ZIP Code 38401
High RiskPFAS above EPA limits detected
4 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.
13
PFAS Detected
4
Above EPA Limits
3
Water Systems
220%
Highest % of MCL
Compounds Exceeding EPA Limits
PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 220% of limit
Detected: 8.80 ppt
PFOS Exceeds EPA limit
0 ppt MCL: 4 ppt 133% of limit
Detected: 5.30 ppt
COLUMBIA POWER AND WATER SYSTEMS
TN0000128 Low LevelWater Type
Surface Water
PFAS Detected
1
Above MCL
0
State
Tennessee
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFHxA Perfluorohexanoic acid | 3.20ppt | No federal limit | — | Unregulated |
LEWISBURG WATER SYSTEM
TN0000400 High RiskWater Type
Surface Water
PFAS Detected
6
Above MCL
2
State
Tennessee
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOA Perfluorooctanoic acid | 8.80ppt | 220% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFOS Perfluorooctane sulfonic acid | 5.30ppt | 133% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFBS Perfluorobutane sulfonic acid | 9.20ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 6.50ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 5.50ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 4.70ppt | No federal limit | — | Unregulated |
MAURY CO WATER SYSTEM
TN0000770 High RiskWater Type
Surface Water
PFAS Detected
6
Above MCL
2
State
Tennessee
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOA Perfluorooctanoic acid | 7.10ppt | 178% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFOS Perfluorooctane sulfonic acid | 4.10ppt | 103% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFBS Perfluorobutane sulfonic acid | 7.20ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 6.00ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 5.80ppt | No federal limit | — | Unregulated |
PFHpA Perfluoroheptanoic acid | 3.80ppt | No federal limit | — | Unregulated |
Note: ZIP code 38401 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.