Tap Truth EPA drinking water records, in plain English

County drinking water records

San Bernardino County, CA drinking water systems

144 community water systems serve San Bernardino County, CA, reporting 2,381,948 people served in all. A system that also serves other counties counts all of its customers here.

38 of them (26%) had at least one health-based violation in the last 10 years. 28 systems still have one unresolved.

110 rely mainly on groundwater and 34 on surface water, counting water bought from other systems.

131 systems filed a lead service line inventory listing 0 lead lines, 2,756 galvanized lines that must be replaced and 20,376 lines of unknown material.

12 more systems are placed in San Bernardino County, CA by mailing address or by the county their records name because they have no service area map that lines up with their own records, so they are listed apart and not counted here.

Community water systems
144
People served, sum of each system's own figure
2,381,948
Systems with a health-based violation, last 10 years
38
Systems with one unresolved
28
Lead service lines in inventories
0

Water systems serving San Bernardino County

144 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
San Gabriel Valley WC - Fontana Fontana and Rialto 237,700 Surface water 0 0 0
San Bernardino City San Bernardino and Muscoy 214,665 Groundwater 0 0 0
Cucamonga Valley Water District Rancho Cucamonga, Fontana and 1 more 211,069 Surface water 0 0 0
Ontario Municipal Utilities Company Ontario 185,010 Purchased surface water 0 0 0
Victorville Water District Victorville and Mountain View Acres 135,983 Purchased surface water 0 0 0
East Valley Water District Highland and San Bernardino 108,629 Surface water 3 0 0
West Valley Water District Rialto, Fontana and 2 more 104,498 Surface water 0 0 0
Hesperia WD Hesperia 100,744 Groundwater 0 0 0
City of Chino Chino 86,435 Purchased surface water 0 0 0
City of Upland Upland 78,376 Surface water 0 0 0
Redlands City MUD-Water Div Redlands and Mentone 78,025 Surface water 0 0 0
City of Chino Hills Chino Hills 76,414 Purchased surface water 0 0 0
Liberty Utilities (Av Ranchos) Corp. Apple Valley 64,469 Groundwater 0 0 0
Monte Vista WD Montclair 56,017 Purchased surface water 0 0 0
City of Rialto Rialto 54,453 Purchased surface water 0 0 0
Yucaipa Valley Water District Yucaipa, Calimesa and 1 more 52,010 Surface water 4 0 0
City of Colton Colton 46,525 Groundwater 0 0 0
City of Adelanto Adelanto and Victorville 39,930 Groundwater 0 0 0
Golden State Water Co - Barstow Barstow and Lenwood 32,547 Groundwater 0 0 0
Hi Desert WD Yucca Valley and Homestead Valley 26,411 Groundwater 0 1 0
Big Bear Lake DWP - Big Bear System Big Bear Lake and Big Bear City 26,132 Groundwater 0 0 0
City of Loma Linda Loma Linda 25,129 Groundwater 0 0 0
Phelan Pinon Hills CSD Phelan and Piñon Hills 24,285 Groundwater 0 0 0
Riverside Highland Water Company Grand Terrace and Highgrove 20,188 Groundwater 0 0 0
Twentynine Palms Water District Twentynine Palms 18,795 Groundwater 0 0 0
US Army Fort Irwin Fort Irwin and land outside it 15,701 Groundwater 0 0 0
Loma Linda University Loma Linda 15,368 Groundwater 0 0 0
Usmc - 29 Palms Outside cities and towns 15,248 Groundwater 0 0 0
Sbdno County Service Area 64 Spring Valley Lake, Victorville and 1 more 14,911 Groundwater 0 0 0
Muscoy MWC No. 1 Muscoy 13,000 Groundwater 0 0 0
Sbdno County Service Area 70J Oak Hills 12,843 Groundwater 0 0 0
Big Bear City CSD Big Bear City 12,738 Groundwater 0 0 0
Crestline Village CWD - Division 10 Crestline 11,650 Purchased surface water 0 0 0
California Institution for Men Chino 10,667 Groundwater 5 0 0
South Mesa WC Yucaipa and Calimesa 10,108 Groundwater 0 0 0
City of Needles Needles 8,766 Groundwater 0 0 0
Western Heights Water Company Yucaipa and Redlands 7,705 Purchased surface water 0 0 0
Lake Arrowhead CSD Lake Arrowhead 7,038 Surface water 0 0 0
Joshua Basin Water District Joshua Tree and land outside it 6,640 Groundwater 0 0 0
Helendale Community Service District Silver Lakes and land outside it 6,347 Groundwater 0 0 0
Golden State Water Co - Apple Vly South Apple Valley 6,208 Groundwater 0 0 0
Running Springs Water District Running Springs 5,268 Purchased surface water 0 0 0
Chemehuevi Water Outside cities and towns 4,400 Groundwater 0 0 0
Sheep Creek Water Company Phelan and Piñon Hills 4,002 Groundwater 0 0 0
Bighorn - Desert View Water Agency Homestead Valley and land outside it 3,916 Groundwater 0 0 0
Gilbert Street Complex San Bernardino 3,833 Groundwater 0 1 0
Big River Development Big River 3,550 Groundwater 3 12 0
San Antonio Water Company San Antonio Heights 3,441 Groundwater 0 0 0
Town of Parker Parker and Bluewater 3,360 Groundwater 0 0 0
Marygold MWC Fontana and Bloomington 3,055 Groundwater 0 0 0
High Desert Detention Center Adelanto 3,035 Groundwater 0 0 0
Green Valley MWC Outside cities and towns 2,993 Purchased surface water 1 0 0
Arrowhead Villas Mutual Service Company Lake Arrowhead 2,654 Purchased surface water 0 0 0
Alpine Water Users Association Lake Arrowhead 2,534 Purchased surface water 0 0 0
Valley of Enchantment MWC Crestline 2,471 Purchased surface water 1 2 0
Cedarpines Park MWC Crestline 2,458 Purchased surface water 0 0 0
Terrace Water Company Outside cities and towns 2,400 Purchased groundwater 0 0 0
Clawa Crestline, Lake Arrowhead and 1 more and land outside them 2,320 Surface water 0 0 0
Thunderbird CWD Outside cities and towns 2,098 Groundwater 1 0 0
Golden State Water Co - Apple Vly North Apple Valley 2,086 Groundwater 0 0 0
