Tapcensus

Water quality for ZIP code 91203

ZIP 91203 covers Glendale 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

Glendale-City, Water Dept. CA1910043 · Community water system · Surface water purchased · Glendale
Serves 192,212 people Rules violated, past 3 years 0 Last sanitary survey Apr 9, 2025 Distance 2.1 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 Los Angeles County

198 systems, nearest first
SystemServesStatusRules violated, 3 yrDistance
Burbank-City, Water Dept.
Burbank		 106,146 0 4.2 mi
Valley Water Co.
 10,113 0 4.9 mi
Crescenta Valley Cwd
 28,162 0 5.3 mi
LA Canada Irrigation Dist.
 9,258 0 5.3 mi
Foothill Municipal Water Dist.
 0 2 6.1 mi
Liberty Utilities Mesa Crest
 1,616 0 6.2 mi
City of South Pasadena
South Pasadena		 25,329 0 6.7 mi
Lincoln Avenue Water Co.
 8,721 0 7.2 mi
Pasadena Water and Power
Pasadena		 165,448 0 7.4 mi
Las Flores Water Co.
 2,211 0 8.1 mi
Rubio Canon Land & Water Association
 6,646 0 8.1 mi
Los Angeles-City, Dept. of Water & Power
Los Angeles		 3,875,566 0 8.7 mi
City of Alhambra
Alhambra		 80,279 0 8.7 mi
Beverly Hills-City, Water Dept.
Beverly Hills		 39,922 0 9.4 mi
Valhalla Water Association
 25 1 9.5 mi
California Water Service Co. Ela
 142,140 0 9.9 mi
Monterey Park-City, Water Dept.
Monterey Park		 61,096 1 10.3 mi
Kinneloa Irrigation Dist.
 1,808 1 10.4 mi
San Gabriel County WD
 40,154 0 10.5 mi
Cal/am Water Company San Marino
 48,065 0 10.6 mi
Vernon-City, Water Dept.
Vernon		 28,112 0 10.8 mi
Sunny Slope Water Co.
 25,252 1 11.1 mi
Gswc-South San Gabriel
 26,451 0 11.3 mi
Los Angeles Cwwd 21-Kagel Canyon
 736 0 11.4 mi
Cal-Am Water Company East Pasadena
 9,963 0 11.5 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
Millard Canyon Improvement Association
 42 1 0
Clear Creek Outdoor Education Center
 105 0 0
Rancho Ybarra Christian Camp
 73 0 0
Usfs-Red Box Station A-3
 25 0 0
Henninger Flats
 50 0 0
Angeles Shooting Ranges
 490 0 0
Usfs-Skyline Park / Mount Wilson A-4
 25 0 0
Colby Ranch-United Methodist Camp
 180 0 0
Usfs-Chantry Flats-A16 Water
 113 0 0
Plant Water Well Rockview Dairy
South Gate 		45 0 0
Martin Marietta Southern Calif Aggregate
 51 0 0
Usfs-Monte Cristo Camp T-4
 116 0 0
Rancho los Amigos Hospital
 3,200 0 0
Irwindale Brewery Yard (iby)
 300 0 0
Acton la North KOA
 400 0 0
Acton Conservation Camp #11
 90 4 0
1000 Trails / Soledad Canyon Preserve
 812 1 0
Angeles Crest Christian Camp
 112 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
Lang Ranch Shopping Center
 28 0 0
Wagon Wheel Plaza
 55 1 0
Agua Dulce Water System
 493 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
Coldbrook Campground
 38 0 0
Texas Canyon Ranger Station
 30 0 0
Usfs-Crystal Lake B-13 Water
 2,000 0 0
Saint Andrews Abbey
 210 1 1
Anchor Retreat Center
 202 0 0
Usfs-Valyermo Ranger Station
 25 1 1
Huttopia Paradise Springs
 302 1 0
Desert Aire Golf Course
 80 0 0
Lockheed Martin Skunk Works
 135 0 0
Los Angeles World Airports
 180 0 0
Camp Elk
 121 0 0
Usfs-Jackson Lake V-4
 805 0 0
Usfs-Appletree Flats V-3
 25 0 0
Northrop Grumman Corp.
 5,764 1 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
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.