ZIP Code 95448
Low Level4
PFAS Detected
0
Above EPA Limits
2
Water Systems
45%
Highest % of MCL
RODNEY STRONG VINEYARDS
CA4900897 Low LevelWater Type
Groundwater
PFAS Detected
1
Above MCL
0
State
California
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
lithium | 19900.00ppt | No federal limit | — | Unregulated |
HEALDSBURG, CITY OF
CA4910005 Low LevelWater Type
GU
PFAS Detected
3
Above MCL
0
State
California
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFHxS Perfluorohexane sulfonic acid | 4.50ppt | 45% of limit
| 10 ppt | Below limit |
PFBS Perfluorobutane sulfonic acid | 5.20ppt | No federal limit | — | Unregulated |
PFDoA | 3.10ppt | No federal limit | — | Unregulated |
Note: ZIP code 95448 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.