Tapcensus

Water quality for ZIP code 92036

ZIP 92036 covers Julian 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

Butterfield Ranch CA3701184 · Community water system · Ground water
Serves 350 people Rules violated, past 3 years 2 Unresolved 1 Last sanitary survey Jul 17, 2024 Distance 4.5 mi
View system details EPA facility report

Other community water systems in San Diego County

81 systems, nearest first
SystemServesStatusRules violated, 3 yrDistance
Cuyamaca Water District
 160 0 5.5 mi
H & J Water Company
 86 1 5.9 mi
Majestic Pines Community SD
 1,768 1 6.1 mi
LA Cima Fire Center
 60 0 6.3 mi
Richardson Beardsley Park Inc.
 30 1 6.7 mi
Julian Community Services District
 617 3 7.1 mi
North Peak Mutual Water Company
 294 0 7.3 mi
Camp Stevens
 28 1 7.4 mi
Pine Hills Mutual Water Company
 380 2 7.9 mi
Wynola Water District
 140 2 10.8 mi
Laguna Mountain Mutual Water Co.
 100 0 11.5 mi
Heavenly Oaks
 300 1 12.6 mi
Pine Valley Trailer Park
 200 0 12.6 mi
Pine Valley Bible Conference Center
 50 0 12.6 mi
Descanso Community Water District
 870 3 13.3 mi
Pine Valley Mutual WC
 2,574 1 13.5 mi
Guatay Mutual Benefit Corporation
 100 4 13.9 mi
Rancho Santa Teresa MW Co.
 102 2 17.6 mi
Borrego WD
 3,429 1 18.4 mi
Willowside Terrace Water Association
 100 2 18.5 mi
Alpine Oaks Estates LLC
 185 0 19.4 mi
Los Tules Mutual Water Company
 260 1 19.5 mi
Ocotillo Oasis, LLC
 96 3 20.8 mi
Lake Henshaw Resort Inc.
 108 0 21.3 mi
Ramona Municipal WD
 36,455 0 23.0 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
KQ Ranch Resort
 400 0 0
Pinezanita Inc.
 400 0 0
Stagecoach Trails RV Resort
 600 2 0
Whispering Winds Catholic Conference Cen
 164 0 0
Pinecrest
 70 0 0
Anza Borrego SP Vallecito
 31 0 0
William Heise County Park
 850 1 0
Cuyamaca SP Paso Picacho
 691 0 0
Jess Martin County Park
 150 1 0
Nickel Beer Water Company
San Diego 		100 0 0
Julian Oaks Camp
 72 0 0
Cuyamaca Outdoor School
 20 0 0
Sacred Mountain Inn
 30 1 0
Camp Cedar Glen
 65 1 0
Camp Winacka
 250 0 0
Vallecito County Park
 145 1 0
Cuyamaca SP Green Valley
 455 0 0
Calvary Chapel Julian
 101 1 0
Apple Water IS Good
 25 1 0
Spencer Valley School District
 40 2 0
Mount Laguna Improvement Assn.
 580 1 1
Thousand Trails Oakzanita Inc.
 404 0 0
Mount Laguna Water System
 3,500 0 0
Santa Ysabel Nature Center
San Diego 		248 0 0
Agua Caliente County Park
 400 0 0
Auerbach Farms
 68 0 0
Descanso Fire Station
 34 0 0
All Saints Retreat and Formation Center
 72 2 1
Descanso Junction
 100 1 0
The Oaks Venture, LLC
 220 0 0
Mataguay Scout Reservation
 4,000 1 0
Cibbetts Flats Campground
 25 0 0
Anza Borrego SP Palm Canyon
 507 0 0
Sutherland Reservoir Recreation Area
 300 1 0
Caltrans, Buckman Springs Rest Area
 25 1 0
Ramona Oaks RV Resort
 250 4 0
San Diego Mountain Lodge
 26,641 3 0
Warner Unified School District
 250 1 0
Alpine American Legion
 100 1 0
Warner Springs Ranch Resort LLC
 32 2 1
Mountain Empire High School
 1,000 0 0
Desert Ironwoods Resort Inc.
 25 0 0
City of San Diego EL Capitan Reservoir
 300 0 0
Ocotillo Wells Svra HQ
 50 1 0
Pine Valley Border Patrol Station
 54 0 0
City of San Diego, Camp Morena
 200 0 0
Leapin' Lizard RV Ranch
 70 0 0
Ocotillo Wells RV Park & Store
 44 0 0
EL Monte County Park
 100 0 0
Mobiland Camper Park
 2,000 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.