Tapcensus

Water quality in Crest, California

Crest is in San Diego County. 198 active public water systems serve the county; 83 had an EPA violation in the past three years.

Most likely your provider

Helix Water District CA3710010 · Community water system · Surface water
Serves 277,918 people Rules violated, past 3 years 0 Last sanitary survey Feb 25, 2026 Distance 6.1 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 2.6 mi
Lakeside WD
 35,500 1 6.4 mi
Alpine Oaks Estates LLC
 185 0 7.8 mi
Willowside Terrace Water Association
 100 2 8.8 mi
Otay Water District
 242,155 0 9.6 mi
San Diego County Water Authority
 0 0 10.1 mi
MHC TT Inc. (dba Pio Pico)
 23 0 10.3 mi
Sunrise Estates Mutual Water Company
 150 2 13.6 mi
Descanso Community Water District
 870 3 15.2 mi
Ramona Municipal WD
 36,455 0 15.4 mi
Sweetwater Authority
 184,915 0 15.6 mi
Barrett Lake MH and RV LLC
 300 1 16.0 mi
Poway, City of
Poway		 49,888 0 16.0 mi
San Diego, City of
San Diego		 1,408,937 0 16.1 mi
Heavenly Oaks
 300 1 17.7 mi
Pine Valley Trailer Park
 200 0 18.3 mi
Twin Lakes Resort
 400 5 19.2 mi
Guatay Mutual Benefit Corporation
 100 4 19.5 mi
Rancho Santa Teresa MW Co.
 102 2 19.5 mi
Pine Valley Bible Conference Center
 50 0 19.8 mi
Pine Valley Mutual WC
 2,574 1 19.8 mi
Cal-Am Water Coronado
 106,000 1 19.8 mi
San Pasqual Academy
 298 0 20.3 mi
North Peak Mutual Water Company
 294 0 20.5 mi
Nas North Island & Nab Coronado
 421 0 20.9 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
Diamond Jack's RV Ranch
 115 1 1
EL Monte County Park
 100 0 0
City of San Diego EL Capitan Reservoir
 300 0 0
Skyline Ranch RV Park & Campground
 45 0 0
Alpine American Legion
 100 1 0
Oakoasis Open Space Preserve
 25 1 0
Dhs Border Patrol Hwy 94 Checkpoint
 83 2 1
Sycamore Canyon / Goodan Ranch
 50 0 0
South Bay Rod & Gun Club Inc.
 18,900 1 0
Descanso Fire Station
 34 0 0
East County Transitional Living Center
 50 1 0
Descanso Junction
 100 1 0
All Saints Retreat and Formation Center
 72 2 1
ND Daniel's Investment LLC
 106 0 0
Thousand Trails Oakzanita Inc.
 404 0 0
Cuyamaca SP Green Valley
 455 0 0
Ramona Oaks RV Resort
 250 4 0
Potrero Elementary School
 300 0 0
Cuyamaca Outdoor School
 20 0 0
Bandy Canyon Ranch Corp
 3,564 0 0
Cuyamaca SP Paso Picacho
 691 0 0
Potrero General Store
 75 0 0
Potrero County Park
 100 1 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
Camp Winacka
 250 0 0
San Pasqual Battlefield State Park
 44 0 0
Lake Morena County Park
 300 0 0
City of San Diego, Camp Morena
 200 0 0
The Oaks Venture, LLC
 220 0 0
Sutherland Reservoir Recreation Area
 300 1 0
Caltrans, Buckman Springs Rest Area
 25 1 0
Mountain Empire High School
 1,000 0 0
William Heise County Park
 850 1 0
Hodges Reservoir Recreation Area
 200 0 0
Whispering Winds Catholic Conference Cen
 164 0 0
Cibbetts Flats Campground
 25 0 0
Mount Laguna Water System
 3,500 0 0
Pinezanita Inc.
 400 0 0
Apple Water IS Good
 25 1 0
Calvary Chapel Julian
 101 1 0
Pinecrest
 70 0 0
Spencer Valley School District
 40 2 0
Auerbach Farms
 68 0 0
Santa Ysabel Nature Center
San Diego 		248 0 0
KQ Ranch Resort
 400 0 0
Freedom Ranch
 235 0 0
Jess Martin County Park
 150 1 0
All non-community systems
About this data

Water systems are matched to San Diego County, nearest to Crest 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.

Town locations and ZIP code areas come from U.S. Census Bureau 2020 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.