Tapcensus

California

Riverside County drinking water quality

198 active public water systems serve 2,719,341 people in Riverside County. 132 are compliant, 66 had at least one EPA violation in the past three years, 0 are designated serious violators, and 24 carry a health flag.

Active systems 198 94 community systems
People served 2.7M by public water systems
Systems with violations 66 33% of active systems, past 3 years
Serious violators 0 24 systems carry a health flag

Needs attention

Mecca Arco Travel Center CA3303092 · Non-Transient non-community system · Serves 1,847 1 rule violated in the past three years. Unresolved: Lead and Copper Rule Revisions.
Jojoba Hills Skp Resort, Inc. CA3301385 · Non-Transient non-community system · Serves 912 1 rule violated in the past three years. Unresolved: Lead and Copper Rule Revisions.
Oasis Date Gardens CA3301373 · Non-Transient non-community system · Serves 832 2 rules violated in the past three years. Unresolved: Lead and Copper Rule Revisions.
Csa 62 CA3301577 · Community water system · Serves 614 1 rule violated in the past three years. Unresolved: Revised Total Coliform Rule.
Carver Tract Mutual Water Comp CA3301107 · Community water system · Serves 600 2 rules violated in the past three years. Unresolved: Lead and Copper Rule Revisions.
Fisherman's Retreat CA3301267 · Community water system · Serves 352 1 rule violated in the past three years. Unresolved: Lead and Copper Rule Revisions.
Bagdasarian Packing Thermal, LLC CA3301935 · Non-Transient non-community system · Serves 250 1 rule violated in the past three years. Unresolved: Lead and Copper Rule Revisions.
Ramona Water Company CA3301529 · Community water system · Serves 250 3 rules violated in the past three years. Unresolved: Lead and Copper Rule and Lead and Copper Rule Revisions.
Grimmway Farms Coachella Valley Facility CA3303112 · Non-Transient non-community system · Serves 245 1 rule violated in the past three years. Unresolved: Lead and Copper Rule Revisions.
Anza Mutual Water Company CA3301180 · Community water system · Serves 224 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

94 systems, largest first
SystemServesStatusRules violated, 3 yrUnresolved
Eastern Municipal WD
 659,923 0 0
Riverside, City of
Riverside 		302,776 0 0
Coachella Vwd: Cove Community
 270,000 0 0
Elsinore Valley Mwd
 169,455 0 0
Corona, City of
Corona 		169,380 6 0
Rancho California Water District
 146,147 0 0
Jurupa Community SD
 134,638 0 0
Indio Water Authority
 89,137 1 0
Western Mwd
 87,955 0 0
Desert Water Agency
 75,588 0 0
Beaumont Cherry Valley WD
 66,841 0 0
Lake Hemet Mwd
 52,913 0 0
Coachella Water Authority
Coachella 		43,590 2 0
Mission Springs WD
 43,484 0 0
Rubidoux Community SD
 38,522 1 0
Hemet, City of
Hemet 		33,591 0 0
Banning, City of
Banning 		31,680 0 0
Norco, City of
Norco 		25,068 5 0
Temescal Valley Water District
 22,268 1 0
San Jacinto, City of
San Jacinto 		20,938 0 0
Western Mwd Murrieta Division
 17,837 0 0
South Mesa WC
 10,348 0 0
Blythe City of
Blythe 		9,735 0 0
Myoma Dunes Mutual Water Company
 9,445 0 0
Nuevo Water Company
 6,733 0 0
Santa Ana River Water Company
 6,475 0 0
Coachella Vwd: I.d. No. 8
 4,700 0 0
Chuckawalla Valley State Prison
 4,331 0 0
Farm Mutual W.c. (the)
 4,026 1 0
Idyllwild Water District
 3,762 2 0
Box Springs Mutual WC
 3,382 1 0
Home Gardens County WD
 3,095 0 0
Cabazon Water District
 1,900 2 0
Pine Cove Water District
 1,540 0 0
Fern Valley WD
 900 0 0
Plantation on the Lake Park
 885 0 0
Riverside Csa #122-Mesa Verde
 766 0 0
California Rehabilitation Center Norco
 750 0 0
High Valleys Water District
 733 3 1
Lake Hemet-Garner Valley
 709 0 0
Csa 62
 614 1 1
Carver Tract Mutual Water Comp
 600 2 1
Outdoor Resorts Rancho CA
 600 0 0
Blythe Mesa Ranch
 568 0 0
Banning Hts. Mutual Water Co.
 567 1 0
Glen Eden Sun Club
 560 0 0
Chiriaco Summit Water Dist.
 544 1 0
West Palm Springs Village
 517 0 0
Golden Era Productions
 500 0 0
Csa 51
 400 0 0
Non-community systems (104: schools, campgrounds, workplaces, restaurants)

