Tapcensus

Water quality for ZIP code 92040

ZIP 92040 covers Lakeside, Eucalyptus Hills, Winter Gardens, and Santee 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

Lakeside WD CA3710013 · Community water system · Surface water purchased
Serves 35,500 people Rules violated, past 3 years 1 Last sanitary survey Nov 19, 2025 Distance 2.8 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
Padre Dam Mwd
 93,980 0 5.1 mi
Ramona Municipal WD
 36,455 0 7.8 mi
Poway, City of
Poway		 49,888 0 9.7 mi
Helix Water District
 277,918 0 9.8 mi
Alpine Oaks Estates LLC
 185 0 10.3 mi
San Diego County Water Authority
 0 0 10.5 mi
Willowside Terrace Water Association
 100 2 11.1 mi
San Pasqual Academy
 298 0 12.6 mi
Rancho Santa Teresa MW Co.
 102 2 12.8 mi
Rincon del Diablo Mwd (id-A)
 5,016 0 14.6 mi
San Diego, City of
San Diego		 1,408,937 0 15.4 mi
Descanso Community Water District
 870 3 16.4 mi
Otay Water District
 242,155 0 16.6 mi
North Peak Mutual Water Company
 294 0 17.4 mi
Del Dios Mutual Water Company
 330 3 17.4 mi
MHC TT Inc. (dba Pio Pico)
 23 0 17.9 mi
Escondido, City of
Escondido		 137,044 0 18.1 mi
Pine Hills Mutual Water Company
 380 2 18.1 mi
Oakvale Park
 260 3 18.8 mi
Cuyamaca Water District
 160 0 18.9 mi
Rincon del Diablo Mwd (id-1)
 28,427 0 18.9 mi
Wynola Water District
 140 2 19.0 mi
Heavenly Oaks
 300 1 19.2 mi
Richardson Beardsley Park Inc.
 30 1 19.5 mi
Lake Wohlford Resort
 250 0 19.5 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
Oakoasis Open Space Preserve
 25 1 0
EL Monte County Park
 100 0 0
Sycamore Canyon / Goodan Ranch
 50 0 0
City of San Diego EL Capitan Reservoir
 300 0 0
Alpine American Legion
 100 1 0
Bandy Canyon Ranch Corp
 3,564 0 0
Ramona Oaks RV Resort
 250 4 0
San Pasqual Battlefield State Park
 44 0 0
Diamond Jack's RV Ranch
 115 1 1
Skyline Ranch RV Park & Campground
 45 0 0
Sutherland Reservoir Recreation Area
 300 1 0
The Oaks Venture, LLC
 220 0 0
Descanso Fire Station
 34 0 0
Hodges Reservoir Recreation Area
 200 0 0
Descanso Junction
 100 1 0
All Saints Retreat and Formation Center
 72 2 1
Camp Winacka
 250 0 0
Dhs Border Patrol Hwy 94 Checkpoint
 83 2 1
Cuyamaca SP Paso Picacho
 691 0 0
Thousand Trails Oakzanita Inc.
 404 0 0
Auerbach Farms
 68 0 0
Cuyamaca SP Green Valley
 455 0 0
Santa Ysabel Nature Center
San Diego 		248 0 0
Apple Water IS Good
 25 1 0
Cuyamaca Outdoor School
 20 0 0
Spencer Valley School District
 40 2 0
Calvary Chapel Julian
 101 1 0
William Heise County Park
 850 1 0
Questhaven Municipal Water District
 81 2 0
Whispering Winds Catholic Conference Cen
 164 0 0
Sacred Mountain Inn
 30 1 0
Jess Martin County Park
 150 1 0
Daley Ranch
 200 0 0
Pinezanita Inc.
 400 0 0
Pinecrest
 70 0 0
Nickel Beer Water Company
San Diego 		100 0 0
Julian Oaks Camp
 72 0 0
KQ Ranch Resort
 400 0 0
South Bay Rod & Gun Club Inc.
 18,900 1 0
East County Transitional Living Center
 50 1 0
Camp Cedar Glen
 65 1 0
San Diego Mountain Lodge
 26,641 3 0
ND Daniel's Investment LLC
 106 0 0
Mataguay Scout Reservation
 4,000 1 0
Rey River Ranch Corp.
 12 0 0
Camp Denver Fox
 86 1 1
Mount Laguna Water System
 3,500 0 0
Caltrans, Buckman Springs Rest Area
 25 1 0
City of San Diego, Camp Morena
 200 0 0
Lake Morena County Park
 300 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.