Tapcensus

Water quality for ZIP code 91746

ZIP 91746 covers Industry, Avocado Heights, West Puente Valley, La Puente, Baldwin Park, and Hacienda Heights 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

City of Industry Waterworks Systems CA1910029 · Community water system · Ground water · La Puente
Serves 6,151 people Rules violated, past 3 years 0 Last sanitary survey Dec 6, 2023 Distance 1.4 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
Del Rio Mutual
 700 1 2.2 mi
San Gabriel Valley Water Co.-El Monte
 240,000 0 2.5 mi
LA Puente Valley Cwd
 8,276 0 2.6 mi
Sterling Mutual Water Company
 198 2 2.9 mi
Valley View Mutual Water Co.
 4,613 0 3.1 mi
Suburban Water Systems-San Jose
 170,523 0 3.5 mi
EL Monte-City, Water Dept.
El Monte		 23,000 0 3.7 mi
Hemlock Mutual Water Co.
 686 2 3.7 mi
Valley County Water Dist.
 68,871 0 4.1 mi
Gswc-South Arcadia
 27,430 0 4.7 mi
Whittier-City, Water Dept.
Whittier		 49,954 0 5.2 mi
Amarillo Mutual Water Company
 3,134 0 5.6 mi
San Gabriel Valley Water Co-Montebello 1
 5,205 0 6.0 mi
LA Habra Heights Cwd
 5,682 0 6.2 mi
Rowland Water District
 56,100 0 6.3 mi
Cal-Am Water Company Duarte
 24,767 0 6.4 mi
Azusa Light and Water
 110,044 0 6.5 mi
Gswc-South San Gabriel
 26,451 0 6.6 mi
Covina-City, Water Dept.
Covina		 33,300 0 6.7 mi
Pico WD
 22,051 0 6.7 mi
Pico Rivera City, Water Dept.
Pico Rivera		 39,451 0 6.8 mi
Valencia Heights Water Co.
 7,775 0 6.8 mi
California Domestic Water Company
 0 0 6.9 mi
Suburban Water Systems-Whittier
 66,565 0 6.9 mi
City of Arcadia
Arcadia		 54,236 0 7.0 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
Martin Marietta Southern Calif Aggregate
 51 0 0
Irwindale Brewery Yard (iby)
 300 0 0
Usfs-Chantry Flats-A16 Water
 113 0 0
Henninger Flats
 50 0 0
Plant Water Well Rockview Dairy
South Gate 		45 0 0
Rancho los Amigos Hospital
 3,200 0 0
Usfs-Skyline Park / Mount Wilson A-4
 25 0 0
Young-Nak Presbyterian Church
 25 0 0
Millard Canyon Improvement Association
 42 1 0
Usfs-Red Box Station A-3
 25 0 0
Coldbrook Campground
 38 0 0
Clear Creek Outdoor Education Center
 105 0 0
Colby Ranch-United Methodist Camp
 180 0 0
Usfs-Crystal Lake B-13 Water
 2,000 0 0
Angeles Crest Christian Camp
 112 1 0
Usfs-Chilao Main A-9
 50 0 0
Usfs-Monte Cristo Camp T-4
 116 0 0
Rancho Ybarra Christian Camp
 73 0 0
Huttopia Paradise Springs
 302 1 0
Usfs-Jackson Lake V-4
 805 0 0
Camp Elk
 121 0 0
Angeles Shooting Ranges
 490 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
Usfs-Valyermo Ranger Station
 25 1 1
Saint Andrews Abbey
 210 1 1
1000 Trails / Soledad Canyon Preserve
 812 1 0
Acton la North KOA
 400 0 0
Acton Four Square Church
 50 0 0
Acton-Agua Dulce Lds Church
 150 0 0
Acton Conservation Camp #11
 90 4 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
Shepherd of the Hills
 80 0 0
Living Springs Church
 50 0 0
LE Chene Restaurant Water System
 100 0 0
Desert Aire Golf Course
 80 0 0
Los Angeles World Airports
 180 0 0
General Atomics Aeronautical Gray Butt
 405 0 0
Lockheed Martin Skunk Works
 135 0 0
Northrop Grumman Corp.
 5,764 1 0
Texas Canyon Ranger Station
 30 0 0
Anchor Retreat Center
 202 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.