Tapcensus

Water quality for ZIP code 95409

ZIP 95409 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

Santa Rosa, City of CA4910009 · Community water system · Ground water · Santa Rosa
Serves 178,452 people Rules violated, past 3 years 0 Last sanitary survey Oct 17, 2023 Distance 6.5 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
Brand Water Company
 112 0 2.7 mi
Melita Heights Mutual Water Company
 64 2 3.6 mi
Kinnybrook Mutual Water Company
 48 0 4.0 mi
Lawndale Mutual Water Company
 208 1 4.1 mi
Kenwood Village Water Company (puc)
 1,029 0 4.3 mi
Rincon Valley Mobile Estates
 460 1 4.9 mi
Yulupa Mutual Water Company
 200 0 5.1 mi
Randal's Ranchette Mutual Water Company
 93 2 5.1 mi
Bennett Ridge Mutual Water Company
 439 0 5.1 mi
Sonoma Springs
 37 0 5.4 mi
Rolling Oaks Road Association
 25 0 5.5 mi
End-O-Valley Mutual Water Company
 129 1 5.5 mi
Branger Mutual Water Company, Inc.
 300 1 5.9 mi
Holland Heights Mutual Water Company
 300 0 6.1 mi
Heights Mutual Water Company
 363 0 6.7 mi
Riebli Mutual Water Company
 150 0 6.9 mi
Crystals
Santa Rosa		 48 0 6.9 mi
Sonoma Mountain County Water District
 185 0 7.7 mi
Wilshire Heights Mutual Water Company
 70 0 7.7 mi
Summit View Ranch Mutual Water Co.
 45 0 7.9 mi
Mark West Acres Mwc
 61 0 7.9 mi
Mountain View Mobile Estates, LLC
 250 0 8.1 mi
Michele Mutual Water Company
 93 0 8.2 mi
EL Portal Mobile Estates
 344 1 8.3 mi
James Court Water System
 208 1 8.3 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
Ledson Winery and Vineyards
 128 0 0
Sugarloaf Water System
 42 0 0
Saint Francis Winery-Wild Oak Vineyards
 50 0 0
Valley of the Moon Plaza Shopping Center
 100 0 0
Landmark Vineyards, Ltd.
 175 0 0
Tips Roadside
 86 0 0
Saint Anne's Crossing Winery
 55 0 0
Foley Family Wines Chateau St. Jean
 125 1 1
Kenwood Vineyards and Winery
 50 0 0
Csp-Sugarloaf Ridge State Park
 204 0 0
Adair Kunde, LLC
 250 0 0
Salt & Stone Restaurant
 80 0 0
Deerfield Ranch Winery LLC
 35 0 0
LA Cantera Racquet Club
 75 1 0
Matanzas Creek Winery
 139 0 0
Lasseter Family Winery
 75 0 0
Sonoma Mountain Zen Center
 33 0 0
Petrified Forest
 304 0 0
Hans Fahden Vineyards
 87 1 0
Urj Camp Newman
 705 0 0
Sonoma Botanical Garden
 35 0 0
Triple S Ranch
 130 0 0
Benziger Family Winery
 25 0 0
Fritsch Industrial Park
 36 0 0
Cloverleaf Ranch Summer Camp
 100 0 0
Paradise Ridge Winery
 35 0 0
Csp-Jack London State Historic Park
 130 0 0
Sonoma State U.-Fairfield Osborn Pres
 151 0 0
Imagery Estate Winery
 135 0 0
Arrowood Vineyards & Winery
 44 0 0
Santa Rosa Liquor and Deli
 95 0 0
Safari West
 99 0 0
Pepperwood Environmental Center
 35 0 0
Truck Tops USA
Santa Rosa 		40 0 0
Sutter Santa Rosa Regional Hospital
 1,000 0 0
Adair B.r. Cohn, LLC
 155 0 0
Friedman Brothers Hardware
 95 0 0
United Rentals
 35 0 0
Stripe N Seal
 26 0 0
Bellevue Union Sch Dist-Bellevue School
 380 0 0
Hamel Family Wines
 59 0 0
Michael Lucas Water System
 25 0 0
Saints Peter & Paul Russian Church
 25 0 0
LA Hacienda del Toro
 58 0 0
Jehovah's Witnesses Hall
 650 0 0
Michael Ellis School for Dog Trainers
 31 0 0
Northwest Prep Charter School
 325 1 0
Kendall-Jackson Wine Center
 45 0 0
Campobello
 45 0 0
Gray Water System
 50 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.