Tapcensus

Water quality for ZIP code 95444

ZIP 95444 covers Graton 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

Graton Mutual Water System CA4901221 · Community water system · Ground water
Serves 50 people Rules violated, past 3 years 0 Last sanitary survey Jul 23, 2025 Distance under 0.1 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
Downtown Graton Mutual Water System
 44 0 0.2 mi
Pine Hill Terrace Mobile Home Park
 27 1 0.7 mi
Blue Spruce Mobile Home Park
 90 0 1.0 mi
Belmont Terrace Mutual Water Company
 287 0 2.2 mi
Sebastopol, City of
Sebastopol		 7,522 0 3.2 mi
Vinehill Vistas Mutual Water Company
 37 0 3.2 mi
Athena Terrace Mutual Water Company
 47 0 3.3 mi
Forestville Water District
 3,717 1 3.5 mi
Willowside Mutual Water Company
 528 0 3.5 mi
Fircrest Mutual Water Company
 126 0 4.0 mi
Larkin Woods Mutual Water Company
 34 0 4.5 mi
Occidental Community Services District
 383 0 4.6 mi
Kelly Mutual Water Company
 135 1 4.7 mi
Park Royal Mutual Water Company
 75 0 4.7 mi
Camp Meeker Water System
 1,171 0 4.9 mi
Sonoma County Csa 41-Freestone
 90 0 5.0 mi
Russian River County Water District
 4,150 0 5.3 mi
Alliance Redwoods Conference Grounds
 46 1 5.8 mi
Lone Pine Mutual Water Company
 65 0 6.0 mi
Hilton Mutual Water Company
 36 1 6.2 mi
Noel Heights-Cal Water Service (puc)
 86 0 6.2 mi
Leisure Mobile Home Park
 410 0 6.4 mi
Odd Fellows Recreation Club
 557 0 6.5 mi
Hawkins Water Co-Cal Water Service (puc)
 91 0 6.5 mi
Roseland Mobile Home Park
 130 0 7.2 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
Graton Commerce Center
 30 0 0
Oak Grove School
 500 1 1
Dutton Ranch Corporation
 75 0 0
Char Vale Vineyards
 25 0 0
Mycopia LLC
Sebastopol 		70 0 0
Gold Ridge Pinot Dba Emeritus Vineyards
 26 0 0
Plumfield Academy School (occidental Rd)
 30 0 0
Manzana Products Company, Inc.
 175 0 0
Furthermore Wines Water System
 27 0 0
Sebastopol Vineyards
 156 0 0
Dutton Farmworker Housing
 38 0 0
Molino Corner Water System
 100 0 0
Sonoma West Holdings North Plant
 50 0 0
Mom's Apple Pie
 40 0 0
Traditional Medicinals, Inc.
 120 0 0
Tlc Child & Family Services
 35 0 0
Lynmar Winery
 100 0 0
Andy's Produce Market, Inc.
 71 1 1
Ektimo Vineyards
 57 0 0
Vca Forestville Animal Hospital
 26 0 0
Horse & Plow Tasting Room
 45 0 0
Sebastopol Charter School
 310 0 0
Crowell King Ridge, LLC
 76 0 0
Azure Acres CD Recovery Center
 30 0 0
Russian River Vineyards & Restaurant
 157 0 0
Russian River Winery
 73 0 0
Farmer Water System
 26 0 0
Childkind Laguna Preschool
 42 0 0
Spider Web Ranch
 38 0 0
Balletto Vineyards
 42 0 0
Lieto Water System (reach Chartr School)
 30 0 0
Twin Hills School Dist-Apple Blossom Sch
 400 0 0
Boisset de Loach Winery
 33 0 0
Summerfield Waldorf School
 301 0 0
Oak Grove School District Office
 36 0 0
Santa Rosa Golf & Country Club
 250 0 0
Willowside School
 460 1 1
Sunce Winery
 26 0 0
Gray Water System
 50 0 0
Olivet Elementary School
 400 2 2
Twin Hills School Dist-Twin Hills School
 400 0 0
Hook & Ladder Vineyards and Winery
 35 0 0
Campobello
 45 0 0
Humane Society of Sonoma County
 27 0 0
Mount Gilead Bible Conference
 64 1 1
Twin Hills Vineyard
 50 0 0
Salmon Creek Middle School
 300 2 0
Sonoma West Holdings Industrial Park
 25 0 0
Sequoia Water Company
 100 0 0
Union Hotel
 350 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.