Tapcensus

Water quality for ZIP code 90723

ZIP 90723 covers Paramount, Bellflower, and Lynwood 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

Paramount City, Water Dept. CA1910105 · Community water system · Surface water purchased · Paramount
Serves 55,200 people Rules violated, past 3 years 0 Last sanitary survey Oct 16, 2025 Distance 0.2 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
Gswc Hollydale
 8,099 0 1.3 mi
Liberty Utilities Lynwood
 24,649 0 1.6 mi
Bellflower Home Garden Water Company
 1,129 1 2.2 mi
Bellflower Somerset Mwc
 46,300 0 2.7 mi
Lynwood-City, Water Dept.
Lynwood		 66,967 0 2.7 mi
Compton-City, Water Dept.
Compton		 90,986 0 3.3 mi
Downey City, Water Dept.
Downey		 110,556 0 3.4 mi
Lynwood Park Mutual Water Co.
 1,564 1 3.5 mi
Suburban Water Systems Sativa
 4,372 0 3.8 mi
South Gate-City, Water Dept.
South Gate		 88,544 0 3.9 mi
Lakewood City, Water Dept.
Lakewood		 66,356 0 4.0 mi
Liberty Utilities Bellflower-Norwalk
 72,472 0 4.1 mi
Gswc Willowbrook
 10,793 0 4.2 mi
Tract 180 Mutual Water Co.
 14,000 1 4.5 mi
Norwalk City, Water Dept.
Norwalk		 20,283 1 4.8 mi
Tract 349 Mutual Water Co.
 8,700 0 4.8 mi
Gswc Bell, Bell Gardens
 55,050 0 4.8 mi
Liberty Utilities Compton
 26,316 0 5.0 mi
City of Bell Gardens
Bell Gardens		 11,413 0 5.2 mi
Walnut Park Mutual Water Co.
 16,180 1 5.7 mi
Gswc Norwalk
 43,167 0 5.9 mi
Cerritos City, Water Dept.
Cerritos		 46,851 1 6.0 mi
Maywood Mutual Water Co. #1
 3,851 0 6.2 mi
Maywood Mutual Water Co. #2
 6,349 0 6.2 mi
Maywood Mutual Water Co. #3
 6,059 0 6.2 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
Irwindale Brewery Yard (iby)
 300 0 0
Henninger Flats
 50 0 0
Millard Canyon Improvement Association
 42 1 0
Usfs-Chantry Flats-A16 Water
 113 0 0
Usfs-Skyline Park / Mount Wilson A-4
 25 0 0
Usfs-Red Box Station A-3
 25 0 0
Clear Creek Outdoor Education Center
 105 0 0
Colby Ranch-United Methodist Camp
 180 0 0
Rancho Ybarra Christian Camp
 73 0 0
Angeles Shooting Ranges
 490 0 0
Usfs-Monte Cristo Camp T-4
 116 0 0
Coldbrook Campground
 38 0 0
Angeles Crest Christian Camp
 112 1 0
Usfs-Chilao Main A-9
 50 0 0
Usfs-Crystal Lake B-13 Water
 2,000 0 0
Acton la North KOA
 400 0 0
1000 Trails / Soledad Canyon Preserve
 812 1 0
Acton Conservation Camp #11
 90 4 0
Acton Four Square Church
 50 0 0
Acton-Agua Dulce Lds Church
 150 0 0
Huttopia Paradise Springs
 302 1 0
Saint Andrews Abbey
 210 1 1
Vasquez Rocks County Park
 30 0 0
Ilead Agua Dulce Charter School
 450 1 1
Usfs-Valyermo Ranger Station
 25 1 1
Agua Dulce Women's Club
 50 0 0
Camp Elk
 121 0 0
Lang Ranch Shopping Center
 28 0 0
Wagon Wheel Plaza
 55 1 0
Agua Dulce Water System
 493 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
Agua Dulce Winery
 113 0 0
LE Chene Restaurant Water System
 100 0 0
Shepherd of the Hills
 80 0 0
Living Springs Church
 50 0 0
Texas Canyon Ranger Station
 30 0 0
Anchor Retreat Center
 202 0 0
Desert Aire Golf Course
 80 0 0
Los Angeles World Airports
 180 0 0
Lockheed Martin Skunk Works
 135 0 0
Northrop Grumman Corp.
 5,764 1 0
Lancaster National Soccer Center
Lancaster 		500 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.