Water Quality in Santa Rosa, CA (94574)
EPA violation data for public water systems serving ZIP code 94574.
Active Health Violations
7 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 84% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
7,457
Population
72
Water Systems
41
Violations (5yr)
7
Health-Based
Location
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Water Systems Serving This Area (72)
Santa Rosa, City Of
Napa, City Of
Petaluma, City Of
Rohnert Park, City Of
All resolvedAmerican Canyon, City Of
Phelps Vineyards
St. Helena, City Of
3 health-basedCastello Di Amorosa
1 health-basedAdventist Health - St. Helena Hospital
Raymond Vineyard & Cellar
1 health-basedSutter Home Winery Inc.
Sutter Home Winery
Beringer Wine World
Vinter S Village
Bella Union Winery
All resolvedThe Ranch Winery
Tpwc Dba The Prisoner Wine Company
Rombauer Vineyards
All resolvedIntermountain Sports Camp
Nickel & Nickel Winery
Milat Winery
Newton Vineyard
St. Clement Vineyards Inc.
Chateau Boswell
Spindrift Marina
All resolvedRound Hill Winery
Cairdean Winery
1 health-basedWhite Sulphur Springs Resort
Cathiard Family Estate Winery
Sutter Home Winery Inc. Trinchero Cc
Cal Fire Sonoma-Lake-Napa Unit Hq
Titus Winery
Dakota Shy Winery
All resolvedVineland Mobilehome Park
Nichelini Winery
Christian Brothers
Turley Wine Cellars
Chappellet Winery
All resolvedNapa Valley Reserve Water System
Robert Keenan Winery
All resolvedGoldeneye Winery
Whitehall Lane Winery
All resolvedTrinchero Winery
Ehlers Estate
Fantesca Winery
All resolvedPine Knoll Mutual Water Co
Wheeler Farms Winery
All resolvedBehrens Family Winery
All resolvedMaxville Lake Winery
Quintessa Winery Water System
Glass Mt Trailer Park
Pestoni Family Estate Winery
Somerston Winery
1 health-basedLmr Main Street Partners Llc
Hunnicutt Winery
All resolvedVailima Estates Mutual Water
All resolvedMerryvale Vineyards
Pcsh, Llc
Kathryn Hall Winery
Nine Suns Winery
Alpha Omega Winery
St. Helena Purlieu Llc
Duckhorn Vineyards
Maggy Hawk Tasting Room
Miner Family Winery
Upper Valley Disposal Service
Markham Vineyards
Realm Estate
Vineyard 29
Sierra Sunrise Dba Terra D'Oro/Montevina
Vineyard 7 & 8
All resolvedDana Estates
Contaminants Found
Missed testing deadlines — not a detection of bacteria.
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
A naturally occurring element that can cause cancer and other health effects at high levels.
At high levels, nitrate can cause blue baby syndrome in infants.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jul 2025
How Does This Compare?
Santa Rosa (94574) has more violations than 84% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 41.
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
Activated Carbon Filter
Excellent for removing chlorine, chloramine, and disinfection byproducts like THMs and HAAs. Available as pitcher filters, countertop, or under-sink units.
Targets:THMs, HAAs, Chlorine, Chloramine, Taste & Odor
Look for:NSF/ANSI 42 & 53 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.