Tapcensus

California

Mendocino County drinking water quality

148 active public water systems serve 82,992 people in Mendocino County. 125 are compliant, 23 had at least one EPA violation in the past three years, 1 is a designated serious violator, and 11 carry a health flag.

Active systems 148 42 community systems
People served 83K by public water systems
Systems with violations 23 16% of active systems, past 3 years
Serious violators 1 11 systems carry a health flag

Needs attention

Whale Gulch School CA2300847 · Non-Transient non-community system · Serves 60 2 rules violated in the past three years. Unresolved: Lead and Copper Rule and Lead and Copper Rule Revisions.
Fort Bragg, City of CA2310001 · Fort Bragg · Community water system · Serves 7,117 1 rule violated in the past three years. Unresolved: Lead and Copper Rule Revisions.
Rogina Water Company Inc. CA2310002 · Community water system · Serves 2,554 1 rule violated in the past three years. Unresolved: Lead and Copper Rule Revisions.
Potter Valley School District CA2300755 · Non-Transient non-community system · Serves 309 1 rule violated in the past three years. Unresolved: Surface Water Treatment Rule.
Irish Beach Water District CA2310012 · Community water system · Serves 254 1 rule violated in the past three years. Unresolved: Lead and Copper Rule Revisions.
Elk County Water District CA2300514 · Community water system · Serves 207 1 rule violated in the past three years. Unresolved: Lead and Copper Rule Revisions.
City of 10,000 Buddhas CA2300731 · Ukiah · Community water system · Serves 200 1 rule violated in the past three years. Unresolved: Lead and Copper Rule Revisions.
Creekside Cabins & RV Resort CA2300717 · Community water system · Serves 124 2 rules violated in the past three years. Unresolved: Lead and Copper Rule and Lead and Copper Rule Revisions.
Luna Trattoria CA2301009 · Transient non-community system · Serves 120 1 rule violated in the past three years. Unresolved: Surface Water Treatment Rule.
Yokayo Tribe of Indians CA2300837 · Community water system · Serves 75 2 rules violated in the past three years. Unresolved: Lead and Copper Rule and Lead and Copper Rule Revisions.

1 more systems with a serious violator or health flag designation are in the lists below.

Community water systems

42 systems, largest first
SystemServesStatusRules violated, 3 yrUnresolved
Ukiah, City of
Ukiah 		16,067 1 1
Fort Bragg, City of
Fort Bragg 		7,117 1 1
Willits, City of
Willits 		6,175 0 0
Millview County Water District
 5,500 0 0
Redwood Valley County Water District
 5,200 0 0
Willow County Water District
 3,797 1 0
Brooktrails Township Csd
 3,632 0 0
North Gualala Water Company
 3,508 0 0
Rogina Water Company Inc.
 2,554 1 1
Laytonville County Water District
 1,152 0 0
Hopland Public Utility District
 1,076 0 0
Calpella County Water District
 548 0 0
Point Arena Water Works
 459 1 1
Pine Mountain Mutual Water Co.
 310 2 1
Dolphin Isle Marina
 280 0 0
Woodside RV Park
 280 2 0
Ridgewood Water System
 265 0 0
Irish Beach Water District
 254 1 1
Ocean's Edge Estates
 250 0 0
River Estates Mutual Water Company
 250 1 1
Elk County Water District
 207 1 1
City of 10,000 Buddhas
Ukiah 		200 1 1
Caspar South Service Company
 188 0 0
Surfwood Mutual Water Corporation
 160 0 0
Woods, the (mendocino)
 153 0 0
Creekside Cabins & RV Resort
 124 2 2
Meadow Estates Mutual
 100 0 0
Lake View Mutual Water Co.
 90 0 0
Bella Shores Mobile Home Park
 80 0 0
Hills Ranch Mutual Water Company
 79 0 0
Shorelands Road & Water Company
 78 0 0
Yokayo Tribe of Indians
 75 2 2
Westport County Water District
 70 0 0
Holly Ranch Village
 50 0 0
Seafair Road and Water Company
 50 0 0
Branscomb Mobile Home Park
 42 3 2
Point Cabrillo Highlands
 42 0 0
Little Lake Mobile Home Park
 38 0 0
Big River Vista Mutual Water Company
 36 0 0
Point of View Mutual Water CO
 36 0 0
Covelo Mobile Home Park
 30 0 0
Albion Mutual Water Company
 26 1 1
Non-community systems (106: schools, campgrounds, workplaces, restaurants)

