Tapcensus

Water quality for ZIP code 95430

ZIP 95430 covers Monte Rio 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

Sweetwater Springs Cwd Monte Rio CA4910028 · Community water system · Ground water
Serves 3,531 people Rules violated, past 3 years 0 Last sanitary survey Oct 19, 2021 Distance 1.4 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
Magic Mountain Mutual Water Company
 171 0 1.0 mi
Austin Acres Mutual Water Company
 82 0 1.2 mi
Rancho del Paradiso-Cal Water Svc (puc)
 110 0 1.4 mi
Huckleberry Mutual Water Company
 45 1 1.8 mi
Austin Creek Mutual (springhill)
 150 0 2.0 mi
Sonoma County Mutual Water Company
 40 0 2.4 mi
Redwood Heights Mutual Water Company
 30 1 2.9 mi
Sunrise Mountain Mutual Water Company
 100 0 3.1 mi
Bridgehaven Park
 30 2 3.5 mi
Sonoma County Csa 41-Jenner
 406 0 3.9 mi
Sweetwater Springs Cwd Guerneville
 5,156 0 4.2 mi
Alliance Redwoods Conference Grounds
 46 1 4.3 mi
Armstrong Valley-Cal Water Service (puc)
 539 0 4.7 mi
Noel Heights-Cal Water Service (puc)
 86 0 5.3 mi
Sereno del Mar Water Company (puc)
 375 0 5.3 mi
Camp Meeker Water System
 1,171 0 5.4 mi
Cazadero Water Company, Inc. (puc)
 525 3 5.5 mi
Larkin Woods Mutual Water Company
 34 0 5.7 mi
Odd Fellows Recreation Club
 557 0 6.1 mi
Carmet by the Sea Water Company
 188 0 6.3 mi
Hilton Mutual Water Company
 36 1 6.4 mi
Occidental Community Services District
 383 0 6.5 mi
Russian River County Water District
 4,150 0 7.3 mi
Sonoma County Csa 41-Salmon Creek
 327 0 7.7 mi
Bodega Water Company
 77 0 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
Casini Ranch Campground
 442 0 0
Blue Heron Restaurant
 50 1 1
Duncans Mills Trading Company
 45 0 0
Duncans Mills Camping Club
 127 0 0
Johnson's Beach Resort
 200 0 0
East Austin Creek Mutual Water Company
 32 0 0
Westminster Woods Camp
 18 1 1
Camp Royaneh
 70 0 0
Csp-Goat Rock State Beach
 402 0 0
Cazadero Performing Arts Camp
 301 0 0
Csp-Wrights Beach State Park
 502 0 0
Gurdjieff Foundation
 40 0 0
Csp-Armstrong Redwoods State Reserve
 611 0 0
Korbel Brothers Winery
 296 0 0
Mount Gilead Bible Conference
 64 1 1
Occidental Arts & Ecology Center
 51 2 1
River Bend Resort
 255 0 0
Union Hotel
 350 0 0
Padmasambhava Peace Institute
 28 0 0
Catholic Charities Cyo Camp
 250 0 0
Salmon Creek Middle School
 300 2 0
Fort Ross Vineyard
 100 0 0
Azure Acres CD Recovery Center
 30 0 0
Moshin Vineyards
 30 0 0
Gary Farrell Winery
 106 0 0
Russian River Vineyards & Restaurant
 157 0 0
Crowell King Ridge, LLC
 76 0 0
Ektimo Vineyards
 57 0 0
Dutton Farmworker Housing
 38 0 0
Traditional Medicinals, Inc.
 120 0 0
Vca Forestville Animal Hospital
 26 0 0
Manzana Products Company, Inc.
 175 0 0
Mom's Apple Pie
 40 0 0
Graton Commerce Center
 30 0 0
Plumfield Academy School (occidental Rd)
 30 0 0
Char Vale Vineyards
 25 0 0
Sebastopol Vineyards
 156 0 0
Sonoma Coast Villa
 39 0 0
Thomas George Estates Winery
 25 0 0
Oak Grove School
 500 1 1
Furthermore Wines Water System
 27 0 0
Dutton Ranch Corporation
 75 0 0
Williams Selyem Winery
 25 0 0
Farmer Water System
 26 0 0
Chaos Vineyards, Llc.
 50 0 0
Mycopia LLC
Sebastopol 		70 0 0
Russian River Winery
 73 0 0
Gold Ridge Pinot Dba Emeritus Vineyards
 26 0 0
Gracianna Winery
 64 0 0
Childkind Laguna Preschool
 42 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.