Water Quality in Lewiston, ID (83501)
EPA violation data for public water systems serving ZIP code 83501.
Active Health Violations
17 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 96% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
37,520
Population
41
Water Systems
98
Violations (5yr)
17
Health-Based
Location
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Water Systems Serving This Area (41)
Lewiston Orchards Irrigation Dist
Lewiston City Of
Clearwater Paper Corporation
Federal Cartridge Company
Clearwater River Casino & Resort
All resolvedClearwater River Casino
Red Pheasant Water Company Llc
1 health-basedCougar Ridge Water & Sewer
Eagles Pointe Subdivision
All resolvedMineral Mountain Rest Area Itd
Waha Glen Water Dist
All resolvedMedley Water System
L W Macmillan
Eaton Mobile Home Court
All resolvedHoo Doo Harvard Water And Sewer Dist
Tammany Alternative Center
2 health-basedLenore Rest Stop Itd
All resolvedPotlatch Corp Headquarters
Atlas Sand And Rock Inc
Red Rock Water Llc
All resolvedScibek Bottled Water
View Point Subdivision
1 health-basedWendell Bryce
Jack Anderson
Lewiston Roundup
9 health-basedWestern States Equipment
Colfax Lds Church
Lewis Clark Dairy
Potlatch Corp Spike Camp
Tom Arnold
Tammany View Baptist Church
Lower Granite Sub Station
Lewiston Hill Port Of Entry Itd
Howards Gun Club Road
Sheep Creek Rest Area Itd
4 health-basedOrogrande Water Assn
Craig Mountain Resort
Usfs Kirkwood Bar Ranch
Hatwai
Marina Addition Subd
Twin City Foods Inc
Contaminants Found
Missed testing deadlines — not a detection of bacteria.
At high levels, nitrate can cause blue baby syndrome in infants.
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
Used to disinfect water — generally safe at regulated levels.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2025
How Does This Compare?
Lewiston (83501) has more violations than 96% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 98.
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.
Reverse Osmosis System
Highly effective at removing heavy metals, dissolved solids, and a wide range of contaminants. Recommended for homes with lead or arsenic concerns.
Targets:Lead, Copper, Arsenic, Mercury, Cadmium
Look for:NSF/ANSI 58 certified
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.