Tap water in Millsboro, DE — ZIP 19966
4 public water systems serving about 106,496 people. PFAS "forever chemicals" have been detected here.
C
Fair
PFAS detected: at least one system serving this ZIP reported PFAS in EPA UCMR 5
testing. Levels and the 2024 federal limits are shown per system below.
Water systems serving 19966
Rehoboth Pump District (Tui)
PWSID DE0000991 · serves 81,417 ·
groundwater
0 health-based / 0 total violations (5 yrs)
· PFAS up to 9.4 ppt — above federal limit
Long Neck Water Company
PWSID DE0000625 · serves 11,000 ·
groundwater
0 health-based / 0 total violations (5 yrs)
Millsboro Water Department
PWSID DE0000622 · serves 8,568 ·
groundwater
0 health-based / 1 total violations (5 yrs)
Artesian Northern Sussex Regional
PWSID DE0020003 · serves 5,511 ·
groundwater
0 health-based / 0 total violations (5 yrs)
· PFAS up to 8.3 ppt — above federal limit
Grades summarize EPA SDWIS violation records (last 5 years) and UCMR 5 PFAS results. They are informational, not a health determination. Methodology