Tapcensus

Water quality for ZIP code 90011

ZIP 90011 covers Los Angeles and Florence-Graham 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 11.3 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
Vernon-City, Water Dept.
Vernon		 28,112 0 2.6 mi
Gswc Florence/graham
 63,472 0 2.7 mi
Huntington Park-City, Water Dept.
Huntington Park		 15,437 0 3.0 mi
Walnut Park Mutual Water Co.
 16,180 1 3.4 mi
Maywood Mutual Water Co. #1
 3,851 0 4.0 mi
Maywood Mutual Water Co. #3
 6,059 0 4.3 mi
Maywood Mutual Water Co. #2
 6,349 0 4.3 mi
Tract 349 Mutual Water Co.
 8,700 0 4.8 mi
South Gate-City, Water Dept.
South Gate		 88,544 0 5.3 mi
California Water Service Co. Ela
 142,140 0 5.4 mi
Tract 180 Mutual Water Co.
 14,000 1 5.5 mi
Gswc Bell, Bell Gardens
 55,050 0 5.7 mi
Cal/am Water Company Baldwin Hills
 20,724 0 5.8 mi
Inglewood City, Water Dept.
Inglewood		 81,191 0 5.9 mi
Commerce-City, Water Dept.
Montebello		 3,598 0 6.2 mi
Gswc Willowbrook
 10,793 0 6.2 mi
Lynwood-City, Water Dept.
Lynwood		 66,967 0 6.5 mi
Lynwood Park Mutual Water Co.
 1,564 1 6.7 mi
City of Bell Gardens
Bell Gardens		 11,413 0 6.8 mi
Suburban Water Systems Sativa
 4,372 0 6.9 mi
Liberty Utilities Compton
 26,316 0 7.0 mi
San Gabriel Valley Water Co-Montebello 2
Montebello		 3,731 0 7.7 mi
Gswc Southwest
 277,740 0 7.7 mi
Gswc Culver City
Santa Fe Springs		 38,233 0 7.8 mi
Monterey Park-City, Water Dept.
Monterey Park		 61,096 1 7.8 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
Martin Marietta Southern Calif Aggregate
 51 0 0
Usfs-Chantry Flats-A16 Water
 113 0 0
Usfs-Red Box Station A-3
 25 0 0
Clear Creek Outdoor Education Center
 105 0 0
Usfs-Skyline Park / Mount Wilson A-4
 25 0 0
Irwindale Brewery Yard (iby)
 300 0 0
Rancho Ybarra Christian Camp
 73 0 0
Angeles Shooting Ranges
 490 0 0
Colby Ranch-United Methodist Camp
 180 0 0
Usfs-Monte Cristo Camp T-4
 116 0 0
Angeles Crest Christian Camp
 112 1 0
Usfs-Chilao Main A-9
 50 0 0
Acton la North KOA
 400 0 0
Acton Conservation Camp #11
 90 4 0
1000 Trails / Soledad Canyon Preserve
 812 1 0
Coldbrook Campground
 38 0 0
Acton Four Square Church
 50 0 0
Acton-Agua Dulce Lds Church
 150 0 0
Usfs-Crystal Lake B-13 Water
 2,000 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
LE Chene Restaurant Water System
 100 0 0
Agua Dulce Winery
 113 0 0
Shepherd of the Hills
 80 0 0
Living Springs Church
 50 0 0
Texas Canyon Ranger Station
 30 0 0
Saint Andrews Abbey
 210 1 1
Huttopia Paradise Springs
 302 1 0
Usfs-Valyermo Ranger Station
 25 1 1
Camp Elk
 121 0 0
Anchor Retreat Center
 202 0 0
Usfs-Jackson Lake V-4
 805 0 0
Usfs-Appletree Flats V-3
 25 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
Desert Aire Golf Course
 80 0 0
Lockheed Martin Skunk Works
 135 0 0
Los Angeles World Airports
 180 0 0
Northrop Grumman Corp.
 5,764 1 0
Los Angeles, City of Castaic Pwr Plant
 55 0 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.