Tapcensus

Water quality for ZIP code 92135

ZIP 92135 covers Coronado 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

Nas North Island & Nab Coronado CA3710750 · Community water system · Surface water purchased
Serves 421 people Rules violated, past 3 years 0 Last sanitary survey Mar 12, 2024 Distance 0.8 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
Cal-Am Water Coronado
 106,000 1 7.6 mi
Sweetwater Authority
 184,915 0 8.1 mi
San Diego, City of
San Diego		 1,408,937 0 10.1 mi
San Diego County Water Authority
 0 0 12.6 mi
Helix Water District
 277,918 0 14.4 mi
Otay Water District
 242,155 0 15.8 mi
Del Mar, City of
Del Mar		 3,950 0 19.0 mi
MHC TT Inc. (dba Pio Pico)
 23 0 19.9 mi
Lakeside WD
 35,500 1 20.3 mi
Padre Dam Mwd
 93,980 0 21.4 mi
Santa FE I.d.
 21,539 0 22.0 mi
Poway, City of
Poway		 49,888 0 22.2 mi
Olivenhain Mwd
 86,458 0 24.4 mi
San Dieguito WD
 40,405 1 25.1 mi
Del Dios Mutual Water Company
 330 3 26.6 mi
Rincon del Diablo Mwd (id-A)
 5,016 0 27.9 mi
Alpine Oaks Estates LLC
 185 0 28.2 mi
Sunrise Estates Mutual Water Company
 150 2 28.7 mi
Ramona Municipal WD
 36,455 0 28.7 mi
Willowside Terrace Water Association
 100 2 29.2 mi
Rincon del Diablo Mwd (id-1)
 28,427 0 29.2 mi
Barrett Lake MH and RV LLC
 300 1 29.7 mi
San Pasqual Academy
 298 0 30.5 mi
Carlsbad Mwd
 96,371 0 30.9 mi
Escondido, City of
Escondido		 137,044 0 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
Diamond Jack's RV Ranch
 115 1 1
Oakoasis Open Space Preserve
 25 1 0
EL Monte County Park
 100 0 0
Skyline Ranch RV Park & Campground
 45 0 0
South Bay Rod & Gun Club Inc.
 18,900 1 0
Hodges Reservoir Recreation Area
 200 0 0
City of San Diego EL Capitan Reservoir
 300 0 0
East County Transitional Living Center
 50 1 0
Questhaven Municipal Water District
 81 2 0
Alpine American Legion
 100 1 0
ND Daniel's Investment LLC
 106 0 0
Bandy Canyon Ranch Corp
 3,564 0 0
San Pasqual Battlefield State Park
 44 0 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
Potrero Elementary School
 300 0 0
Daley Ranch
 200 0 0
Potrero General Store
 75 0 0
Descanso Fire Station
 34 0 0
Ramona Oaks RV Resort
 250 4 0
Descanso Junction
 100 1 0
Potrero County Park
 100 1 0
All Saints Retreat and Formation Center
 72 2 1
Sutherland Reservoir Recreation Area
 300 1 0
The Oaks Venture, LLC
 220 0 0
Thousand Trails Oakzanita Inc.
 404 0 0
Lake Morena County Park
 300 0 0
City of San Diego, Camp Morena
 200 0 0
Cuyamaca SP Green Valley
 455 0 0
Mountain Empire R.v. Park and Campground
 23 0 0
Camp Winacka
 250 0 0
Cuyamaca SP Paso Picacho
 691 0 0
Cuyamaca Outdoor School
 20 0 0
Mountain Empire High School
 1,000 0 0
Caltrans, Buckman Springs Rest Area
 25 1 0
Campo Elementary School
 300 3 0
Freedom Ranch
 235 0 0
Auerbach Farms
 68 0 0
Santa Ysabel Nature Center
San Diego 		248 0 0
Camp Lockett Middle School
 34 1 1
William Heise County Park
 850 1 0
San Ysidro Health Mhfm
 30 1 0
Cameron Corners
 50 0 0
Apple Water IS Good
 25 1 0
Campo Group LLC
 50 0 0
Spencer Valley School District
 40 2 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.