WILMINGTON WATER DEPARTMENT
Wilmington, DE · 107,976 served
WILMINGTON WATER DEPARTMENT serves 107,976 people in Wilmington, DE. It has 0 health-based violations in the last 5 years. TapGraded gives this system a C.
Score breakdown
Health-based violations (5y)
0
Monitoring violations (5y)
1
Currently unaddressed
0
Overall score
78/100
Violation history (last 5 years)
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Lead (Lead and Copper Rule)
EPA's current lead action level is 15 ppb (dropping to 10 ppb in 2027 under the Lead and Copper Rule Improvements).
PFAS (UCMR5 occurrence data)
System details
- System type
- Community water system
- Water source
- Surface water
- Ownership
- Local government
- Service connections
- 37,915
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Is Wilmington, DE tap water safe to drink?
WILMINGTON WATER DEPARTMENT has 0 health-based violations in the last 5 years. TapGraded gives this system a C.
Does WILMINGTON WATER DEPARTMENT have lead in its water?
The most recent 90th-percentile lead sample is 0 ppb, versus the EPA action level of 15 ppb.
Has PFAS been detected in WILMINGTON WATER DEPARTMENT's water?
Yes — PFAS was detected at or above the EPA MCL for 1 of the tracked analytes.
Source: EPA SDWIS/ECHO · Data as of 2026Q2