Arrowbear Park CWD Running Springs and land outside it 1,856 Groundwater 0 0 0
Searles Valley Minerals Operations Inc Searles Valley 1,818 Groundwater 0 0 0
Golden State Water Co - Morongo Del Sur Morongo Valley 1,717 Groundwater 0 0 0
Mt Baldy Homeowners Assn. Outside cities and towns 1,700 Groundwater 0 0 0
Devore WC Outside cities and towns 1,574 Groundwater 2 0 0
Mariana Ranchos CWD Outside cities and towns 1,502 Groundwater 0 0 0
DWP - Fawnskin Outside cities and towns 1,271 Groundwater under direct influence 0 0 0
Sbdno County Service Area 70 Cedar Glen Lake Arrowhead 1,240 Purchased surface water 1 0 0
California Institution for Women Chino 1,195 Purchased groundwater 0 0 0
Usmc Nebo (Barstow) Barstow 1,126 Purchased groundwater 0 0 0
Bdvwa - Goat Mountain Id Homestead Valley 1,118 Groundwater 0 0 0
Barton Flats Water System Outside cities and towns 1,070 Surface water 5 2 No inventory
Fallsvale Service Company Outside cities and towns 1,046 Groundwater 1 2 0
Baker Community Services District Baker and land outside it 1,000 Groundwater 1 0 0
Apple Valley Heights CWD Outside cities and towns 983 Groundwater 1 2 0
Liberty -Yermo Yermo and land outside it 861 Groundwater 0 0 0
Juniper Riviera CWD Outside cities and towns 858 Groundwater 3 2 No inventory
Deer Lodge Water System Lake Arrowhead 845 Purchased surface water 0 0 0
Lacsd - Rimforest Lake Arrowhead 817 Purchased surface water 0 0 0
Apple Valley Foothill CWD Outside cities and towns 811 Groundwater 1 2 0
Daggett Comm SVCS Dist Barstow and land outside it 795 Groundwater 33 1 0
Jubilee MWC Lucerne Valley 782 Groundwater 0 0 0
Center Water Co Lucerne Valley 662 Groundwater 0 0 0
MP Mine Operations LLC Outside cities and towns 626 Groundwater 1 2 No inventory
CSA 70 W-3 Hacienda Morongo Valley 611 Groundwater 38 0 0
Snowcrest Heights Imp Assoc Outside cities and towns 600 Groundwater 0 0 0
Golden State Water Co - Lucerne Lucerne Valley 586 Groundwater 0 0 0
Palms River Resort Needles 531 Groundwater 0 0 0
CSA 42 Oro Grande Outside cities and towns 529 Groundwater 0 0 0
Knoll Enterprises Outside cities and towns 500 Groundwater 71 3 No inventory
Valley View Park MWC Crestline 499 Purchased surface water 1 2 No inventory
Sky Forest MWC Lake Arrowhead 492 Purchased surface water 0 0 0
Rancheritos MWC Apple Valley 487 Groundwater 0 0 0
Lytle Springs WC Lytle Creek 475 Groundwater 0 0 0
CSA 70 W-4 Pioneertown Outside cities and towns 470 Groundwater 25 0 0
Glen Martin MWC Outside cities and towns 450 Groundwater 1 3 0
Forest Park MWC Outside cities and towns 406 Groundwater 1 3 0
Strawberry Lodge MWC Crestline 381 Groundwater 0 0 0
Golden State Water Morongo Delnorte Morongo Valley 373 Groundwater 0 0 0
Smiley Park Country Club Running Springs 370 Groundwater 1 0 0
Olive Dell Ranch Redlands and land outside it 350 Groundwater 0 0 0
Desert Springs MWC Lucerne Valley 325 Groundwater 0 0 0
Mill Creek MSC Outside cities and towns 315 GUP 0 0 0
Rand Communities Water District Johannesburg and Randsburg and land outside them 303 Groundwater 28 2 No inventory
Apple Valley View MWC Outside cities and towns 303 Groundwater 4 0 0
Big Pine Tract Outside cities and towns 300 Groundwater 0 0 0
CSA 70-F Morongo Morongo Valley 300 Groundwater 38 0 0
Moss Mobile Manor Lucerne Valley 290 Groundwater 0 0 0
River Reflections Estates Bluewater and land outside it 267 Groundwater 0 0 0
Navajo MWC Apple Valley 264 Groundwater 0 0 0
Bar H MWC Lucerne Valley 260 Groundwater 14 3 No inventory
Lake Jodie Water System Outside cities and towns 250 Groundwater 1 2 0
Department of Water and Power Big Bear City 239 Groundwater 0 0 0
Dogwood Blue Jay Cyn Imp Lake Arrowhead 232 Groundwater 0 1 0
Lucerne Valley MWC Lucerne Valley 228 Groundwater 0 0 0
Lucerne Vista MWC Lucerne Valley 224 Groundwater 0 1 0
Ironwood Camp Outside cities and towns 210 Groundwater 43 0 0
Gordon Acres Water Co Lucerne Valley 200 Groundwater 14 3 No inventory
Crystal Lake Property Owners Outside cities and towns 186 Groundwater 0 0 0
Oak Glen Domestic Water Oak Glen 180 Groundwater 0 0 0
Apple Valley Village Mhe Outside cities and towns 180 Groundwater 0 1 0
River Ranch MHP Victorville 176 Groundwater 0 0 0
Bermuda Palms Bluewater 172 Groundwater 0 0 0
Liberty-Bellview Heights Victorville 155 Groundwater 0 0 0
Desert Dawn MWC Lucerne Valley 150 Groundwater 0 0 0
Calico Lake Homeowners Outside cities and towns 150 Groundwater 1 2 No inventory
Bear Valley MHP Apple Valley 150 Groundwater 0 0 0
MWD of So Cal Gene Plant Outside cities and towns 135 Surface water 0 0 0
Bar-Len MWC Barstow 126 Groundwater 39 4 0
Golden State Water Desert View Outside cities and towns 120 Groundwater 0 0 0
Hi Desert MWC Outside cities and towns 112 Groundwater 7 3 No inventory
Paradise Mobile Estates Outside cities and towns 106 Groundwater 0 0 0
Upper Little Bear Mountain Club Lake Arrowhead 101 Groundwater 0 0 0
West End MWC Lucerne Valley 90 Groundwater 0 0 0
Chamisal MWC Outside cities and towns 84 Groundwater 1 2 No inventory
Rocky Comfort Mutual Water Co Mentone 71 Purchased surface water 0 0 0
Foothill Estates MHP Outside cities and towns 66 Groundwater 0 0 0
Rancho Pino Verde Lucerne Valley 66 Groundwater 1 2 No inventory
Brookside MHP Mentone 65 Groundwater 1 2 No inventory
CDF - Pilot Rock Conservation Camp Outside cities and towns 65 Groundwater 0 0 0
Camp Waterman MWC Outside cities and towns 55 Groundwater 0 0 0
MWD of So Cal Iron Mountain Outside cities and towns 36 Surface water 0 0 0
North Shore MWC Outside cities and towns 7 Groundwater 13 0 0
Mojave Water Agency Outside cities and towns Not reported Groundwater 0 0 0

