Tap water in Hempstead (T), NY — ZIP 11580
2 public water systems serving about 340,000 people. PFAS "forever chemicals" have been detected here.
F
Failing
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 11580
Liberty Utilities New York - Lynbrook
PWSID NY2902835 · serves 220,000 ·
groundwater
5 health-based / 5 total violations (5 yrs)
· PFAS up to 6.3 ppt — above federal limit
Wa Of Western Nassau
PWSID NY2902830 · serves 120,000 ·
groundwater
0 health-based / 0 total violations (5 yrs)
· PFAS up to 10 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