Tapcensus

California

Santa Barbara County drinking water quality

151 active public water systems serve 653,638 people in Santa Barbara County. 104 are compliant, 47 had at least one EPA violation in the past three years, 0 are designated serious violators, and 11 carry a health flag.

Active systems 151 63 community systems
People served 654K by public water systems
Systems with violations 47 31% of active systems, past 3 years
Serious violators 0 11 systems carry a health flag

Needs attention

EL Capitan Mutual Water Company CA4200703 · Community water system · Serves 325 1 rule violated in the past three years. Unresolved: Lead and Copper Rule Revisions.
Saint Marie Mobile Home Park CA4200842 · Community water system · Serves 320 1 rule violated in the past three years. Unresolved: Lead and Copper Rule Revisions.
Ellwood Mutual Water Company CA4200693 · Community water system · Serves 186 2 rules violated in the past three years. Unresolved: Lead and Copper Rule and Lead and Copper Rule Revisions.
Sanford Winery CA4200938 · Transient non-community system · Serves 170 1 rule violated in the past three years. Unresolved: Revised Total Coliform Rule.
Sable Offshore Corp las Flores Canyon CA4200743 · Non-Transient non-community system · Serves 90 1 rule violated in the past three years. Unresolved: Lead and Copper Rule Revisions.
Rolling Hills Mutual Water Company CA4200851 · Community water system · Serves 66 1 rule violated in the past three years. Unresolved: Lead and Copper Rule Revisions.
Lingate Lane Mutual Water Company CA4200633 · Community water system · Serves 55 1 rule violated in the past three years. Unresolved: Lead and Copper Rule Revisions.
Sable Offshore Corp Popco CA4200691 · Non-Transient non-community system · Serves 30 1 rule violated in the past three years. Unresolved: Lead and Copper Rule Revisions.
Gaviota Oil Heating Facility CA4200725 · Non-Transient non-community system · Serves 25 1 rule violated in the past three years. Unresolved: Lead and Copper Rule Revisions.
Los Prietos Boy's Camp CA4200630 · Non-Transient non-community system · Serves 25 1 rule violated in the past three years. Unresolved: Lead and Copper Rule Revisions.

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

Community water systems

63 systems, largest first
SystemServesStatusRules violated, 3 yrUnresolved
City of Santa Maria Utilities Department
 112,208 0 0
City of Santa Barbara Water Department
Santa Barbara 		93,334 0 0
Goleta Water District
 85,535 0 0
Lompoc-City Water Utility Div
Lompoc 		40,538 0 0
Golden State Water Company Orcutt
 34,267 1 0
Carpinteria Valley Water District
 16,356 0 0
American Water O&m, LLC Vsfb
 14,971 0 0
Montecito Water Dist
 12,010 1 0
Guadalupe Water Department
 8,897 0 0
Vandenberg Village Comm. Serv. Dist.
 7,308 0 0
Santa Ynez River Water Cons. Dist. Id#1
 7,022 0 0
Solvang Water Division
 5,980 0 0
City of Buellton Water Division
 5,091 0 0
LA Cumbre Mutual Water CO
 4,861 0 0
Mission Hills Csd
 3,600 0 0
Golden State Water Company Tanglewood
 1,979 0 0
Los Alamos Community Services District
 1,534 0 0
Los Prietos Complex
 845 1 0
Cuyama Community Services District
 700 1 0
Golden State Water Company Lake Marie
 548 0 0
San Vicente Water Company
 408 0 0
EL Capitan Mutual Water Company
 325 1 1
Woodstock Ranch
 325 0 0
Saint Marie Mobile Home Park
 320 1 1
Santa Ynez Rancho Estates
 304 0 0
Skyline Park
 295 0 0
Rancho Marcelino Water
 240 0 0
Oak Trail Estates
 211 0 0
Las Positas Mutual Water Company
 200 0 0
Ellwood Mutual Water Company
 186 2 2
Painted Cave
 160 0 0
Casmalia Community Services District
 150 1 1
Foster Road Mutual Water Company
 150 4 0
Meadowlark Ranches Mutual Water Company
 150 1 1
East Valley Farms Mutual Water Company
 142 1 0
Sisquoc
 137 0 0
Rancho Ynecita
 129 0 0
San Marcos Mutual Water Company
 120 0 0
Bobcat Springs Mutual Water Company
 115 0 0
Oak Trail Ranch
 102 0 0
Midland School
 100 0 0
Montecito Sea Meadows
 100 1 1
Vista Hills Mutual Water Company
 75 2 0
Naples
 66 0 0
Rolling Hills Mutual Water Company
 66 1 1
Santa Rita Water
 66 1 1
Cachuma Village
 60 1 0
Vieja Mutual Water Company
 60 1 0
Lingate Lane Mutual Water Company
 55 1 1
Alegria Domestic Mutual Water Company
 54 0 0
Non-community systems (88: schools, campgrounds, workplaces, restaurants)

