Tapcensus

Water quality in Temecula, California

Temecula is in Riverside County. 198 active public water systems serve the county; 66 had an EPA violation in the past three years.

Most likely your provider

Rancho California Water District CA3310038 · Community water system · Surface water purchased
Serves 146,147 people Rules violated, past 3 years 0 Last sanitary survey Dec 4, 2025 Distance 2.2 mi

Your location is within the outer bounds of this system's EPA service area.

Other community water systems in Riverside County

93 systems, nearest first
SystemServesStatusRules violated, 3 yrDistance
Western Mwd (id a Rainbow)
196 0 3.6 mi
Murrieta Palms Mobile Home Park
237 1 4.0 mi
Oak Haven Association
120 0 4.3 mi
Western Mwd Murrieta Division
17,837 0 6.3 mi
Indian Oaks Trailer Park
5 0 9.8 mi
Farm Mutual W.c. (the)
4,026 1 11.1 mi
Outdoor Resorts Rancho CA
600 0 16.0 mi
Elsinore Valley Mwd
169,455 0 16.5 mi
Eastern Municipal WD
659,923 0 16.6 mi
Ortega Oaks RV Park&campground
180 2 18.8 mi
Hemet, City of
Hemet
33,591 0 19.2 mi
Bradford Run RV
75 0 20.0 mi
Rancho Carrillo Mwc
210 0 20.1 mi
Bautista CC No. 36
73 3 21.2 mi
Lake Hemet Mwd
52,913 0 21.2 mi
Nuevo Water Company
6,733 0 21.8 mi
San Jacinto, City of
San Jacinto
20,938 0 22.5 mi
Olivet University
212 0 23.1 mi
Anza Pines Mobile Home Park
90 0 23.8 mi
Glen Eden Sun Club
560 0 24.9 mi
Golden Era Productions
500 0 25.0 mi
Baldy Mountain Ranch
80 0 26.6 mi
Anza Mutual Water Company
224 1 26.8 mi
Western Mwd
87,955 0 27.4 mi
Mountain Center Cafe
77 0 27.6 mi
All 94 community water systems in Riverside County
Non-community systems in Riverside County (104: schools, campgrounds, workplaces, restaurants)

These systems serve places you visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Kkottongnae Retreat Camp
79 0 0
Temecula/vail Lake KOA
1,123 0 0
Dripping Springs Cg Usfs
65 0 0
Sundance Meadows
73 0 0
Cottonwood School
202 0 0
Tucalota Springs R.v. Park
208 0 0
Stagecoach Inn
1,006 0 0
Desert Sage Youth Wellness Center
Hemet
70 0 0
Jojoba Hills Skp Resort, Inc.
912 1 1
Diamond Valley Market Water
2,195 1 0
Elsinore Hills RV Park
45 0 0
Elim Foolish Pleasure
104 0 0
Cahuilla Mountain Market & Cafe
57 1 0
Grace Korean Church
50 0 0
C21 Anza
66 0 0
Anza Petroleum INC
115 1 1
LA Cocina
24,524 0 0
LA Plata Water System
60 0 0
McCall Park Riv.county Parks
53 1 0
Spartan Veterinary Services
700 1 0
Chapel in the Pines
80 0 0
Hamilton School
705 0 0
Terwilliger Association
2,401 0 0
Valley Auto Water
5,215 0 0
Anza Baptist Church
80 0 0
Hurkey Creek Riv. Co. Parks
756 1 0
Keenwild Station Usfs
30 1 0
Idyllwild Pines Camp
85 0 0
Lake Fulmor Usfs
125 0 0
Camp Ronald McDonald for G.t.
202 0 0
Camp Maranatha
83 1 0
Alhatti Christian Mountain Res
40 0 0
Country Hills RV Park
415 0 0
MT San Jacinto ST Park (stone Creek)
150 0 0
Vista Grande Station Usfs
30 2 1
Lawler Park Riv.county Parks
26 1 0
Tahquitz Pines
59 0 0
Marion Mtn/ Fern Basin Usfs
40 0 0
Pine Springs Ranch
68 1 0
Paradise Valley Cafe
58 0 0
Azalea Trails Girl Scouts Camp
50 0 0
Morongo Golf Course at Tukwet Cnyn
185 0 0
Twin Pines Boys Ranch
30 0 0
Camp Joe Scherman
105 0 0
Cherry Valley Ranch LLC
135 0 0
Maverik Fueling Station
Riverside
129 0 0
Palm Springs Aerial Tramway
1,530 0 0
Santa Rosa Springs
25 0 0
Hidden Valley Nature Center
1,210 0 0
Dark Canyon Campground Usfs
40 1 0
All non-community systems
About this data

Water systems are matched to Riverside County, nearest to Temecula first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau place files.

Town locations and ZIP code areas come from U.S. Census Bureau 2020 files.

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.