Tap Truth EPA drinking water records, in plain English

County drinking water records

Mendocino County, CA drinking water systems

50 community water systems serve Mendocino County, CA, reporting 63,632 people served in all. A system that also serves other counties counts all of its customers here.

18 of them (36%) had at least one health-based violation in the last 10 years. 15 systems still have one unresolved.

30 rely mainly on groundwater and 20 on surface water, counting water bought from other systems.

44 systems filed a lead service line inventory listing 0 lead lines, 0 galvanized lines that must be replaced and 3,563 lines of unknown material.

Community water systems
50
People served, sum of each system's own figure
63,632
Systems with a health-based violation, last 10 years
18
Systems with one unresolved
15
Lead service lines in inventories
0

Water systems serving Mendocino County

50 systems

People served is each system's own figure for its whole service area. Violation counts cover the last 10 years of EPA records.

System Serves People served Main source Health-based violations, 10 years Unresolved Lead lines
City of Ukiah Ukiah 16,607 Surface water 0 1 0
City of Fort Bragg Fort Bragg 6,919 Surface water 1 2 No inventory
City of Willits Willits 6,175 Surface water 0 0 0
Millview County Water District Outside cities and towns 5,500 Surface water 0 0 0
Redwood Valley County Water District Redwood Valley and land outside it 5,200 Surface water 0 0 0
Willow County Water District Outside cities and towns 3,797 Purchased surface water 0 0 0
Brooktrails Township CSD Brooktrails and land outside it 3,632 Surface water 0 0 0
North Gualala Water Company Anchor Bay and land outside it 2,593 Surface water 0 0 0
Rogina Water Company Inc. Talmage 2,554 Groundwater 1 2 0
Laytonville County Water District Laytonville 1,152 Groundwater 0 0 0
Hopland Public Utility District Hopland 1,076 Groundwater 0 0 0
Coyote Valley System Outside cities and towns 850 Purchased surface water 0 0 0
Point Arena Rancheria Outside cities and towns 616 Groundwater 7 0 0
Dolphin Isle Marina Outside cities and towns 560 Groundwater 0 0 0
Calpella County Water District Calpella 548 Purchased surface water 0 0 0
Point Arena Water Works Point Arena 459 Groundwater 0 1 0
Round Valley Piner Covelo 409 Groundwater 2 1 0
City of 10,000 Buddhas Talmage and Ukiah 400 Groundwater 1 2 No inventory
Elk County Water District Outside cities and towns 380 Groundwater under direct influence 1 2 No inventory
Westport County Water District Outside cities and towns 369 Surface water 0 0 0
Pine Mountain Mutual Water Co. Outside cities and towns 310 Surface water 0 2 0
Mitomkai Tribal Water System Outside cities and towns 300 Groundwater 0 1 0
Woodside RV Park Outside cities and towns 280 Groundwater under direct influence 1 0 0
Ridgewood Water System Outside cities and towns 265 Groundwater under direct influence 1 0 0
Irish Beach Water District Outside cities and towns 254 Surface water 1 2 No inventory
River Estates Mutual Water Company Outside cities and towns 250 Groundwater 0 0 0
Ocean's Edge Estates Cleone 250 Groundwater 0 0 0
Caspar South Service Company Caspar 188 Groundwater under direct influence 0 0 0
Surfwood Mutual Water Corporation Outside cities and towns 160 Surface water 33 0 0
Woods, the (Mendocino) Outside cities and towns 157 Groundwater 0 0 0
Redwood Valley Rancheria Outside cities and towns 152 Purchased surface water 1 1 0
Creekside Cabins & RV Resort Outside cities and towns 124 Groundwater 1 3 No inventory
Manchester Rancheria Outside cities and towns 100 Groundwater 5 0 0
Meadow Estates Mutual Boonville 100 Groundwater 0 0 0
Lake View Mutual Water Co. Outside cities and towns 90 Groundwater 0 1 0
Round Valley Agency Outside cities and towns 84 Groundwater 3 4 0
Bella Shores Mobile Home Park Outside cities and towns 80 Groundwater 1 0 0
Hills Ranch Mutual Water Company Mendocino 79 Groundwater 0 0 0
Shorelands Road & Water Company Outside cities and towns 78 Groundwater 0 0 0
Yokayo Tribe of Indians Outside cities and towns 75 Groundwater 1 3 No inventory
Original Sherwood Valley Rancheria Laytonville 60 Groundwater 2 0 0
Albion Mutual Water Company Albion 56 Groundwater 0 0 0
Point of View Mutual Water Co Mendocino 56 Groundwater 0 0 0
Seafair Road and Water Company Outside cities and towns 50 Groundwater 0 0 0
Holly Ranch Village Outside cities and towns 50 Groundwater 0 0 0
Branscomb Mobile Home Park Outside cities and towns 42 Surface water 2 0 0
Point Cabrillo Highlands Outside cities and towns 42 Groundwater 0 0 0
Little Lake Mobile Home Park Outside cities and towns 38 Groundwater 0 0 0
Big River Vista Mutual Water Company Mendocino 36 Groundwater 0 0 0
Covelo Mobile Home Park Covelo 30 Groundwater 0 0 0

Cities and towns in Mendocino County

17 places

Back to California

Counties come from the counties EPA lists each system serving, matched to 2024 Census counties; where EPA lists none, from the county coded in the system's ID, its service area map, or its mailing address. A county holding at least a fifth of a system's service area map is added when at least a fifth of that map lies in those counties. Towns are the ones EPA lists and the Census places such a map covers, always inside those counties. In New England, where EPA's town names a whole Town, it is not matched to the village of the same name. A system is not listed in a county holding less than a fifth of its map, or in a county or town its map reaches when the map lies mostly outside the counties EPA lists, so a page can leave out a system that serves part of the area. Methodology and limitations