Tapcensus

Water quality for ZIP code 92124

ZIP 92124 covers San Diego in San Diego County, California, one of 115 ZIP codes in the county. 198 active public water systems serve the county; 83 had an EPA violation in the past three years.

Most likely your provider

San Diego, City of CA3710020 · Community water system · Surface water · San Diego
Serves 1,408,937 people Rules violated, past 3 years 0 Last sanitary survey Apr 15, 2026 Distance 3.3 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
San Diego County Water Authority
 0 0 2.7 mi
Helix Water District
 277,918 0 7.3 mi
Lakeside WD
 35,500 1 10.1 mi
Nas North Island & Nab Coronado
 421 0 11.2 mi
Poway, City of
Poway		 49,888 0 11.3 mi
Sweetwater Authority
 184,915 0 12.3 mi
Padre Dam Mwd
 93,980 0 12.6 mi
Del Mar, City of
Del Mar		 3,950 0 13.9 mi
Otay Water District
 242,155 0 14.3 mi
Santa FE I.d.
 21,539 0 15.0 mi
Cal-Am Water Coronado
 106,000 1 15.4 mi
Olivenhain Mwd
 86,458 0 16.3 mi
Del Dios Mutual Water Company
 330 3 17.1 mi
Rincon del Diablo Mwd (id-A)
 5,016 0 17.5 mi
Ramona Municipal WD
 36,455 0 17.6 mi
MHC TT Inc. (dba Pio Pico)
 23 0 18.0 mi
San Dieguito WD
 40,405 1 19.2 mi
San Pasqual Academy
 298 0 19.5 mi
Rincon del Diablo Mwd (id-1)
 28,427 0 19.7 mi
Alpine Oaks Estates LLC
 185 0 20.1 mi
Escondido, City of
Escondido		 137,044 0 21.1 mi
Willowside Terrace Water Association
 100 2 21.2 mi
Vallecitos WD
 114,700 1 23.3 mi
Oakvale Park
 260 3 24.1 mi
Rancho Santa Teresa MW Co.
 102 2 24.2 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
Sycamore Canyon / Goodan Ranch
 50 0 0
Oakoasis Open Space Preserve
 25 1 0
EL Monte County Park
 100 0 0
Hodges Reservoir Recreation Area
 200 0 0
City of San Diego EL Capitan Reservoir
 300 0 0
Diamond Jack's RV Ranch
 115 1 1
Bandy Canyon Ranch Corp
 3,564 0 0
Questhaven Municipal Water District
 81 2 0
San Pasqual Battlefield State Park
 44 0 0
Skyline Ranch RV Park & Campground
 45 0 0
Dhs Border Patrol Hwy 94 Checkpoint
 83 2 1
Alpine American Legion
 100 1 0
South Bay Rod & Gun Club Inc.
 18,900 1 0
Ramona Oaks RV Resort
 250 4 0
Daley Ranch
 200 0 0
East County Transitional Living Center
 50 1 0
Sutherland Reservoir Recreation Area
 300 1 0
ND Daniel's Investment LLC
 106 0 0
Descanso Fire Station
 34 0 0
The Oaks Venture, LLC
 220 0 0
Descanso Junction
 100 1 0
All Saints Retreat and Formation Center
 72 2 1
Camp Winacka
 250 0 0
Thousand Trails Oakzanita Inc.
 404 0 0
Cuyamaca SP Paso Picacho
 691 0 0
Auerbach Farms
 68 0 0
Cuyamaca SP Green Valley
 455 0 0
Santa Ysabel Nature Center
San Diego 		248 0 0
Cuyamaca Outdoor School
 20 0 0
Potrero Elementary School
 300 0 0
Tecate Vista Mutual Water Company
 204 1 1
Apple Water IS Good
 25 1 0
Spencer Valley School District
 40 2 0
Muir Industries Inc.
 70 0 0
Calvary Chapel Julian
 101 1 0
Potrero General Store
 75 0 0
Tecate Supermarket
 25 0 0
Gsa Tecate Port of Entry
 70 1 0
William Heise County Park
 850 1 0
Potrero County Park
 100 1 0
Sacred Mountain Inn
 30 1 0
Whispering Winds Catholic Conference Cen
 164 0 0
Jess Martin County Park
 150 1 0
San Diego Mountain Lodge
 26,641 3 0
Pinezanita Inc.
 400 0 0
Nickel Beer Water Company
San Diego 		100 0 0
Pinecrest
 70 0 0
Julian Oaks Camp
 72 0 0
Lake Morena County Park
 300 0 0
City of San Diego, Camp Morena
 200 0 0
All non-community systems
About this data

Water systems are matched to San Diego County, the county this ZIP code lies in, nearest to the ZIP code's centre 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.

ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA 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.