Tapcensus

Water quality for ZIP code 95492

ZIP 95492 covers Windsor and Larkfield-Wikiup in Sonoma County, California, one of 38 ZIP codes in the county. 445 active public water systems serve the county; 76 had an EPA violation in the past three years.

Most likely your provider

Windsor, Town of CA4910017 · Community water system · Ground water
Serves 25,561 people Rules violated, past 3 years 0 Last sanitary survey Aug 30, 2022 Distance 1.8 mi

Your location is within the outer bounds of this system's EPA service area.

View system details EPA facility report

Other community water systems in Sonoma County

128 systems, nearest first
SystemServesStatusRules violated, 3 yrDistance
Shamrock Mobile Home Park
 188 1 2.0 mi
Evergreen Mobile Estates
 65 0 2.3 mi
Mobile Home Estates
 403 2 2.4 mi
Colonial Park
 342 0 2.5 mi
Stonegate Mobile Home Park
 196 0 2.7 mi
Athena Terrace Mutual Water Company
 47 0 3.7 mi
Vinehill Vistas Mutual Water Company
 37 0 3.9 mi
California-American Larkfield (puc)
 7,911 0 4.1 mi
Forestville Water District
 3,717 1 5.2 mi
Mark West Meadows Mutual Water
 31 1 5.4 mi
Michele Mutual Water Company
 93 0 5.5 mi
Russian River Mutual Water Co.
 87 0 5.6 mi
Russian River County Water District
 4,150 0 5.7 mi
Mark West Acres Mwc
 61 0 5.7 mi
Wilshire Heights Mutual Water Company
 70 0 6.0 mi
Blue Spruce Mobile Home Park
 90 0 6.1 mi
Loch Haven Mutual Water Company
 26 0 6.2 mi
Sonoma County Csa 41-Fitch Mountain
 1,115 1 6.4 mi
Park Royal Mutual Water Company
 75 0 6.4 mi
Willowside Mutual Water Company
 528 0 6.5 mi
Pine Hill Terrace Mobile Home Park
 27 1 6.5 mi
Riebli Mutual Water Company
 150 0 6.7 mi
Hilton Mutual Water Company
 36 1 6.7 mi
Downtown Graton Mutual Water System
 44 0 6.9 mi
Healdsburg, City of
Healdsburg		 10,972 0 6.9 mi
All 129 community water systems in Sonoma County
Non-community systems in Sonoma County (316: schools, campgrounds, workplaces, restaurants)

These systems serve places you visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Bricoleur Vineyards
 57 0 0
Copain Wine Cellars
 26 0 0
LA Crema Winery
 75 0 0
Sonoma County Parks-Riverfront Park
 50 0 0
Saralee's Vineyard and Tasting Room
 84 0 0
Rochioli Winery
 26 0 0
Gracianna Winery
 64 0 0
Vino Farms, Inc. Preston Ranch
 72 0 0
Chaos Vineyards, Llc.
 50 0 0
Hop Kiln Winery
 150 0 0
Williams Selyem Winery
 25 0 0
Martinelli Ranch
 52 0 0
Thomas George Estates Winery
 25 0 0
Kendall-Jackson Wine Center
 45 0 0
J Vineyards & Winery
 50 0 0
Macrostie Winery and Vineyard
 150 0 0
Rodney Strong Vineyards
 150 0 0
Bucher Water Company
 52 1 1
Merriam Winery
 50 0 0
Flowers Winery
 60 0 0
Roth Winery
 25 0 0
Bacigalupi Vineyards
 49 0 0
Hook & Ladder Vineyards and Winery
 35 0 0
Chalk Hill Winery
 25 0 0
Aperture Cellars
 33 0 0
Childkind Laguna Preschool
 42 0 0
Gary Farrell Winery
 106 0 0
Sunce Winery
 26 0 0
Moshin Vineyards
 30 0 0
Sutter Santa Rosa Regional Hospital
 1,000 0 0
Russian River Winery
 73 0 0
Olivet Elementary School
 400 2 2
Foppiano Vineyards
 25 0 0
Boisset de Loach Winery
 33 0 0
Matrix Winery
 30 0 0
West Side Union School District
 175 0 0
Northwest Prep Charter School
 325 1 0
Capital Lumber Company
 50 0 0
Gray Water System
 50 0 0
Spider Web Ranch
 38 0 0
Overshine Wine Company
 40 0 0
Sonoma County Parks-Vet. Memorial Beach
 252 0 0
Russian River Vineyards & Restaurant
 157 0 0
Campobello
 45 0 0
Crowell King Ridge, LLC
 76 0 0
Vca Forestville Animal Hospital
 26 0 0
Paradise Ridge Winery
 35 0 0
Cloverleaf Ranch Summer Camp
 100 0 0
Summerfield Waldorf School
 301 0 0
Mom's Apple Pie
 40 0 0
All non-community systems
About this data

Water systems are matched to Sonoma County, the county this ZIP code lies in, nearest to the ZIP code's centre first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau place files.

ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA files.

Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The California records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.