Tapcensus

Water quality in Sea Ranch, California

Sea Ranch 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

Sea Ranch Water Company,the (puc) CA4910007 · Community water system · Surface water
Serves 1,287 people Rules violated, past 3 years 3 Unresolved 1 Last sanitary survey Sep 30, 2025 Distance 0.5 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
Timber Cove County Water District
 190 2 15.8 mi
Cazadero Water Company, Inc. (puc)
 525 3 23.9 mi
Cloverdale, City of
Cloverdale		 8,710 1 24.2 mi
Six Acres Water Company
 66 2 24.3 mi
South Cloverdale Water Company
 90 2 24.4 mi
Rains Creek Water District
 208 0 24.8 mi
West Water Company (puc)
 40 0 25.2 mi
Sunrise Mountain Mutual Water Company
 100 0 25.9 mi
Clear Creek Water Company
 40 0 26.1 mi
Redwood Heights Mutual Water Company
 30 1 26.3 mi
Sonoma County Csa 41-Jenner
 406 0 26.3 mi
Sonoma County Mutual Water Company
 40 0 26.6 mi
Palomino Lakes Mutual Water Co.
 300 0 26.7 mi
Austin Creek Mutual (springhill)
 150 0 27.1 mi
Huckleberry Mutual Water Company
 45 1 27.1 mi
Magic Mountain Mutual Water Company
 171 0 27.8 mi
Austin Acres Mutual Water Company
 82 0 27.9 mi
Bridgehaven Park
 30 2 28.1 mi
Armstrong Valley-Cal Water Service (puc)
 539 0 28.6 mi
Rancho del Paradiso-Cal Water Svc (puc)
 110 0 28.9 mi
Gill Creek Mutual Water Company
 290 0 29.1 mi
California-American Geyserville (puc)
 1,050 0 29.6 mi
Sweetwater Springs Cwd Guerneville
 5,156 0 29.6 mi
Sweetwater Springs Cwd Monte Rio
 3,531 0 29.8 mi
Noel Heights-Cal Water Service (puc)
 86 0 31.5 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
Horicon School
 100 0 0
Stewarts Point Water System
 29 0 0
Camp Liahona Redwoods
 150 0 0
Ratna Ling Retreat
 37 0 0
Csp-Salt Point State Park
 3,513 0 0
Ocean Cove Lodge Bar & Grill
 100 0 0
Sonoma County Parks-Stillwater Cove
 70 1 1
Fort Ross School District
 100 0 0
Timber Cove Inn
 38 0 0
Fort Ross Lodge, LLC
 33 0 0
Csp-Fort Ross State Park
 3,501 0 0
Fort Ross Vineyard
 100 0 0
Padmasambhava Peace Institute
 28 0 0
Lake Sonoma Marina
 51 0 0
Cazadero Performing Arts Camp
 301 0 0
Redwood Empire Sawmill
 80 0 0
U.s. Army Corps-Lake Sonoma Headquarters
 52 0 0
Naco West Russian River Preserve
 263 0 0
Sbragia Winery
 68 0 0
Fritz Winery and Vineyard
 26 0 0
Camp Royaneh
 70 0 0
Bella Vineyards and Wine Caves
 45 0 0
East Austin Creek Mutual Water Company
 32 0 0
Ferrari-Carano Winery
 75 1 1
Asti Winery
 57 0 0
Dutcher Crossing Winery
 40 0 0
Cast Estate Vineyards & Cellars
 50 0 0
Preston Winery
 55 0 0
Zichichi Winery
 41 0 0
Cloverdale Campground
 100 0 0
Csp-Goat Rock State Beach
 402 0 0
North Coast Wine Co.
 39 1 1
E String Cellars
 54 0 0
J. Rickards Winery
 38 0 0
Csp-Armstrong Redwoods State Reserve
 611 0 0
Michel-Schlumberger Fine Wine Estate
 50 0 0
Seghesio Farms
 38 0 0
Chateau Diana
 64 0 0
Truett & Hurst Winery
 35 0 0
Gurdjieff Foundation
 40 0 0
Pedroncelli Winery
 25 0 0
Macdonald Bunkhouse
 30 0 0
Quivira Vineyards
 31 1 0
Casini Ranch Campground
 442 0 0
Duncans Mills Trading Company
 45 0 0
Timber Crest Farms
 26 0 0
Lambert Bridge Winery
Healdsburg 		38 0 0
Blue Heron Restaurant
 50 1 1
Duncans Mills Camping Club
 127 0 0
Rued Vineyards
 26 0 0
All non-community systems
About this data

Water systems are matched to Sonoma County, nearest to Sea Ranch 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.