Tapcensus

Water quality in Graton, California

Graton is in Sonoma County. 445 active public water systems serve the county; 76 had an EPA violation in the past three years.

Most likely your provider

Downtown Graton Mutual Water System CA4901246 · Community water system · Ground water
Serves 44 people Rules violated, past 3 years 0 Distance 0.2 mi
View system details EPA facility report

Other community water systems in Sonoma County

128 systems, nearest first
SystemServesStatusRules violated, 3 yrDistance
Graton Mutual Water System
 50 0 0.3 mi
Pine Hill Terrace Mobile Home Park
 27 1 0.5 mi
Blue Spruce Mobile Home Park
 90 0 0.7 mi
Belmont Terrace Mutual Water Company
 287 0 2.3 mi
Vinehill Vistas Mutual Water Company
 37 0 2.9 mi
Athena Terrace Mutual Water Company
 47 0 3.0 mi
Forestville Water District
 3,717 1 3.3 mi
Sebastopol, City of
Sebastopol		 7,522 0 3.3 mi
Willowside Mutual Water Company
 528 0 3.4 mi
Fircrest Mutual Water Company
 126 0 4.1 mi
Park Royal Mutual Water Company
 75 0 4.5 mi
Larkin Woods Mutual Water Company
 34 0 4.5 mi
Kelly Mutual Water Company
 135 1 4.8 mi
Occidental Community Services District
 383 0 4.9 mi
Camp Meeker Water System
 1,171 0 5.1 mi
Russian River County Water District
 4,150 0 5.1 mi
Sonoma County Csa 41-Freestone
 90 0 5.3 mi
Alliance Redwoods Conference Grounds
 46 1 5.9 mi
Hilton Mutual Water Company
 36 1 6.1 mi
Lone Pine Mutual Water Company
 65 0 6.1 mi
Noel Heights-Cal Water Service (puc)
 86 0 6.2 mi
Leisure Mobile Home Park
 410 0 6.3 mi
Odd Fellows Recreation Club
 557 0 6.3 mi
Hawkins Water Co-Cal Water Service (puc)
 91 0 6.4 mi
Stonegate Mobile Home Park
 196 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
Graton Commerce Center
 30 0 0
Oak Grove School
 500 1 1
Dutton Ranch Corporation
 75 0 0
Furthermore Wines Water System
 27 0 0
Sebastopol Vineyards
 156 0 0
Manzana Products Company, Inc.
 175 0 0
Mycopia LLC
Sebastopol 		70 0 0
Gold Ridge Pinot Dba Emeritus Vineyards
 26 0 0
Mom's Apple Pie
 40 0 0
Traditional Medicinals, Inc.
 120 0 0
Char Vale Vineyards
 25 0 0
Plumfield Academy School (occidental Rd)
 30 0 0
Dutton Farmworker Housing
 38 0 0
Molino Corner Water System
 100 0 0
Lynmar Winery
 100 0 0
Sonoma West Holdings North Plant
 50 0 0
Vca Forestville Animal Hospital
 26 0 0
Ektimo Vineyards
 57 0 0
Tlc Child & Family Services
 35 0 0
Andy's Produce Market, Inc.
 71 1 1
Crowell King Ridge, LLC
 76 0 0
Horse & Plow Tasting Room
 45 0 0
Sebastopol Charter School
 310 0 0
Russian River Vineyards & Restaurant
 157 0 0
Russian River Winery
 73 0 0
Childkind Laguna Preschool
 42 0 0
Spider Web Ranch
 38 0 0
Azure Acres CD Recovery Center
 30 0 0
Balletto Vineyards
 42 0 0
Farmer Water System
 26 0 0
Boisset de Loach Winery
 33 0 0
Summerfield Waldorf School
 301 0 0
Sunce Winery
 26 0 0
Oak Grove School District Office
 36 0 0
Santa Rosa Golf & Country Club
 250 0 0
Willowside School
 460 1 1
Lieto Water System (reach Chartr School)
 30 0 0
Gray Water System
 50 0 0
Twin Hills School Dist-Apple Blossom Sch
 400 0 0
Olivet Elementary School
 400 2 2
Hook & Ladder Vineyards and Winery
 35 0 0
Campobello
 45 0 0
Humane Society of Sonoma County
 27 0 0
Twin Hills School Dist-Twin Hills School
 400 0 0
Mount Gilead Bible Conference
 64 1 1
Saralee's Vineyard and Tasting Room
 84 0 0
Twin Hills Vineyard
 50 0 0
Martinelli Ranch
 52 0 0
Sonoma West Holdings Industrial Park
 25 0 0
Sequoia Water Company
 100 0 0
All non-community systems
About this data

Water systems are matched to Sonoma County, nearest to Graton 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.

Town locations and ZIP code areas come from U.S. Census Bureau 2020 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.