Water Quality in Mason City, IA (50482)
EPA violation data for public water systems serving ZIP code 50482.
No Health-Based Violations
None of the 19 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.
748
Population
19
Water Systems
3
Violations (5yr)
0
Health-Based
Location
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Water Systems Serving This Area (19)
Mason City Water Department
All resolvedVentura Water Works
All resolvedHarbor Inn
Ventura High School
Reel Inn
Ventura Grade School
Viking Inn
Willow Inn Camp Ground
Deer Valley Lodge
All resolvedRedeemer Lutheran Church
Bob'S 66
Clear Water Campground
Colony Inn
Mr Shirley Coe
Robert Ollenburg Well
Lucille'S Place
Regular Baptist Campground
Kaster Cove
Grimms-United Methodist Church
Contaminants Found
Missed testing deadlines — not a detection of bacteria.
At high levels, nitrate can cause blue baby syndrome in infants.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2025
How Does This Compare?
Mason City (50482) 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.