Tapcensus

Water quality in San Pasqual, California

San Pasqual 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

Cal/am Water Company San Marino CA1910139 · Community water system · Surface water purchased
Serves 48,065 people Rules violated, past 3 years 0 Last sanitary survey Nov 13, 2025 Distance 2.6 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
Pasadena Water and Power
Pasadena		 165,448 0 2.2 mi
Sunny Slope Water Co.
 25,252 1 2.4 mi
Cal-Am Water Company East Pasadena
 9,963 0 2.4 mi
Kinneloa Irrigation Dist.
 1,808 1 2.9 mi
San Gabriel County WD
 40,154 0 3.3 mi
Sierra Madre-City, Water Dept.
Sierra Madre		 11,000 0 3.6 mi
City of South Pasadena
South Pasadena		 25,329 0 3.7 mi
City of Arcadia
Arcadia		 54,236 0 3.7 mi
Rubio Canon Land & Water Association
 6,646 0 3.7 mi
City of Alhambra
Alhambra		 80,279 0 4.3 mi
Las Flores Water Co.
 2,211 0 4.5 mi
Lincoln Avenue Water Co.
 8,721 0 5.1 mi
Gswc-South Arcadia
 27,430 0 5.2 mi
Amarillo Mutual Water Company
 3,134 0 5.2 mi
Gswc-South San Gabriel
 26,451 0 5.3 mi
Foothill Municipal Water Dist.
 0 2 5.8 mi
EL Monte-City, Water Dept.
El Monte		 23,000 0 5.8 mi
Hemlock Mutual Water Co.
 686 2 6.3 mi
Monterey Park-City, Water Dept.
Monterey Park		 61,096 1 6.4 mi
Valley Water Co.
 10,113 0 6.6 mi
Sterling Mutual Water Company
 198 2 6.6 mi
Monrovia-City, Water Dept.
Monrovia		 37,931 0 6.6 mi
Liberty Utilities Mesa Crest
 1,616 0 7.0 mi
Del Rio Mutual
 700 1 7.8 mi
San Gabriel Valley Water Co-Montebello 1
 5,205 0 7.8 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
Henninger Flats
 50 0 0
Usfs-Chantry Flats-A16 Water
 113 0 0
Millard Canyon Improvement Association
 42 1 0
Usfs-Skyline Park / Mount Wilson A-4
 25 0 0
Martin Marietta Southern Calif Aggregate
 51 0 0
Usfs-Red Box Station A-3
 25 0 0
Young-Nak Presbyterian Church
 25 0 0
Irwindale Brewery Yard (iby)
 300 0 0
Clear Creek Outdoor Education Center
 105 0 0
Colby Ranch-United Methodist Camp
 180 0 0
Plant Water Well Rockview Dairy
South Gate 		45 0 0
Rancho Ybarra Christian Camp
 73 0 0
Usfs-Monte Cristo Camp T-4
 116 0 0
Rancho los Amigos Hospital
 3,200 0 0
Angeles Crest Christian Camp
 112 1 0
Usfs-Chilao Main A-9
 50 0 0
Coldbrook Campground
 38 0 0
Angeles Shooting Ranges
 490 0 0
Usfs-Crystal Lake B-13 Water
 2,000 0 0
1000 Trails / Soledad Canyon Preserve
 812 1 0
Acton la North KOA
 400 0 0
Acton Conservation Camp #11
 90 4 0
Acton Four Square Church
 50 0 0
Acton-Agua Dulce Lds Church
 150 0 0
Huttopia Paradise Springs
 302 1 0
Saint Andrews Abbey
 210 1 1
Usfs-Valyermo Ranger Station
 25 1 1
Camp Elk
 121 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
Usfs-Jackson Lake V-4
 805 0 0
Lang Ranch Shopping Center
 28 0 0
Wagon Wheel Plaza
 55 1 0
Agua Dulce Water System
 493 0 0
Usfs-Appletree Flats V-3
 25 0 0
Agua Dulce Winery
 113 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
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
Texas Canyon Ranger Station
 30 0 0
Los Angeles World Airports
 180 0 0
Lockheed Martin Skunk Works
 135 0 0
Anchor Retreat Center
 202 0 0
Northrop Grumman Corp.
 5,764 1 0
Lancaster National Soccer Center
Lancaster 		500 0 0
All non-community systems
About this data

Water systems are matched to Los Angeles County, nearest to San Pasqual 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.