Tapcensus

Water quality in Rainbow, California

Rainbow is in San Diego County. 198 active public water systems serve the county; 83 had an EPA violation in the past three years.

Most likely your provider

Rainbow Municipal WD CA3710016 · Community water system · Surface water purchased
Serves 23,536 people Rules violated, past 3 years 0 Last sanitary survey Dec 19, 2023 Distance 4.9 mi

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

View system details EPA facility report

Other community water systems in San Diego County

81 systems, nearest first
SystemServesStatusRules violated, 3 yrDistance
Fallbrook Pud
 35,237 0 7.1 mi
Pauma Valley Water Company
 185 5 8.2 mi
Rancho Estates Mutual Water Co.
 200 0 9.4 mi
Yuima Municipal Water District
 360 0 11.3 mi
Yuima Municipal Water District Ida
 693 0 11.3 mi
Rancho Pauma Mutual WC
 899 1 11.4 mi
Valley Center Mwd
 30,166 0 12.3 mi
Lazy H Mutual Water Company
 117 0 12.8 mi
Camp Pendleton (south)
 44,555 0 14.7 mi
Palomar Mountain Mutual Water Co.
 150 1 15.5 mi
Vista Irrigation District
 134,501 0 15.9 mi
Oceanside, City of
Oceanside		 174,340 0 16.1 mi
Palomar Observatory
 20 0 16.2 mi
Vallecitos WD
 114,700 1 17.6 mi
Lake Wohlford Resort
 250 0 18.1 mi
Oakvale Park
 260 3 18.8 mi
Camp Pendleton (north)
 11,576 0 19.5 mi
Escondido, City of
Escondido		 137,044 0 19.9 mi
Rincon del Diablo Mwd (id-1)
 28,427 0 20.7 mi
Carlsbad Mwd
 96,371 0 21.1 mi
Quiet Oaks Mobile Home Park
 120 1 22.3 mi
Del Dios Mutual Water Company
 330 3 23.3 mi
Rincon del Diablo Mwd (id-A)
 5,016 0 23.6 mi
Warner Springs Estates
 448 0 24.4 mi
San Pasqual Academy
 298 0 25.0 mi
All 82 community water systems in San Diego County
Non-community systems in San Diego County (116: schools, campgrounds, workplaces, restaurants)

These systems serve places you visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Santa Margarita County Preserve
 75 0 0
Fallbrook Kamp Retreat
 24 0 0
Palomar Mtn. SP Doane Valley
 131 0 0
Palomar Mtn. SP Silvercrest
 143 0 0
Fry Creek / Observatory
 660 0 0
Oak Knoll Village
 66 1 0
Daley Ranch
 200 0 0
Yoga Center Mother's Kitchen
 101 0 0
Yoga Center Retreat
 201 0 0
Oak Grove Complex
 68 0 0
Rey River Ranch Corp.
 12 0 0
Camp Denver Fox
 86 1 1
Questhaven Municipal Water District
 81 2 0
Hodges Reservoir Recreation Area
 200 0 0
San Pasqual Battlefield State Park
 44 0 0
Bandy Canyon Ranch Corp
 3,564 0 0
San Diego Mountain Lodge
 26,641 3 0
Sutherland Reservoir Recreation Area
 300 1 0
Warner Springs Ranch Resort LLC
 32 2 1
Ramona Oaks RV Resort
 250 4 0
Warner Unified School District
 250 1 0
Mataguay Scout Reservation
 4,000 1 0
The Oaks Venture, LLC
 220 0 0
Auerbach Farms
 68 0 0
Sycamore Canyon / Goodan Ranch
 50 0 0
Santa Ysabel Nature Center
San Diego 		248 0 0
Spencer Valley School District
 40 2 0
Apple Water IS Good
 25 1 0
Calvary Chapel Julian
 101 1 0
Oakoasis Open Space Preserve
 25 1 0
Camp Cedar Glen
 65 1 0
Sacred Mountain Inn
 30 1 0
Camp Winacka
 250 0 0
Julian Oaks Camp
 72 0 0
Nickel Beer Water Company
San Diego 		100 0 0
Jess Martin County Park
 150 1 0
EL Monte County Park
 100 0 0
William Heise County Park
 850 1 0
Pinecrest
 70 0 0
City of San Diego EL Capitan Reservoir
 300 0 0
Whispering Winds Catholic Conference Cen
 164 0 0
Pinezanita Inc.
 400 0 0
KQ Ranch Resort
 400 0 0
Anza Borrego SP Palm Canyon
 507 0 0
Cuyamaca SP Paso Picacho
 691 0 0
Alpine American Legion
 100 1 0
Cuyamaca Outdoor School
 20 0 0
Stagecoach Trails RV Resort
 600 2 0
Cuyamaca SP Green Valley
 455 0 0
Descanso Fire Station
 34 0 0
All non-community systems
About this data

Water systems are matched to San Diego County, nearest to Rainbow 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.

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.