WILMINGTON WATER DEPARTMENT
High Risk1 PFAS compound(s) exceed EPA Maximum Contaminant Levels
This utility has until 2029 to install treatment under the EPA's April 2024 PFAS rule. In the meantime, a point-of-use filter certified NSF/ANSI 58 for PFOA/PFOS provides reliable interim protection.
6
PFAS Detected
1
Above EPA Limits
23
ZIPs Served
Surface
Water Source
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOA Perfluorooctanoic acid | 9.90ppt | 248% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFPeA Perfluoropentanoic acid | 32.20ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 21.10ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 14.10ppt | No federal limit | — | Unregulated |
PFHpA Perfluoroheptanoic acid | 8.40ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 3.60ppt | No federal limit | — | Unregulated |
ZIP Codes Served by This Utility
19082 19701 19702 19707 19708 19710 19720 19732 19801 19802 19803 19804 19805 19806 19807 19808 19809 19810 19850 19880 19884 19898 19899
Click any ZIP to see the full result page for that area.
About this data
Source
EPA UCMR 5 — January 2026 release
Sampling period
January 2023 – December 2025
Water system ID (PWSID)
DE0000663
Detection threshold (MRL)
~1.5–2 ppt — "Not detected" means below this floor