ZIP Code 02879
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.
9
PFAS Detected
2
Above EPA Limits
2
Water Systems
155%
Highest % of MCL
Compounds Exceeding EPA Limits
PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 153% of limit
Detected: 6.10 ppt
SOUTH KINGSTOWN-SOUTH SHORE
RI1615623 High RiskWater Type
Groundwater
PFAS Detected
4
Above MCL
1
State
Rhode Island
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOA Perfluorooctanoic acid | 6.10ppt | 153% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFPeA Perfluoropentanoic acid | 12.30ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 8.90ppt | No federal limit | — | Unregulated |
PFHpA Perfluoroheptanoic acid | 5.50ppt | No federal limit | — | Unregulated |
KINGSTON WATER DISTRICT
RI1858421 High RiskWater Type
Groundwater
PFAS Detected
5
Above MCL
1
State
Rhode Island
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOA Perfluorooctanoic acid | 6.20ppt | 155% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFBS Perfluorobutane sulfonic acid | 36.80ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 11.20ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 9.10ppt | No federal limit | — | Unregulated |
PFHpA Perfluoroheptanoic acid | 5.20ppt | No federal limit | — | Unregulated |
Note: ZIP code 02879 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.