Tapcensus

Water quality for ZIP code 92106

ZIP 92106 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 10.0 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
Nas North Island & Nab Coronado
 421 0 2.0 mi
Cal-Am Water Coronado
 106,000 1 10.2 mi
Sweetwater Authority
 184,915 0 10.8 mi
San Diego County Water Authority
 0 0 13.8 mi
Helix Water District
 277,918 0 16.3 mi
Del Mar, City of
Del Mar		 3,950 0 17.5 mi
Otay Water District
 242,155 0 18.4 mi
Santa FE I.d.
 21,539 0 20.8 mi
Lakeside WD
 35,500 1 21.5 mi
Poway, City of
Poway		 49,888 0 22.3 mi
MHC TT Inc. (dba Pio Pico)
 23 0 22.5 mi
Padre Dam Mwd
 93,980 0 23.1 mi
Olivenhain Mwd
 86,458 0 23.3 mi
San Dieguito WD
 40,405 1 23.5 mi
Del Dios Mutual Water Company
 330 3 25.9 mi
Rincon del Diablo Mwd (id-A)
 5,016 0 27.7 mi
Rincon del Diablo Mwd (id-1)
 28,427 0 28.5 mi
Carlsbad Mwd
 96,371 0 29.3 mi
Ramona Municipal WD
 36,455 0 29.4 mi
Alpine Oaks Estates LLC
 185 0 30.1 mi
San Pasqual Academy
 298 0 30.7 mi
Escondido, City of
Escondido		 137,044 0 30.8 mi
Vallecitos WD
 114,700 1 31.0 mi
Willowside Terrace Water Association
 100 2 31.2 mi
Sunrise Estates Mutual Water Company
 150 2 31.2 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
Dhs Border Patrol Hwy 94 Checkpoint
 83 2 1
Oakoasis Open Space Preserve
 25 1 0
Diamond Jack's RV Ranch
 115 1 1
Hodges Reservoir Recreation Area
 200 0 0
EL Monte County Park
 100 0 0
Questhaven Municipal Water District
 81 2 0
Skyline Ranch RV Park & Campground
 45 0 0
South Bay Rod & Gun Club Inc.
 18,900 1 0
City of San Diego EL Capitan Reservoir
 300 0 0
Bandy Canyon Ranch Corp
 3,564 0 0
East County Transitional Living Center
 50 1 0
San Pasqual Battlefield State Park
 44 0 0
Alpine American Legion
 100 1 0
ND Daniel's Investment LLC
 106 0 0
Daley Ranch
 200 0 0
Ramona Oaks RV Resort
 250 4 0
Tecate Vista Mutual Water Company
 204 1 1
Muir Industries Inc.
 70 0 0
Tecate Supermarket
 25 0 0
Gsa Tecate Port of Entry
 70 1 0
Descanso Fire Station
 34 0 0
Potrero Elementary School
 300 0 0
Potrero General Store
 75 0 0
Descanso Junction
 100 1 0
All Saints Retreat and Formation Center
 72 2 1
Sutherland Reservoir Recreation Area
 300 1 0
Potrero County Park
 100 1 0
The Oaks Venture, LLC
 220 0 0
Thousand Trails Oakzanita Inc.
 404 0 0
Camp Winacka
 250 0 0
Lake Morena County Park
 300 0 0
Cuyamaca SP Green Valley
 455 0 0
City of San Diego, Camp Morena
 200 0 0
Cuyamaca SP Paso Picacho
 691 0 0
Cuyamaca Outdoor School
 20 0 0
Mountain Empire R.v. Park and Campground
 23 0 0
Auerbach Farms
 68 0 0
Santa Ysabel Nature Center
San Diego 		248 0 0
Mountain Empire High School
 1,000 0 0
Apple Water IS Good
 25 1 0
Spencer Valley School District
 40 2 0
Caltrans, Buckman Springs Rest Area
 25 1 0
Calvary Chapel Julian
 101 1 0
William Heise County Park
 850 1 0
Campo Elementary School
 300 3 0
Freedom Ranch
 235 0 0
Whispering Winds Catholic Conference Cen
 164 0 0
Camp Lockett Middle School
 34 1 1
Sacred Mountain Inn
 30 1 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.