💧 ZIP Water Report

Tap water in Mason City, IA — ZIP 50401

1 public water system serving about 27,338 people.

A
Excellent

Water systems serving 50401

Mason City Water Department
PWSID IA1750048 · serves 27,338 · groundwater
0 health-based / 1 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