Water Quality in Houghton, MI (49931)
EPA violation data for public water systems serving ZIP code 49931.
No Health-Based Violations
None of the 28 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There are18 monitoring/reporting violations (missed testing deadlines), all resolved.
Better than 77% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
10,475
Population
28
Water Systems
18
Violations (5yr)
0
Health-Based
Location
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Water Systems Serving This Area (28)
Houghton
All resolvedPortage Township
All resolvedMillpointe Of Hartland
Isle Royale-Rock Harbor
Portage Lake Golf Course
Portage Lake Golf Club
Dodgeville
Ford Forestry Center
All resolvedPortage Lake Golf Course - Mtu
Isle Royale - Windigo
All resolvedSchmidt'S Corner Bar
All resolvedLa Catrina Cocina Mexicana
All resolvedCopper Country Inn 2
Isle Royale - Mott Island
Copper Country Inn
Vacationland Motel #1
Agate Beach Campground
Mikes Bar
Houghton Citgo Station
Mike'S Bar
Aqua Log Cabins - Black Bear Inc.
Terrace Edge Cabins
Holiday Motel
Portage Lake Cabins
Keweenaw Waterway Resort
U.P. Power
Daisy Farm
Pilgrim Terrace Trailor Court
Contaminants Found
Missed testing deadlines — not a detection of bacteria.
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
Used to disinfect water — generally safe at regulated levels.
Annual water quality report delivery requirement.
At high levels, nitrate can cause blue baby syndrome in infants.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2025
How Does This Compare?
Houghton (49931) has more violations than 77% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 18, 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.