Tapcensus

California

San Bernardino County drinking water quality

321 active public water systems serve 2,573,235 people in San Bernardino County. 175 are compliant, 146 had at least one EPA violation in the past three years, 1 is a designated serious violator, and 24 carry a health flag.

Active systems 321 147 community systems
People served 2.6M by public water systems
Systems with violations 146 45% of active systems, past 3 years
Serious violators 1 24 systems carry a health flag

Needs attention

Gordon Acres Water CO CA3600297 · Community water system · Serves 200 6 rules violated in the past three years. Unresolved: Lead and Copper Rule, Lead and Copper Rule Revisions, Public Notice Rule and Revised PN Rule, and Consumer Confidence Rule.
California Institution for Men CA3610850 · Community water system · Serves 10,667 1 rule violated in the past three years. Unresolved: Ground Water Rule.
Valley of Enchantment Mwc CA3610051 · Community water system · Serves 2,471 1 rule violated in the past three years. Unresolved: Lead and Copper Rule Revisions.
Fallsvale Service Company CA3610021 · Community water system · Serves 1,046 2 rules violated in the past three years. Unresolved: Lead and Copper Rule and Lead and Copper Rule Revisions.
Apple Valley Heights Cwd CA3600009 · Community water system · Serves 983 1 rule violated in the past three years. Unresolved: Lead and Copper Rule Revisions.
Juniper Riviera Cwd CA3600222 · Community water system · Serves 858 2 rules violated in the past three years. Unresolved: Lead and Copper Rule Revisions.
Apple Valley Foothill Cwd CA3600008 · Community water system · Serves 841 2 rules violated in the past three years. Unresolved: Lead and Copper Rule and Lead and Copper Rule Revisions.
MP Mine Operations LLC CA3600172 · Community water system · Serves 655 1 rule violated in the past three years. Unresolved: Lead and Copper Rule Revisions.
Knoll Enterprises CA3600504 · Community water system · Serves 500 6 rules violated in the past three years. Unresolved: Lead and Copper Rule Revisions and Public Notice Rule and Revised PN Rule.
Valley View Park Mwc CA3610046 · Community water system · Serves 499 1 rule violated in the past three years. Unresolved: Lead and Copper Rule Revisions.

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

Community water systems

147 systems, largest first
SystemServesStatusRules violated, 3 yrUnresolved
San Gabriel Valley WC Fontana
 228,270 0 0
San Bernardino City
San Bernardin0 		214,665 0 0
Cucamonga Valley Water District
 213,375 0 0
Ontario Municipal Utilities Company
Ontario 		185,010 0 0
Victorville Water District
 140,721 0 0
San Bernardino Valley WD
 109,608 0 0
East Valley Water District
 108,600 0 0
Hesperia WD
 101,836 0 0
West Valley Water District
 96,123 0 0
Chino, City of
Chino 		90,187 0 0
Upland, City of
Upland 		78,376 0 0
Redlands City Mud-Water Div
Redlands 		78,025 0 0
Chino Hills, City of
Chino Hills 		76,314 0 0
Liberty Utilities (av Ranchos) Corp.
 63,381 0 0
Rialto, City of
Rialto 		59,264 0 0
Monte Vista WD
 56,390 0 0
Yucaipa Valley Water District
 52,202 3 0
Colton, City of
Colton 		46,525 0 0
Adelanto, City of
Adelanto 		39,930 1 0
Golden State Water CO Barstow
 32,445 0 0
HI Desert WD
 26,660 1 1
Big Bear Lake Dwp Big Bear System
 26,164 0 0
Loma Linda, City of
Loma Linda 		25,208 0 0
Phelan Pinon Hills Csd
 24,509 0 0
Riverside Highland Water Company
 19,053 1 1
Twentynine Palms Water District
 18,795 0 0
Usmc 29 Palms
 16,067 0 0
Sbdno County Service Area 64
 14,955 0 0
Muscoy Mwc No. 1
 13,000 1 0
Sbdno County Service Area 70j
 12,895 0 0
Big Bear City Csd
Big Bear City 		12,738 0 0
Crestline Village Cwd Division 10
 11,650 0 0
California Institution for Men
 10,667 1 1
US Army Fort Irwin
 7,800 0 0
Western Heights Water Company
 7,735 0 0
Lake Arrowhead Csd
 7,038 0 0
Joshua Basin Water District
 6,489 0 0
Helendale Community Service District
 6,347 0 0
Golden State Water CO Apple Vly South
 6,247 0 0
Glen Helen Water System
 5,900 0 0
Running Springs Water District
 5,268 1 0
Needles, City of
Needles 		4,872 1 0
Golden State Water CO Wrightwood
 4,153 0 0
Sheep Creek Water Company
 4,002 1 0
Bighorn Desert View Water Agency
 3,916 0 0
San Antonio Water Company
 3,441 0 0
Marygold Mwc
 3,155 1 0
Green Valley Mwc
 2,993 1 0
Arrowhead Villas Mutual Service Company
 2,644 0 0
Alpine Water Users Association
 2,534 0 0
Non-community systems (174: schools, campgrounds, workplaces, restaurants)

