Tap water in Herculaneum, MO — ZIP 63028
5 public water systems serving about 40,100 people. PFAS "forever chemicals" have been detected here.
B
Good
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 63028
Festus Pws
PWSID MO6010276 · serves 13,000 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 9.2 ppt
Clark County Cons Pwsd 1
PWSID MO2024138 · serves 8,000 ·
groundwater
0 health-based / 2 total violations (5 yrs)
Jefferson County Pwsd 5
PWSID MO6024296 · serves 8,000 ·
groundwater
0 health-based / 2 total violations (5 yrs)
Jefferson County Pwsd 7
PWSID MO6024299 · serves 6,100 ·
groundwater
0 health-based / 2 total violations (5 yrs)
Herculaneum Pws
PWSID MO6010359 · serves 5,000 ·
surface water
0 health-based / 1 total violations (5 yrs)
· PFAS up to 9.1 ppt
Grades summarize EPA SDWIS violation records (last 5 years) and UCMR 5 PFAS results. They are informational, not a health determination. Methodology