Delaware
Water Quality Report
86 Good
Average Score
86/100
Water Systems
40
Population
509,897
Violations
64 12 unresolved
Score Distribution
12 A
1 B
2 C
2 D
0 F
Lowest Scoring Water Systems
48
Sunlake Terrace Water Systems D
FL6534886 Wilmington, DE 1,000 served
50
Veolia Water Delaware, Inc D
DE0000564 Wilmington, DE 100,495 served
70
Dover Water Department C
DE0000571 Dover, DE 39,491 served
74
Newark Water Department C
DE0000630 Newark, DE 40,000 served
89
Elkton West B
MD0070015 Newark, DE 3,500 served
Counties in Delaware
Cities in Delaware
View all 24 cities →Popular City Comparisons in Delaware
Quickly compare major cities in Delaware by water quality score and grade.
Frequently Asked Questions
Is tap water in Delaware safe to drink?
Delaware has an average WaterQ score of 86/100 across 40 public water systems. Safety can vary by city and system, so check your local report for recent violations and contaminants.
How many water systems are in Delaware?
WaterQ currently tracks 40 public water systems in Delaware.
Where can I compare cities in Delaware?
Use the city list below to open detailed reports, or visit the compare tool to benchmark two cities side-by-side on score, grade, and system coverage.