Water Quality in Mason City, IA (50456)
EPA violation data for public water systems serving ZIP code 50456.
Active Health Violations
1 health-based violation found in the past 5 years, with at least one still unresolved. Contaminant levels have exceeded federal safety limits. Consider testing your tap water independently.
More violations than 72% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
1,699
Population
12
Water Systems
13
Violations (5yr)
1
Health-Based
Location
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Water Systems Serving This Area (12)
Mason City Water Department
All resolvedWorth Co Interchange 214 Water Supply
All resolvedNora Springs Water Supply
Manly Water Supply
Meservey Water Supply
Alexander Water Dept
All resolvedRowan Muni Water Supply
All resolvedFive Star Cooperative (Scarville)
Rock Falls Lounge
Orchard Water Works
All resolvedNorthwood Country Club
1 health-basedManly Terminal Llc
Contaminants Found
Missed testing deadlines — not a detection of bacteria.
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
Similar to nitrate — harmful to infants at high levels.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2023
How Does This Compare?
Mason City (50456) has more violations than 72% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 13.
Recommended Water Filters
Based on health-based violations detected in your area, these filter types are commonly used to address similar contaminants. Consult your water utility's Consumer Confidence Report for the most current data.
UV Water Purifier
Uses ultraviolet light to neutralize bacteria, viruses, and parasites without chemicals. Ideal for homes with microbial contamination concerns.
Targets:E. coli, Coliform, Giardia, Cryptosporidium
Look for:NSF/ANSI 55 (Class A) certified
Always look for filters certified by NSF International for the specific contaminants you want to remove. This is general educational information, not an endorsement of any specific product.