Tapcensus

Water quality for ZIP code 91759

ZIP 91759 covers Claremont 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

Camp Williams-Resort Water CA1900529 · Community water system · Ground water
Serves 80 people Rules violated, past 3 years 0 Last sanitary survey May 9, 2024 Distance 5.7 mi
View system details EPA facility report

Other community water systems in Los Angeles County

198 systems, nearest first
SystemServesStatusRules violated, 3 yrDistance
The River Community
 35 2 6.0 mi
Fenner Canyon Youth Conservation Camp
 95 1 9.6 mi
LA Verne, City WD
La Verne		 31,334 0 10.0 mi
Gswc Claremont
 39,776 0 10.4 mi
Metropolitan Water Dist. of So. Cal.
 0 0 11.1 mi
Glendora-City, Water Dept.
Glendora		 44,411 0 12.4 mi
Gswc-San Dimas
 56,564 0 13.5 mi
Suburban Water Systems-Glendora
 5,301 0 14.2 mi
Pomona City, Water Dept.
Pomona		 151,713 0 14.6 mi
Covina Valley Water Company Wholesale
 0 0 14.9 mi
Little Baldy Water
 55 2 14.9 mi
Suburban Water Systems-Covina Knolls
 1,451 0 15.4 mi
Three Valleys Mwd
 0 0 15.7 mi
Azusa Light and Water
 110,044 0 15.9 mi
Calif State Polytechnical Univ Pomona
 2,668 2 15.9 mi
Covina-City, Water Dept.
Covina		 33,300 0 16.1 mi
Llano del Rio Water Company
 545 1 16.4 mi
Valencia Heights Water Co.
 7,775 0 17.1 mi
Cal-Am Water Company Duarte
 24,767 0 17.5 mi
Llano Mutual Water Company
 245 1 17.6 mi
Monrovia-City, Water Dept.
Monrovia		 37,931 0 18.0 mi
Los Angeles Cwwd 40, Reg. 39-Rock Creek
 1,030 0 18.5 mi
Valley County Water Dist.
 68,871 0 18.7 mi
Walnut Valley Water District
 100,941 0 19.3 mi
Valley View Mutual Water Co.
 4,613 0 20.0 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
Mount Kare Camp/kare Youth League
 59 0 0
Usfs-Big Pines V-2
 54 0 0
Mountain High East Ski Area
 150 0 0
Usfs-Crystal Lake B-13 Water
 2,000 0 0
Coldbrook Campground
 38 0 0
Usfs-Appletree Flats V-3
 25 0 0
Usfs-Jackson Lake V-4
 805 0 0
Camp Elk
 121 0 0
Huttopia Paradise Springs
 302 1 0
Usfs-Valyermo Ranger Station
 25 1 1
Usfs-Chilao Main A-9
 50 0 0
Irwindale Brewery Yard (iby)
 300 0 0
Saint Andrews Abbey
 210 1 1
Angeles Crest Christian Camp
 112 1 0
Martin Marietta Southern Calif Aggregate
 51 0 0
Usfs-Chantry Flats-A16 Water
 113 0 0
Usfs-Skyline Park / Mount Wilson A-4
 25 0 0
General Atomics Aeronautical Gray Butt
 405 0 0
Henninger Flats
 50 0 0
Usfs-Red Box Station A-3
 25 0 0
Colby Ranch-United Methodist Camp
 180 0 0
Usfs-Monte Cristo Camp T-4
 116 0 0
Millard Canyon Improvement Association
 42 1 0
Clear Creek Outdoor Education Center
 105 0 0
Antelope Valley Indian Museum State Park
 506 0 0
Desert Aire Golf Course
 80 0 0
1000 Trails / Soledad Canyon Preserve
 812 1 0
Rancho Ybarra Christian Camp
 73 0 0
Acton-Agua Dulce Lds Church
 150 0 0
Acton Four Square Church
 50 0 0
Los Angeles World Airports
 180 0 0
Young-Nak Presbyterian Church
 25 0 0
Northrop Grumman Corp.
 5,764 1 0
Lockheed Martin Skunk Works
 135 0 0
Plant Water Well Rockview Dairy
South Gate 		45 0 0
Acton la North KOA
 400 0 0
Lancaster National Soccer Center
Lancaster 		500 0 0
Rancho los Amigos Hospital
 3,200 0 0
Acton Conservation Camp #11
 90 4 0
Eastside Union School District
 650 1 1
Angeles Shooting Ranges
 490 0 0
Vasquez Rocks County Park
 30 0 0
Agua Dulce Winery
 113 0 0
Lang Ranch Shopping Center
 28 0 0
Agua Dulce Women's Club
 50 0 0
Wagon Wheel Plaza
 55 1 0
Agua Dulce Water System
 493 0 0
Ilead Agua Dulce Charter School
 450 1 1
Living Springs Church
 50 0 0
Shepherd of the Hills
 80 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.