💧 ZIP Water Report

Tap water in Knoxville, IA — ZIP 50001

2 public water systems serving about 25,782 people.

A
Excellent

Water systems serving 50001

Warren Water District
PWSID IA9133701 · serves 20,095 · surface water
0 health-based / 0 total violations (5 yrs)
A
Marion Co. Rural Water District
PWSID IA6342711 · serves 5,687 · groundwater
0 health-based / 2 total violations (5 yrs)
A

Grades summarize EPA SDWIS violation records (last 5 years) and UCMR 5 PFAS results. They are informational, not a health determination. Methodology