Tapcensus

Water quality for ZIP code 95401

ZIP 95401 covers Santa Rosa 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

Park Royal Mutual Water Company CA4900553 · Community water system · Ground water
Serves 75 people Rules violated, past 3 years 0 Last sanitary survey Aug 7, 2024 Distance 0.9 mi
View system details EPA facility report

Other community water systems in Sonoma County

128 systems, nearest first
SystemServesStatusRules violated, 3 yrDistance
Willowside Mutual Water Company
 528 0 1.1 mi
Leisure Mobile Home Park
 410 0 2.7 mi
Athena Terrace Mutual Water Company
 47 0 3.4 mi
Roseland Mobile Home Park
 130 0 3.4 mi
Pine Hill Terrace Mobile Home Park
 27 1 3.5 mi
Hawkins Water Co-Cal Water Service (puc)
 91 0 3.6 mi
Sebastopol, City of
Sebastopol		 7,522 0 3.9 mi
Belmont Terrace Mutual Water Company
 287 0 3.9 mi
Blue Spruce Mobile Home Park
 90 0 3.9 mi
Vinehill Vistas Mutual Water Company
 37 0 3.9 mi
Downtown Graton Mutual Water System
 44 0 4.2 mi
Graton Mutual Water System
 50 0 4.2 mi
Stonegate Mobile Home Park
 196 0 4.3 mi
James Court Water System
 208 1 4.3 mi
Fircrest Mutual Water Company
 126 0 4.4 mi
California-American Larkfield (puc)
 7,911 0 4.5 mi
Kelly Mutual Water Company
 135 1 4.5 mi
Crystals
Santa Rosa		 48 0 4.7 mi
Colonial Park
 342 0 4.9 mi
Mobile Home Estates
 403 2 5.1 mi
Santa Rosa, City of
Santa Rosa		 178,452 0 5.1 mi
Robin Way Water System
 66 0 5.2 mi
Sunset Park Community
 157 1 5.2 mi
Mountain View Mobile Estates, LLC
 250 0 5.3 mi
EL Portal Mobile Estates
 344 1 5.5 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
Campobello
 45 0 0
Gray Water System
 50 0 0
Summerfield Waldorf School
 301 0 0
Willowside School
 460 1 1
Oak Grove School District Office
 36 0 0
Olivet Elementary School
 400 2 2
Santa Rosa Golf & Country Club
 250 0 0
Spider Web Ranch
 38 0 0
Northwest Prep Charter School
 325 1 0
Sunce Winery
 26 0 0
Boisset de Loach Winery
 33 0 0
Hook & Ladder Vineyards and Winery
 35 0 0
Balletto Vineyards
 42 0 0
Humane Society of Sonoma County
 27 0 0
Michael Lucas Water System
 25 0 0
Martinelli Ranch
 52 0 0
Lynmar Winery
 100 0 0
Childkind Laguna Preschool
 42 0 0
Molino Corner Water System
 100 0 0
Andy's Produce Market, Inc.
 71 1 1
Russian River Winery
 73 0 0
Tlc Child & Family Services
 35 0 0
LA Crema Winery
 75 0 0
Mycopia LLC
Sebastopol 		70 0 0
Sebastopol Charter School
 310 0 0
Sonoma West Holdings North Plant
 50 0 0
Dutton Ranch Corporation
 75 0 0
Furthermore Wines Water System
 27 0 0
Gold Ridge Pinot Dba Emeritus Vineyards
 26 0 0
Saralee's Vineyard and Tasting Room
 84 0 0
Horse & Plow Tasting Room
 45 0 0
Sebastopol Vineyards
 156 0 0
Sutter Santa Rosa Regional Hospital
 1,000 0 0
Oak Grove School
 500 1 1
Kendall-Jackson Wine Center
 45 0 0
Fritsch Industrial Park
 36 0 0
Mom's Apple Pie
 40 0 0
Graton Commerce Center
 30 0 0
Vca Forestville Animal Hospital
 26 0 0
Traditional Medicinals, Inc.
 120 0 0
Manzana Products Company, Inc.
 175 0 0
Cloverleaf Ranch Summer Camp
 100 0 0
Sonoma West Holdings Industrial Park
 25 0 0
Char Vale Vineyards
 25 0 0
Plumfield Academy School (occidental Rd)
 30 0 0
Sequoia Water Company
 100 0 0
Paradise Ridge Winery
 35 0 0
Saints Peter & Paul Russian Church
 25 0 0
Ektimo Vineyards
 57 0 0
Bellevue Union Sch Dist-Bellevue School
 380 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.