Tapcensus

Water quality in Glendora, California

Glendora 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

Glendora-City, Water Dept. CA1910044 · Community water system · Surface water purchased · Glendora
Serves 44,411 people Rules violated, past 3 years 0 Last sanitary survey Jul 29, 2025 Distance under 0.1 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
Suburban Water Systems-Glendora
 5,301 0 1.8 mi
Gswc-San Dimas
 56,564 0 3.0 mi
Covina Valley Water Company Wholesale
 0 0 3.0 mi
Metropolitan Water Dist. of So. Cal.
 0 0 3.6 mi
Suburban Water Systems-Covina Knolls
 1,451 0 3.8 mi
Azusa Light and Water
 110,044 0 3.8 mi
Covina-City, Water Dept.
Covina		 33,300 0 3.8 mi
LA Verne, City WD
La Verne		 31,334 0 5.1 mi
Valencia Heights Water Co.
 7,775 0 5.3 mi
Calif State Polytechnical Univ Pomona
 2,668 2 5.6 mi
Three Valleys Mwd
 0 0 5.6 mi
Cal-Am Water Company Duarte
 24,767 0 6.5 mi
Valley County Water Dist.
 68,871 0 6.7 mi
Pomona City, Water Dept.
Pomona		 151,713 0 7.4 mi
The River Community
 35 2 7.4 mi
Camp Williams-Resort Water
 80 0 7.5 mi
Gswc Claremont
 39,776 0 7.7 mi
Suburban Water Systems-San Jose
 170,523 0 7.8 mi
Valley View Mutual Water Co.
 4,613 0 8.0 mi
Monrovia-City, Water Dept.
Monrovia		 37,931 0 8.4 mi
Walnut Valley Water District
 100,941 0 8.8 mi
Hemlock Mutual Water Co.
 686 2 9.3 mi
LA Puente Valley Cwd
 8,276 0 9.7 mi
City of Industry Waterworks Systems
La Puente		 6,151 0 9.8 mi
Gswc-South Arcadia
 27,430 0 10.0 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
Irwindale Brewery Yard (iby)
 300 0 0
Martin Marietta Southern Calif Aggregate
 51 0 0
Coldbrook Campground
 38 0 0
Usfs-Chantry Flats-A16 Water
 113 0 0
Usfs-Crystal Lake B-13 Water
 2,000 0 0
Usfs-Skyline Park / Mount Wilson A-4
 25 0 0
Henninger Flats
 50 0 0
Usfs-Chilao Main A-9
 50 0 0
Angeles Crest Christian Camp
 112 1 0
Usfs-Red Box Station A-3
 25 0 0
Millard Canyon Improvement Association
 42 1 0
Huttopia Paradise Springs
 302 1 0
Colby Ranch-United Methodist Camp
 180 0 0
Mount Kare Camp/kare Youth League
 59 0 0
Usfs-Big Pines V-2
 54 0 0
Usfs-Jackson Lake V-4
 805 0 0
Mountain High East Ski Area
 150 0 0
Usfs-Appletree Flats V-3
 25 0 0
Camp Elk
 121 0 0
Clear Creek Outdoor Education Center
 105 0 0
Usfs-Monte Cristo Camp T-4
 116 0 0
Usfs-Valyermo Ranger Station
 25 1 1
Young-Nak Presbyterian Church
 25 0 0
Plant Water Well Rockview Dairy
South Gate 		45 0 0
Saint Andrews Abbey
 210 1 1
Rancho los Amigos Hospital
 3,200 0 0
Rancho Ybarra Christian Camp
 73 0 0
1000 Trails / Soledad Canyon Preserve
 812 1 0
Acton Four Square Church
 50 0 0
Acton-Agua Dulce Lds Church
 150 0 0
General Atomics Aeronautical Gray Butt
 405 0 0
Angeles Shooting Ranges
 490 0 0
Acton la North KOA
 400 0 0
Acton Conservation Camp #11
 90 4 0
Desert Aire Golf Course
 80 0 0
Los Angeles World Airports
 180 0 0
Antelope Valley Indian Museum State Park
 506 0 0
Vasquez Rocks County Park
 30 0 0
Lockheed Martin Skunk Works
 135 0 0
Agua Dulce Women's Club
 50 0 0
Ilead Agua Dulce Charter School
 450 1 1
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
Northrop Grumman Corp.
 5,764 1 0
Living Springs Church
 50 0 0
Shepherd of the Hills
 80 0 0
Lancaster National Soccer Center
Lancaster 		500 0 0
LE Chene Restaurant Water System
 100 0 0
All non-community systems
About this data

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