B79/100

Delaware Tap Water Quality Rankings 2026

24 cities · 977,709 people served

Top Contaminant Concerns

Copper (90th percentile)PFOSPFOALead (90th percentile)PFNA

All Cities in Delaware

#CityScorePopulationViolations
1NewarkA (87)323,07564
2DoverB (79)238,60064
3WilmingtonB (62)208,47121
4FrankfordA (91)31,0001
5Rehoboth BeachB (79)26,5758
6Bethany BeachA (82)24,4509
7MiddletownA (92)22,2578
8SmyrnaA (81)11,8133
9LewesA (82)11,02713
10Long NeckB (66)11,0007
11MilfordA (93)9,8003
12MillsboroB (69)8,5688
13GeorgetownA (81)7,2590
14SeafordB (63)6,6999
15BridgevilleB (72)6,0004
16New CastleA (98)5,5492
17SelbyvilleA (84)5,0027
18CamdenA (81)5,0004
19LaurelA (88)3,9844
20HarringtonB (75)3,56214
21MiltonA (91)3,2006
22DelmarA (80)2,0275
23FeltonC (50)1,59115
24BladesA (80)1,2008