These systems serve places people visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Snow Summit
 75,500 3 1
Hanna Flats Campground
 4,850 0 0
Arrowhead Regional Medical Center
 4,500 0 0
Providence Mtns Sra
 3,203 0 0
Applewhite Campground
 3,177 1 0
Green Valley Campground
 3,029 0 0
Riley's Farm
 2,400 1 0
Cal Trans C.v. Kane
 2,200 1 0
Cal Trans Desert Oasis
 2,000 0 0
Joshua Tree Lake Rv/camp
 1,458 0 0
Mojave River Forks Regional Park
 1,356 1 0
Usmc Yermo Annex
 1,184 0 0
Caillier Water System
 1,034 0 0
Peggy Sue's Diner
 1,019 0 0
Emerald Cove Resort
 1,000 0 0
MT Baldy Ski Lift
 1,000 0 0
Rasor Road Service
 1,000 1 0
Shady Cove
 789 0 0
Lucerne Valley Elementary School
 724 0 0
Rainbo Beach
 700 2 0
Kelly's Market
 660 1 0
Big Bend Resort
 655 0 0
Lucerne Valley High School
 606 0 0
River Lodge Resort
 602 0 0
Windmill Resort
 530 0 0
Rio del Colorado
 515 0 0
Burger King #9310
 510 1 0
Cajon Pass Shell
 507 0 0
HI Sahara Oasis
 507 1 0
Echo Lodge Resort
 500 0 0
Oak Tree Mountain
 500 1 0
Riverland Resort
 470 1 0
Newberry Mini Mart and Truck Stop
 465 0 0
Big Pine Flats Admin & Recreation
 417 0 0
Camp Cedar Falls
 405 0 0
Bonita Ranch RV Campground
 400 1 0
Black Meadow Landing
 350 0 0
Sunshine Resort
 325 0 0
Seven Oaks MT Resort MHP
 321 0 0
Calizona RV Park
 310 0 0
Camp Cedar Crest
 310 1 0
Alpine Retreat and Camp
 309 0 0
Newberry Springs Gas Station & Mini-Mart
 306 1 0
Aeronautical Systems
 304 0 0
Lighthouse Trailer Resort
 302 1 0
8986 Deep Creek Road
 300 1 0
Camp Gilboa
 300 1 0
Moose Lodge 2096
 278 1 0
Park Moabi
 267 1 1
Newberry Elementary School
 255 0 0
Nps Kelso Depot
 254 1 0
Dollar General Store # 14280
 250 1 0
Holcomb Valley Ranch
 250 2 0
YMCA Camp Arbolado
 231 0 0
Barstow Calico KOA
 215 0 0
Ponderosa Pines Christian Camp
 202 0 0
Camp Osito Rancho
 200 1 0
Forest Lawn Scout Reservation
 200 2 0
Woodcraft Rangers
 200 1 0
Crazzy's Wasewagan Camp
 198 0 0
Southern California Blending Center INC
 180 0 0
Mitsubishi Cement Plant Cushenbury
 160 0 0
Cedar Lake Camp INC
 157 0 0
Camp Alandale at Sky Meadows
 152 1 0
Barstow Army Heliport
 150 0 0
Calportland Oro Grande Plant
 150 0 0
Camp Morning Star
 150 0 0
Northshore RV Resort INC
 140 2 0
Big Bear Shores RV Resort
 132 0 0
Empire Landing Campground-Sundance RV
 126 2 0
Cdfa-Mountain Pass Jpoe Ais
 123 1 0
Institute of Mental Physics
 120 3 1
Johnson Valley Community Center
 120 0 0
Lone Wolf Colony
 114 0 0
Riley's Log Cabin Farm
 105 1 0
Needles KOA
 104 0 0
Nps Hole in the Wall Campground
 104 1 0
R W Ranch
 101 0 0
Abraham Maida Water System
 100 0 0
Cemex Calif Cement LLC AV
 100 1 0
Cemex Calif Cement LLC VV
 100 1 1
Dovid Oved Retreat Center
 100 0 0
EL Coyote Loco
 100 1 0
EL Mirage Market
 100 0 0
Forest Home Christian CC
 100 2 0
Holland Burger Cafe
 100 2 0
Loch Leven Christian Camp & Conference C
 100 1 0
Lytle Creek Administration Site
 100 5 3
Newberry Chevron
 100 0 0
Newberry Community Services
 100 0 0
Omya California, a Division of Omya INC
 100 2 1
Ted's Water System
 100 1 0
Wrightwood Country Club
 100 0 0
Mojave Solar Project Alpha Power Plant
San Bernardin0 		86 0 0
Mojave Solar Project Beta Power Plant
San Bernardin0 		86 0 0
Hitchin Lucerne INC
 85 0 0
Lucerne Valley Parks & Recreation
 84 0 0
Victor Valley Wastewater Reclam
 80 2 0
Csa 29 Midway Park
 78 1 0
Big Bear Administration
 75 3 3
All 174 in the systems table
Inactive systems (371, 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.