These systems serve places people visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Aguanga Market Water System
 36,012 0 0
LA Cocina
 24,524 0 0
Anza Valley Business
 10,014 1 0
Anza Community Hall
 9,595 0 0
Caltrans, Cactus City Rest Area
Indio 		6,800 0 0
Caltrans, Whitewater Rest Area
 6,000 1 0
Valley Auto Water
 5,215 0 0
Victory Ranch
 3,008 0 0
Terwilliger Association
 2,401 0 0
Eisenhower Medical Center(water)
 2,300 0 0
Diamond Valley Market Water
 2,195 1 0
Mecca Arco Travel Center
 1,847 1 1
Ladera Golf Club
 1,806 0 0
Palm Springs Aerial Tramway
 1,530 0 0
Hidden Valley Nature Center
 1,210 0 0
Temecula/vail Lake KOA
 1,123 0 0
Stagecoach Inn
 1,006 0 0
Cal-Trans Wiley Well Rest Stop
 1,000 0 0
Jojoba Hills Skp Resort, Inc.
 912 1 1
Joshua Tree NP Cottonwood Springs
 856 0 0
Oasis Date Gardens
 832 2 1
Hurkey Creek Riv. Co. Parks
 756 1 0
Hamilton School
 705 0 0
Spartan Veterinary Services
 700 1 0
Apple Market Two
 561 0 0
Whitewater Preserve
 503 0 0
Kennedy Grocery
 458 1 0
Country Hills RV Park
 415 0 0
Joshua Tree NP Black Rock Canyon
 404 0 0
Grimmway Enterprises Cal Organic Therm
 360 1 1
Bagdasarian Packing Thermal, LLC
 250 1 1
Grimmway Farms Coachella Valley Facility
 245 1 1
Tucalota Springs R.v. Park
 208 0 0
Camp Ronald McDonald for G.t.
 202 0 0
Cottonwood School
 202 0 0
Harmony Farms Event Center
 200 0 0
Idyllwild Brew Pub
 200 0 0
Morongo Golf Course at Tukwet Cnyn
 185 0 0
Chuckwalla Valley Raceway Water System
 161 0 0
Shadow Hills RV Resort
 156 1 0
MT San Jacinto ST Park (stone Creek)
 150 0 0
Tequila Market
 150 0 0
Cherry Valley Ranch LLC
 135 0 0
Thousand Trails Palm Springs MHC
 134 0 0
Maverik Fueling Station
Riverside 		129 0 0
Lake Fulmor Usfs
 125 0 0
River Oasis
 121 0 0
Anza Petroleum INC
 115 1 1
Lookout Roadhouse
 108 0 0
Camp Joe Scherman
 105 0 0
Palm Gas Mart
 105 1 0
Elim Foolish Pleasure
 104 0 0
Alamo Discount Store
 100 1 0
Jack in the Box #5328
 100 0 0
Mayflower Park
 94 1 0
Jewel Date Co. Inc.
 88 1 1
Idyllwild Pines Camp
 85 0 0
White's Steel, Inc.
 85 3 3
Camp Maranatha
 83 1 0
Oasis Palms RV Resort
 81 0 0
Anza Baptist Church
 80 0 0
Chapel in the Pines
 80 0 0
Kkottongnae Retreat Camp
 79 0 0
Sundance Meadows
 73 0 0
Desert Sage Youth Wellness Center
Hemet 		70 0 0
Pine Springs Ranch
 68 1 0
C21 Anza
 66 0 0
Dripping Springs Cg Usfs
 65 0 0
Madison Center Water System
 63 1 1
Buckhorn Camp
 61 1 0
Destiny McIntyre RV Campground
 61 0 0
LA Plata Water System
 60 0 0
Tahquitz Pines
 59 0 0
Paradise Valley Cafe
 58 0 0
Cahuilla Mountain Market & Cafe
 57 1 0
Belk Farms
 56 2 0
McCall Park Riv.county Parks
 53 1 0
Azalea Trails Girl Scouts Camp
 50 0 0
Cvusd Facilities/m&o
 50 1 1
Grace Korean Church
 50 0 0
Hadley Date Gardens
 50 1 0
Quick Chek West
 50 0 0
Coachella Valley Public Cemetery
 49 1 0
Thousand Trails Idyllwild MHC
 48 0 0
Elsinore Hills RV Park
 45 0 0
Genesis Solar LLC
 45 0 0
Zen Mountain Center
 45 0 0
Alhatti Christian Mountain Res
 40 0 0
Cinco Poses Camp Usfs
 40 0 0
Dark Canyon Campground Usfs
 40 1 0
Granite Construction Company
 40 1 0
Marion Mtn/ Fern Basin Usfs
 40 0 0
Skyland Ranch Camp
 40 0 0
Junction Motel
 39 0 0
Country Corners
 38 0 0
Mission Creek Preserve
 33 0 0
Keenwild Station Usfs
 30 1 0
Twin Pines Boys Ranch
 30 0 0
Vista Grande Station Usfs
 30 2 1
Green Acres Mobile Park
 29 1 0
All 104 in the systems table
Inactive systems (267, 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.