Systems placed by mailing address or county record in San Bernardino County

12 systems

EPA has no service area map for some of these systems, and the maps it has for the others do not line up with their own records. They are placed by mailing address or by the county their records name, and without a map they are not counted in the figures above.

System Serves People served Main source Health-based violations, 10 years Unresolved Lead lines
San Bernardino Valley WD County on record 109,608 Groundwater 0 0 0
Glen Helen Water System County on record 5,900 Groundwater 0 0 0
Golden State Water Co - Wrightwood County on record 4,177 Groundwater 0 0 0
California Village County on record 1,290 Purchased groundwater 0 2 0
Oak Glen Retreat County on record 576 Groundwater 0 0 No inventory
Havasu Water Company Mailing address only 361 Surface water 28 22 0
Rancheritos #2 County on record 291 Groundwater 0 1 No inventory
San Antonio Canyon MSC County on record 119 Groundwater 0 0 0
CDF - Oak Glen Conservation Camp County on record 83 Groundwater 0 0 0
Water Facilities Authority-Jpa County on record Not reported Surface water 0 0 0
Chino Basin Desalter Auth. - Desalter 1 County on record Not reported Groundwater 0 0 0
West End Consolidated Water Company County on record Not reported Groundwater 0 0 0

Cities and towns in San Bernardino County

51 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