Tapcensus

Water quality for ZIP code 91011

ZIP 91011 covers La Cañada Flintridge, Pasadena, and 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

LA Canada Irrigation Dist. CA1910054 · Community water system · Surface water purchased
Serves 9,258 people Rules violated, past 3 years 0 Last sanitary survey Nov 12, 2024 Distance 0.5 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
Liberty Utilities Mesa Crest
 1,616 0 1.3 mi
Valley Water Co.
 10,113 0 1.9 mi
Crescenta Valley Cwd
 28,162 0 1.9 mi
Foothill Municipal Water Dist.
 0 2 2.4 mi
Lincoln Avenue Water Co.
 8,721 0 3.4 mi
Glendale-City, Water Dept.
Glendale		 192,212 0 3.7 mi
Las Flores Water Co.
 2,211 0 4.4 mi
Valhalla Water Association
 25 1 4.8 mi
Rubio Canon Land & Water Association
 6,646 0 5.0 mi
Pasadena Water and Power
Pasadena		 165,448 0 6.0 mi
Burbank-City, Water Dept.
Burbank		 106,146 0 7.1 mi
Kinneloa Irrigation Dist.
 1,808 1 7.6 mi
City of South Pasadena
South Pasadena		 25,329 0 8.2 mi
Sierra Madre-City, Water Dept.
Sierra Madre		 11,000 0 9.6 mi
City of Alhambra
Alhambra		 80,279 0 10.3 mi
Cal-Am Water Company East Pasadena
 9,963 0 10.5 mi
Sunny Slope Water Co.
 25,252 1 10.6 mi
Cal/am Water Company San Marino
 48,065 0 10.6 mi
Los Angeles Cwwd 21-Kagel Canyon
 736 0 10.8 mi
San Gabriel County WD
 40,154 0 11.0 mi
City of Arcadia
Arcadia		 54,236 0 11.3 mi
Monterey Park-City, Water Dept.
Monterey Park		 61,096 1 12.6 mi
Gswc-South San Gabriel
 26,451 0 12.6 mi
Monrovia-City, Water Dept.
Monrovia		 37,931 0 12.8 mi
Amarillo Mutual Water Company
 3,134 0 12.9 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
Millard Canyon Improvement Association
 42 1 0
Clear Creek Outdoor Education Center
 105 0 0
Usfs-Red Box Station A-3
 25 0 0
Rancho Ybarra Christian Camp
 73 0 0
Henninger Flats
 50 0 0
Colby Ranch-United Methodist Camp
 180 0 0
Usfs-Skyline Park / Mount Wilson A-4
 25 0 0
Usfs-Chantry Flats-A16 Water
 113 0 0
Usfs-Monte Cristo Camp T-4
 116 0 0
Young-Nak Presbyterian Church
 25 0 0
Angeles Shooting Ranges
 490 0 0
Martin Marietta Southern Calif Aggregate
 51 0 0
Angeles Crest Christian Camp
 112 1 0
Acton la North KOA
 400 0 0
1000 Trails / Soledad Canyon Preserve
 812 1 0
Acton Conservation Camp #11
 90 4 0
Usfs-Chilao Main A-9
 50 0 0
Irwindale Brewery Yard (iby)
 300 0 0
Acton Four Square Church
 50 0 0
Acton-Agua Dulce Lds Church
 150 0 0
Plant Water Well Rockview Dairy
South Gate 		45 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
Rancho los Amigos Hospital
 3,200 0 0
Wagon Wheel Plaza
 55 1 0
Agua Dulce Water System
 493 0 0
Coldbrook Campground
 38 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
Usfs-Crystal Lake B-13 Water
 2,000 0 0
Saint Andrews Abbey
 210 1 1
Texas Canyon Ranger Station
 30 0 0
Usfs-Valyermo Ranger Station
 25 1 1
Huttopia Paradise Springs
 302 1 0
Anchor Retreat Center
 202 0 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
Northrop Grumman Corp.
 5,764 1 0
Usfs-Appletree Flats V-3
 25 0 0
Mountain High East Ski Area
 150 0 0
Lancaster National Soccer Center
Lancaster 		500 0 0
Mount Kare Camp/kare Youth League
 59 0 0
Usfs-Big Pines V-2
 54 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.