Tap water in Thornton, CO — ZIP 80229
2 public water systems serving about 1,513,465 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 80229
Denver Water Board
PWSID CO0116001 · serves 1,287,000 ·
surface water
0 health-based / 34 total violations (5 yrs)
Thornton City Of
PWSID CO0101150 · serves 226,465 ·
surface water
0 health-based / 7 total violations (5 yrs)
· PFAS up to 12.6 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