Water Quality in Grass Valley, CA (95945)
EPA violation data for public water systems serving ZIP code 95945.
Active Health Violations
2 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 60% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
27,470
Population
48
Water Systems
7
Violations (5yr)
2
Health-Based
Location
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Water Systems Serving This Area (48)
Truckee-Donner Pud, Main
Nevada Id - E. George, Banner Mountain
Nevada Id - Loma Rica
Nevada Id - Lake Wildwood
Nevada Id - North Auburn
Nevada Id - Lake Of Pines
City Of Grass Valley
Nevada Id - Cascade Shores
Nevada Irrigation District
Mother Truckers Water System
Nevada Irrigation District
Tnf-Aspen Creek/Pass Creek
Wood Camp - Water System
Nid Scotts Flat Lake Reservoir
Sierra City Water Works, Inc.
All resolvedPeninsula Campground Water System
Rollins Lake Resort, Long Ravine
Donner Mine Camp Inc
All resolvedNevada Id - Smartsville
Country Store
Heauser'S Plaza Center
Bethel Church
All resolvedBohemia Company
Mission Beth El Church
Mission Bethel Church
Dollar General Store - Weed
Rollins Lakeside Resort
1 health-basedLearning Unlimited
Creative Kid
Kentucky Flat Headstart Schl Water
Creative Kids Preschool Water System
Animal Place
North Star Academy Water
Ncsos, Mccourtney Rd.
1 health-basedNid Rollins Lake Water
Nevada Union High School Water
Malakoff State Historic Park
Scharer Industrial Park
Wolf Mountain Indian Camp Wat
Marble Mountain Studs, Inc.
Willow Tree Restaurant Water
Csp Malakoff Diggins
Nid - Kenwood Estates (Abandoned)
Nid - Willaura Acres
Nevada Id - Sherwood Forest
Nevada Id - Penn Valley
Nevada Id - Green
Nevada Id - Snow Mountain
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?
Grass Valley (95945) has more violations than 60% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 7.
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.