Water Quality in Mason City, IA (50428)
EPA violation data for public water systems serving ZIP code 50428.
Active Health Violations
3 health-based violations 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 76% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
9,071
Population
34
Water Systems
17
Violations (5yr)
3
Health-Based
Location
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Water Systems Serving This Area (34)
Mason City Water Department
All resolvedClear Lake Water Department
Nanco, Incorporated
Bell Harbor
All resolvedPancake Inn
Clear Lake Bakery Inc.
Valley Country Cafe
The Ritz Club
P.M. Park Trustees-East
1 health-basedWoerner Oil Co, Inc
Clear Lake Baptist Church
Kuns Trailer Ranch
The Market At Oakwood
1 health-basedMuskie Lounge & Kaster'S Kove
Venerian Village
Andrews Prestressed Concrete-Plant
Andrews Prestressed Concrete-Office
Oak Hills Par 30 Golf Course
All resolvedOakwood Rv Park
Bendix Mobile Home
Twin Oak Camp Ground
1 health-basedHanford Community Church
Camp Joy Hollow
Rena Lady
Long Beach Mobile Park
Grandview Circle Water Association
Clear Lake Bp Llc
Northern Trails Aea Preschool
Lakeshore Water Association
All resolvedJim Oleson Privately Owned Wel
Oakridge Homeowners Association
All resolvedCamp Gaywood Island House Well
Camp Tanglefoot
Clear Lake State 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 (50428) has more violations than 76% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 17.
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.