Tapcensus

Water quality in Gardena, California

Gardena is in Los Angeles County. 271 active public water systems serve the county; 66 had an EPA violation in the past three years.

Most likely your provider

Gswc Southwest CA1910155 · Community water system · Surface water purchased
Serves 277,740 people Rules violated, past 3 years 0 Last sanitary survey Jun 28, 2023 Distance 0.9 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
Hawthorne-City Water Dept.
Hawthorne		 46,039 0 2.8 mi
Liberty Utilities Compton
 26,316 0 3.2 mi
California Water Service Co. Dominguez
 149,490 0 4.4 mi
Torrance-City, Water Dept.
Torrance		 106,183 0 4.4 mi
Suburban Water Systems Sativa
 4,372 0 4.5 mi
Gswc Willowbrook
 10,793 0 4.5 mi
Compton-City, Water Dept.
Compton		 90,986 0 4.7 mi
Lynwood Park Mutual Water Co.
 1,564 1 4.9 mi
Inglewood City, Water Dept.
Inglewood		 81,191 0 5.1 mi
Manhattan Beach-City, Water Dept.
Manhattan Beach		 34,051 0 5.2 mi
California Water Service Co. Herm/redo
 100,072 0 5.2 mi
EL Segundo-City, Water Dept.
El Segundo		 16,777 0 5.6 mi
Gswc Florence/graham
 63,472 0 6.3 mi
Lynwood-City, Water Dept.
Lynwood		 66,967 0 6.4 mi
Liberty Utilities Lynwood
 24,649 0 6.5 mi
Lomita-City, Water Dept.
Lomita		 20,256 0 6.9 mi
Walnut Park Mutual Water Co.
 16,180 1 7.1 mi
South Gate-City, Water Dept.
South Gate		 88,544 0 7.3 mi
Cal/am Water Company Baldwin Hills
 20,724 0 7.4 mi
Huntington Park-City, Water Dept.
Huntington Park		 15,437 0 7.8 mi
Paramount City, Water Dept.
Paramount		 55,200 0 8.1 mi
Tract 349 Mutual Water Co.
 8,700 0 8.2 mi
Gswc Hollydale
 8,099 0 8.3 mi
Tract 180 Mutual Water Co.
 14,000 1 8.7 mi
Maywood Mutual Water Co. #1
 3,851 0 9.1 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
Rancho los Amigos Hospital
 3,200 0 0
Plant Water Well Rockview Dairy
South Gate 		45 0 0
Young-Nak Presbyterian Church
 25 0 0
Martin Marietta Southern Calif Aggregate
 51 0 0
Millard Canyon Improvement Association
 42 1 0
Henninger Flats
 50 0 0
Usfs-Chantry Flats-A16 Water
 113 0 0
Irwindale Brewery Yard (iby)
 300 0 0
Usfs-Red Box Station A-3
 25 0 0
Usfs-Skyline Park / Mount Wilson A-4
 25 0 0
Clear Creek Outdoor Education Center
 105 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
Coldbrook Campground
 38 0 0
1000 Trails / Soledad Canyon Preserve
 812 1 0
Usfs-Crystal Lake B-13 Water
 2,000 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
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
Huttopia Paradise Springs
 302 1 0
Saint Andrews Abbey
 210 1 1
Usfs-Valyermo Ranger Station
 25 1 1
Camp Elk
 121 0 0
Usfs-Jackson Lake V-4
 805 0 0
Anchor Retreat Center
 202 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
Los Angeles, City of Castaic Pwr Plant
 55 0 0
Northrop Grumman Corp.
 5,764 1 0
All non-community systems
About this data

Water systems are matched to Los Angeles County, nearest to Gardena 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.