These systems serve places people visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Csp-Van Damme State Park
 2,004 0 0
U.s. Army Corps-Lake Mendo (bushay Site)
 2,000 0 0
U.s. Army Corps-Lake Mendo (kyen Cmpgrd)
 1,500 0 0
Csp-Mackerricher State Park
 1,416 0 0
Mendocino School District Mendocino
 579 0 0
Tesoro 68137
 508 0 0
Csp-Standish Hickey State Rec Area
 503 0 0
Csp-Mendocino Headlands-Sea Arch
 500 0 0
Mendocino County Fairgrounds
 500 0 0
Csp-Pt. Cabrillo Light Station Shp
 430 0 0
Albion River Campground
 425 0 0
Wente Scout Reservation
 422 0 0
Csp-Manchester State Park
 420 0 0
Csp-Mendocino Woodlands
 400 0 0
Moss Cove Rest Stop (caltrans)
 400 0 0
Csp-Westport State Beach
 370 0 0
Hidden Pines Campground
 362 0 0
Anderson Valley Elementary School
 350 0 0
Camp Mendocino
 321 0 0
Potter Valley School District
 309 1 1
Anderson Valley High School
 300 0 0
Empire Rest Stop (caltrans)
 300 0 0
Irvine Lodge Rest Stop (caltrans)
 300 0 0
U.s. Army Corps-Lake Mendo (pomo Site)
 300 0 0
Round Valley Elementary School
 289 1 1
Camp Navarro
 284 0 0
Csp-Mendocino Headlands Ford House
 275 0 0
Manchester Beach KOA
 273 0 0
Green Acres Trailer Park
 256 0 0
Csp-Hendy Woods State Park
 236 0 0
The Peg House
 220 0 0
Flight Ridge
 206 0 0
Black Oak Facility
 200 0 0
Maccallum House Inn
 200 0 0
Pomo Campground
 200 1 0
U.s. Army Corps-Lake Mendo (marina Site)
 200 0 0
Round Valley High School
 186 0 0
Pattersons Pub
 160 0 0
Albion Field Station
 154 0 0
Stanford Inn by the Sea
 153 0 0
Lemons' Market
 150 0 0
Mendocino Coast Botanical Gardens
Fort Bragg 		150 0 0
Ray's Station Winery
 134 0 0
Trillium Cafe and Inn
 129 0 0
Fetzer Vineyards
 126 0 0
Luna Trattoria
 120 1 1
Navarro Vineyards
 112 0 0
Cdf-Chamberlain Creek Conservation Camp
 110 1 1
Green Real Estate Enterprises LLC
 108 0 0
Frankies Pizza
 102 0 0
Cafe Beaujolais
 100 0 0
Mendocino Cove
 100 0 0
Norcal Gasoline
Fort Bragg 		100 0 0
Little River Inn
 95 0 0
Leisure Time RV Park
 92 0 0
The Madrones
 91 0 0
Leggett Valley School
 90 0 0
Orr Springs Resort
 84 0 0
Cleone Campground and Grocery
 81 0 0
Inn at Schoolhouse Creek
 77 0 0
Eel River Charter School
 75 0 0
Manchester Union Elementary School
 75 0 0
Goldeneye Winery
 63 0 0
Hill House at Trailborn Mendocino
 62 0 0
Flow Restaurant
 61 0 0
Lighthouse Pointe
 61 0 0
Whale Gulch School
 60 2 2
Seafoam Lodge
 56 0 0
Cdf-Parlin Fork Conservation Camp
 55 0 0
Sea Rock Inn
 54 0 0
Heritage House
 50 0 0
Mendocino Hotel
 50 0 0
Montessori del Mar Learning Center
Fort Bragg 		50 1 1
The Land
 50 0 0
Mendocino Art Center
 48 0 0
Mendocino Coast Lodge
 48 0 0
Wildwood Campground
 48 0 0
Anderson Valley Brewing Company
 47 1 0
Harvest at Mendosas
 45 0 0
Redwoods River Resort & Campground
 39 0 0
Pennyroyal Farm
 37 0 0
Caspar Beach RV Park
 35 0 0
I & E Lath Mill
 31 0 0
Csp-Russian Gulch State Park
 30 0 0
Jug Handle Creek Farm
 30 0 0
Mendocino Presbyterian Church
 30 0 0
Shoreline Cottages
 29 0 0
Mendocino Grove
 27 0 0
Mendocino Inn and Farm a
 27 0 0
Mendocino Inn and Farm B
 27 0 0
Fog Eater Cafe
 26 0 0
Mendocino Market
 26 0 0
Anderson Valley Health Center
 25 0 0
Blackbird Farm
 25 0 0
Boonville Hotel
 25 0 0
Coast Inn and Spa
 25 0 0
Dick's Place
 25 0 0
Mendocino Bungalows
 25 0 0
Mendocino Inn and Farm C
 25 0 0
Mendocino School District-Albion School
 25 0 0
All 106 in the systems table
Inactive systems (116, no longer operating or reporting)

Kept for the record and excluded from the county totals above. Browse inactive systems.

About this data

Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.

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.