These systems serve places people visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Jalama Beach Park
 120,017 1 0
Lake Cachuma County Park
 40,019 0 0
Dierberg/star Lane Vineyard
 2,502 0 0
Vega Vineyard and Farm
 2,022 0 0
Koehler Winery
 2,008 0 0
Cal Trans Gaviota Rsr
 2,000 0 0
Andrew Murray Vineyard
 1,815 0 0
Nojoqui Falls County Park
 1,502 1 0
Rusack Vineyards
 1,327 1 0
LA Purisima Golf Course
 1,024 1 0
Rsm Resort LLC
 1,011 0 0
Rancho Maria Golf Course
 1,000 0 0
Gatehouse Tasting Room at Bien Nacido
 950 0 0
EL Capitan Beach State Park
 915 0 0
Windset Farms Greenhouses
 900 0 0
Refugio State Beach
 857 0 0
Arctic Cold
 623 0 0
Bonita School
 589 0 0
Rancho Alegre
 519 0 0
Circle V Ranch Camp
 515 0 0
Valley Pacific Petroleum Services
 500 0 0
Pence Vineyards
Lompoc 		463 0 0
Rancho Oso
 416 0 0
Fess Parker Winery
 415 0 0
Lo-Fi Winery
 413 1 0
Foley Estates Winery
 366 0 0
South Coast Inn
 363 0 0
The Steward
 348 0 0
Shepherd of the Valley
 323 0 0
Las Cruces State Park
 306 0 0
Cuyama Elementary School
 250 1 0
Folded Hills Winery
 235 1 0
The Ranch Church
 204 0 0
Imerys Filtration Minerals, INC
 200 1 0
Majestic Townsgate Water System
 200 1 1
Sanford Winery
 170 1 1
Zaca Mesa Winery
 170 0 0
Brick Barn Estate Winery
 160 0 0
Betteravia Gas & Mart
 150 0 0
Flag IS UP Farms
 150 0 0
San Lorenzo Seminary
 145 0 0
Cold Spring Tavern
 120 2 0
Paradise Canyon Improvement Association
 115 0 0
Chisan Orchids Nursery
 110 1 1
The Bridgehouse
 109 0 0
Lafond Winery
 107 0 0
Highline Adventures
 105 0 0
Zaca Lake Retreat
 105 1 0
Kinecta Fcu
 104 4 0
Live Oak Campground
 100 0 0
Sure Fresh Produce
 100 0 0
Sable Offshore Corp las Flores Canyon
 90 1 1
Resource Center
Santa Barbara 		85 2 0
The Hilt Estate
Santa Barbara 		85 0 0
Brander Vineyard
 80 0 0
Teixeira Farms Frontier Cooling
 80 1 0
San Marcos Christian Camp
 75 0 0
Riverbench Winery
 70 0 0
Sagebrush Annie's Restaurant
 51 0 0
Flood Ranch/rancho Sisquoc
 50 0 0
Pacific Coast Energy Company
 50 0 0
Petros Winery
 50 0 0
Vista de las Cruces
 50 0 0
Cuyama Mutual Water Company
 48 0 0
Peake Ranch
 47 0 0
Foxen Vineyard Inc.
 46 0 0
Vincent Vineyards
 46 0 0
Main Street Produce
 45 1 1
White Lotus
 42 0 0
Firestone Vineyard
 37 0 0
Ventucopa
 36 0 0
Better Cooling Produce
 35 1 0
Tres Hermanas Winery
 35 0 0
Cambria Winery
 30 0 0
Sable Offshore Corp Popco
 30 1 1
Eleven Confessions Winery
 29 0 0
Santa Barbara Pistachio Company
 29 0 0
Los Prietos Improvement Association
 27 0 0
Babcock Winery
 25 1 0
Channel Islands NP Santa Rosa
 25 0 0
Circle Bar B Guest Ranch
 25 1 0
Fremont/santa Ynez Improvement Assoc.
 25 0 0
Gaviota Oil Heating Facility
 25 1 1
Los Prietos Boy's Camp
 25 1 1
Marborg Industries
 25 0 0
Melville Winery
 25 0 0
Moreton Bay Professional Plaza
 25 6 1
Olive Crest
 25 0 0
Inactive systems (108, 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.