Tapcensus

Water quality in Occidental, California

Occidental 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

Occidental Community Services District CA4900536 · Community water system · Ground water
Serves 383 people Rules violated, past 3 years 0 Last sanitary survey Oct 15, 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
Sonoma County Csa 41-Freestone
 90 0 2.1 mi
Camp Meeker Water System
 1,171 0 2.1 mi
Alliance Redwoods Conference Grounds
 46 1 3.2 mi
Graton Mutual Water System
 50 0 4.2 mi
Bodega Water Company
 77 0 4.3 mi
Downtown Graton Mutual Water System
 44 0 4.3 mi
Larkin Woods Mutual Water Company
 34 0 4.5 mi
Pine Hill Terrace Mobile Home Park
 27 1 4.9 mi
Blue Spruce Mobile Home Park
 90 0 5.0 mi
Belmont Terrace Mutual Water Company
 287 0 5.0 mi
Valley Ford Water Association
 84 3 5.8 mi
Sebastopol, City of
Sebastopol		 7,522 0 5.8 mi
Forestville Water District
 3,717 1 5.8 mi
Fircrest Mutual Water Company
 126 0 6.2 mi
Sweetwater Springs Cwd Monte Rio
 3,531 0 6.3 mi
Noel Heights-Cal Water Service (puc)
 86 0 6.4 mi
Russian River County Water District
 4,150 0 6.8 mi
Vinehill Vistas Mutual Water Company
 37 0 6.9 mi
Kelly Mutual Water Company
 135 1 6.9 mi
Hilton Mutual Water Company
 36 1 7.1 mi
Odd Fellows Recreation Club
 557 0 7.1 mi
Athena Terrace Mutual Water Company
 47 0 7.2 mi
Sereno del Mar Water Company (puc)
 375 0 7.2 mi
Rancho del Paradiso-Cal Water Svc (puc)
 110 0 7.5 mi
Willowside Mutual Water Company
 528 0 7.5 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
Catholic Charities Cyo Camp
 250 0 0
Union Hotel
 350 0 0
Salmon Creek Middle School
 300 2 0
Occidental Arts & Ecology Center
 51 2 1
Azure Acres CD Recovery Center
 30 0 0
Dutton Farmworker Housing
 38 0 0
Farmer Water System
 26 0 0
Westminster Woods Camp
 18 1 1
Plumfield Academy School (occidental Rd)
 30 0 0
Char Vale Vineyards
 25 0 0
Mount Gilead Bible Conference
 64 1 1
Graton Commerce Center
 30 0 0
Oak Grove School
 500 1 1
Manzana Products Company, Inc.
 175 0 0
Twin Hills School Dist-Apple Blossom Sch
 400 0 0
Lieto Water System (reach Chartr School)
 30 0 0
Gold Ridge Pinot Dba Emeritus Vineyards
 26 0 0
Ektimo Vineyards
 57 0 0
Sonoma West Holdings North Plant
 50 0 0
Traditional Medicinals, Inc.
 120 0 0
Dutton Ranch Corporation
 75 0 0
Sonoma Coast Villa
 39 0 0
Sebastopol Vineyards
 156 0 0
Mycopia LLC
Sebastopol 		70 0 0
Horse & Plow Tasting Room
 45 0 0
Tlc Child & Family Services
 35 0 0
Furthermore Wines Water System
 27 0 0
Molino Corner Water System
 100 0 0
Mom's Apple Pie
 40 0 0
Andy's Produce Market, Inc.
 71 1 1
Crowell King Ridge, LLC
 76 0 0
Vca Forestville Animal Hospital
 26 0 0
Sebastopol Charter School
 310 0 0
Russian River Vineyards & Restaurant
 157 0 0
Twin Hills School Dist-Twin Hills School
 400 0 0
Lynmar Winery
 100 0 0
Valley Ford Hotel
 60 0 0
Twin Hills Vineyard
 50 0 0
Balletto Vineyards
 42 0 0
Russian River Winery
 73 0 0
Sequoia Water Company
 100 0 0
Childkind Laguna Preschool
 42 0 0
Bodega Bay Oyster Company
 25 0 0
Sonoma West Holdings Industrial Park
 25 0 0
Spider Web Ranch
 38 0 0
Jjapt Bloomfield
 37 0 0
River Bend Resort
 255 0 0
Blue Heron Restaurant
 50 1 1
Gravenstein School District-Hillcrest
 289 1 1
Santa Rosa Golf & Country Club
 250 0 0
All non-community systems
About this data

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