ppt | 495% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFHxS Perfluorohexane sulfonic acid | 3.80ppt | 38% of limit
| 10 ppt | Below limit |
PFBA Perfluorobutanoic acid | 37.70ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 12.00ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 8.50ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 5.10ppt | No federal limit | — | Unregulated |
PFHpA Perfluoroheptanoic acid | 4.30ppt | No federal limit | — | Unregulated |
MUSCLE SHOALS UTILITY BOARD
AL0000321 High RiskWater Type
Surface Water
PFAS Detected
5
Above MCL
2
State
Alabama
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOS Perfluorooctane sulfonic acid | 16.80ppt | 420% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFOA Perfluorooctanoic acid | 9.60ppt | 240% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFBA Perfluorobutanoic acid | 12.00ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 5.10ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 4.20ppt | No federal limit | — | Unregulated |
SPRING VALLEY WATER AUTHORITY
AL0000329 High RiskWater Type
Surface Water
PFAS Detected
6
Above MCL
2
State
Alabama
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOS Perfluorooctane sulfonic acid | 19.00ppt | 475% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFOA Perfluorooctanoic acid | 11.00ppt | 275% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFBS Perfluorobutane sulfonic acid | 9.00ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 8.80ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 5.10ppt | No federal limit | — | Unregulated |
PFHpA Perfluoroheptanoic acid | 3.10ppt | No federal limit | — | Unregulated |
Note: ZIP code 35661 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.