Water Quality in Mason City, IA (50475)
EPA violation data for public water systems serving ZIP code 50475.
No Health-Based Violations
None of the 8 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There are3 monitoring/reporting violations (missed testing deadlines), all resolved.
Better than 43% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
1,446
Population
8
Water Systems
3
Violations (5yr)
0
Health-Based
Location
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Water Systems Serving This Area (8)
Mason City Water Department
All resolvedSheffield Water Supply
65 One Stop
Zion Reformed Church
Sahara Club
Lemar Industries
All resolvedSheffield Supper Club Ltd
Galvin Memorial Park
Contaminants Found
Missed testing deadlines — not a detection of bacteria.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2023
How Does This Compare?
Mason City (50475) has more violations than 43% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 3, most of which are monitoring/reporting issues.
Water Filter Recommendations
No contaminant issues detected. For general protection, a basic carbon filter removes common impurities like chlorine and sediment. Look for NSF/ANSI 42 certified products.