ZIP Code 72734
Low Level4
PFAS Detected
0
Above EPA Limits
2
Water Systems
N/A
Highest % of MCL
DECATUR WATERWORKS
AR0000052 Low LevelWater Type
Groundwater
PFAS Detected
1
Above MCL
0
State
Arkansas
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
lithium | 10000.00ppt | No federal limit | — | Unregulated |
SILOAM SPRINGS WATERWORKS
AR0000056 Low LevelWater Type
Surface Water
PFAS Detected
3
Above MCL
0
State
Arkansas
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFBS Perfluorobutane sulfonic acid | 7.00ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 5.50ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 3.80ppt | No federal limit | — | Unregulated |
Note: ZIP code 72734 is served by 2 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.