Tapcensus

Water quality for ZIP code 90018

ZIP 90018 covers Los Angeles in Los Angeles County, California, one of 295 ZIP codes in the county. 271 active public water systems serve the county; 66 had an EPA violation in the past three years.

Most likely your provider

Los Angeles-City, Dept. of Water & Power CA1910067 · Community water system · Surface water · Los Angeles
Serves 3,875,566 people Rules violated, past 3 years 0 Distance 7.9 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 Los Angeles County

198 systems, nearest first
SystemServesStatusRules violated, 3 yrDistance
Cal/am Water Company Baldwin Hills
 20,724 0 3.4 mi
Gswc Culver City
Santa Fe Springs		 38,233 0 4.7 mi
Inglewood City, Water Dept.
Inglewood		 81,191 0 5.0 mi
Gswc Florence/graham
 63,472 0 5.9 mi
Beverly Hills-City, Water Dept.
Beverly Hills		 39,922 0 5.9 mi
Vernon-City, Water Dept.
Vernon		 28,112 0 6.2 mi
Huntington Park-City, Water Dept.
Huntington Park		 15,437 0 6.7 mi
Walnut Park Mutual Water Co.
 16,180 1 6.9 mi
Maywood Mutual Water Co. #1
 3,851 0 7.7 mi
Hawthorne-City Water Dept.
Hawthorne		 46,039 0 7.9 mi
Maywood Mutual Water Co. #3
 6,059 0 8.0 mi
Maywood Mutual Water Co. #2
 6,349 0 8.0 mi
Tract 349 Mutual Water Co.
 8,700 0 8.4 mi
California Water Service Co. Ela
 142,140 0 8.5 mi
Gswc Southwest
 277,740 0 8.5 mi
South Gate-City, Water Dept.
South Gate		 88,544 0 8.8 mi
Gswc Willowbrook
 10,793 0 8.9 mi
Tract 180 Mutual Water Co.
 14,000 1 9.1 mi
EL Segundo-City, Water Dept.
El Segundo		 16,777 0 9.1 mi
Liberty Utilities Compton
 26,316 0 9.2 mi
Gswc Bell, Bell Gardens
 55,050 0 9.3 mi
Santa Monica-City, Water Division
Santa Monica		 90,729 0 9.4 mi
Lynwood Park Mutual Water Co.
 1,564 1 9.5 mi
Suburban Water Systems Sativa
 4,372 0 9.6 mi
Commerce-City, Water Dept.
Montebello		 3,598 0 9.7 mi
All 199 community water systems in Los Angeles County
Non-community systems in Los Angeles County (72: schools, campgrounds, workplaces, restaurants)

These systems serve places you visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Young-Nak Presbyterian Church
 25 0 0
Plant Water Well Rockview Dairy
South Gate 		45 0 0
Rancho los Amigos Hospital
 3,200 0 0
Millard Canyon Improvement Association
 42 1 0
Henninger Flats
 50 0 0
Clear Creek Outdoor Education Center
 105 0 0
Usfs-Red Box Station A-3
 25 0 0
Rancho Ybarra Christian Camp
 73 0 0
Angeles Shooting Ranges
 490 0 0
Martin Marietta Southern Calif Aggregate
 51 0 0
Usfs-Chantry Flats-A16 Water
 113 0 0
Usfs-Skyline Park / Mount Wilson A-4
 25 0 0
Colby Ranch-United Methodist Camp
 180 0 0
Irwindale Brewery Yard (iby)
 300 0 0
Usfs-Monte Cristo Camp T-4
 116 0 0
Acton Conservation Camp #11
 90 4 0
Acton la North KOA
 400 0 0
Angeles Crest Christian Camp
 112 1 0
1000 Trails / Soledad Canyon Preserve
 812 1 0
Usfs-Chilao Main A-9
 50 0 0
Acton Four Square Church
 50 0 0
Acton-Agua Dulce Lds Church
 150 0 0
Vasquez Rocks County Park
 30 0 0
Ilead Agua Dulce Charter School
 450 1 1
Agua Dulce Women's Club
 50 0 0
Wagon Wheel Plaza
 55 1 0
Lang Ranch Shopping Center
 28 0 0
Agua Dulce Water System
 493 0 0
Coldbrook Campground
 38 0 0
LE Chene Restaurant Water System
 100 0 0
Agua Dulce Winery
 113 0 0
Texas Canyon Ranger Station
 30 0 0
Shepherd of the Hills
 80 0 0
Living Springs Church
 50 0 0
Usfs-Crystal Lake B-13 Water
 2,000 0 0
Saint Andrews Abbey
 210 1 1
Anchor Retreat Center
 202 0 0
Huttopia Paradise Springs
 302 1 0
Usfs-Valyermo Ranger Station
 25 1 1
Camp Elk
 121 0 0
Usfs-Jackson Lake V-4
 805 0 0
Desert Aire Golf Course
 80 0 0
Lockheed Martin Skunk Works
 135 0 0
Usfs-Appletree Flats V-3
 25 0 0
Los Angeles World Airports
 180 0 0
Los Angeles, City of Castaic Pwr Plant
 55 0 0
Mountain High East Ski Area
 150 0 0
Mount Kare Camp/kare Youth League
 59 0 0
Usfs-Big Pines V-2
 54 0 0
Northrop Grumman Corp.
 5,764 1 0
All non-community systems
About this data

Water systems are matched to Los Angeles 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.