Water Quality in Janesville, WI (53547)
EPA violation data for public water systems serving ZIP code 53547.
No Health-Based Violations
None of the 25 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There is1 monitoring/reporting violation (missed testing deadlines), all resolved.
Better than 29% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
25
Water Systems
1
Violations (5yr)
0
Health-Based
Location
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Water Systems Serving This Area (25)
Blackhawk Technical College - Central Campus
Rock Cnty Health Care Center
Farm & Fleet
Farm & Fleet Of Dodgeville
All resolvedStation 51 Llc
Bmo Harris
Cambeck Petroleum Corp
Airport Park
Morgan Corp
Blackhawk Technical College -Cts
Riverside Park Splash Pad
First American Credit Union
Hickory Stick
Camp Rotamer
Cecelias Golf Course Clubhouse
Lein Oil Co
Con-Way Central Express Janesville
Harvesters Church
Wisconsin Dolls
Consolidated Freightways Ofc
Quality Grain Systems Inc
Imagi
Blackhawk Tech Decatur Cntr
Janesville Conservation Club
Rock Co Airport 4 (85220)
Contaminants Found
Missed testing deadlines — not a detection of bacteria.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jun 2025
How Does This Compare?
Janesville (53547) has more violations than 29% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 1, 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.