Tapcensus

California

Imperial County drinking water quality

79 active public water systems serve 191,946 people in Imperial County. 34 are compliant, 45 had at least one EPA violation in the past three years, 0 are designated serious violators, and 24 carry a health flag.

Active systems 79 29 community systems
People served 192K by public water systems
Systems with violations 45 57% of active systems, past 3 years
Serious violators 0 24 systems carry a health flag

Needs attention

Calexico, City of CA1310002 · Calexico · Community water system · Serves 40,357 1 rule violated in the past three years. Unresolved: Lead and Copper Rule Revisions (LCRR).
Imperial, City of CA1310006 · Imperial · Community water system · Serves 22,102 2 rules violated in the past three years. Unresolved: Lead and Copper Rule Revisions (LCRR).
Westmorland, City of CA1310008 · Westmorland · Community water system · Serves 2,202 3 rules violated in the past three years. Unresolved: Lead and Copper Rule Revisions (LCRR).
Seeley Cwd CA1310013 · Community water system · Serves 1,729 1 rule violated in the past three years. Unresolved: Lead and Copper Rule Revisions (LCRR).
Sunbeam Lake RV Resort CA1300626 · Community water system · Serves 650 2 rules violated in the past three years. Unresolved: Lead and Copper Rule Revisions (LCRR).
Country Life MH & RV Park CA1300550 · Community water system · Serves 600 2 rules violated in the past three years. Unresolved: Lead and Copper Rule Revisions (LCRR).
Meadows Union Elementary School CA1300554 · Non-Transient non-community system · Serves 550 4 rules violated in the past three years. Unresolved: Lead and Copper Rule (LCR) and Lead and Copper Rule Revisions (LCRR).
Palo Verde County Water Dist. CA1300616 · Community water system · Serves 410 4 rules violated in the past three years. Unresolved: Consumer Confidence Rule (CCR) and Lead and Copper Rule Revisions (LCRR).
Winterhaven County Water District CA1300009 · Community water system · Serves 394 2 rules violated in the past three years. Unresolved: Lead and Copper Rule Revisions (LCRR).
Mesquite Mines Inc. CA1300643 · Non-Transient non-community system · Serves 300 1 rule violated in the past three years. Unresolved: Lead and Copper Rule Revisions (LCRR).

14 more systems with a serious violator or health flag designation are in the lists below.

Community water systems

29 systems, largest first
SystemServesStatusRules violated, 3 yrUnresolved
EL Centro, City of
El Centro 		44,124 0 0
Calexico, City of
Calexico 		40,357 1 1
Brawley, City of
Brawley 		26,862 1 0
Imperial, City of
Imperial 		22,102 2 1
Gswc Calipatria
 7,475 0 0
Heber Public Utility District
 7,312 1 0
Holtville, City of
Holtville 		6,355 0 0
Calipatria State Prison
 4,800 0 0
Centinela State Prison
 4,100 0 0
Westmorland, City of
Westmorland 		2,202 3 1
Seeley Cwd
 1,729 1 1
Gateway
 1,215 0 0
Sunbeam Lake RV Resort
 650 2 1
Country Life MH & RV Park
 600 2 1
Palo Verde County Water Dist.
 410 4 2
Winterhaven County Water District
 394 2 1
Naf EL Centro
 360 1 0
Date Gardens Mobile Home Park
 202 2 1
Ocotillo Mutual Water CO
 150 1 1
Sportsmans Paradise
 138 1 0
Rio Bend RV Golf Resort & Storm Crossing
 130 3 2
Coyote Valley Mutual Water CO
 125 1 1
Mitchells Camp Family Assoc.
 125 0 0
Valley Mobile Home Park
 70 3 1
Gold Rock Ranch
 45 5 0
Imperial Lakes Inc.
 40 2 0
Iid Village
 37 0 0
Jackson Hide-A-Way
 25 0 0
Riverfront Mutual Water Company
 25 0 0
Non-community systems (50: schools, campgrounds, workplaces, restaurants)

These systems serve places people visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Imperial Valley College
 7,650 1 0
IV Desert Museum Society Inc.
 6,110 1 0
McCabe Union School
 1,250 0 0
Meadows Union Elementary School
 550 4 2
Pilot Knob RV Resort
 500 0 0
Ocotillo RV Resort
 400 1 0
Mesquite Mines Inc.
 300 1 1
Spreckels Sugar Company
 300 4 2
U.s. Gypsum CO
 280 1 1
Dhs Calexico
 250 1 0
Pine Union School
 217 1 0
Old Eucalyptus Schoolhouse
 200 0 0
Picacho State Reservation Area
 155 0 0
Magnolia Union School
 142 2 0
Calenergy (vulcan Power Plant)
 108 0 0
Walters Camp RV Park
 102 0 0
Mulberry Union School
 85 2 0
Sonny Bono Salton Sea Wildlife Refuge
 78 0 0
LA Valle Sabbia Inc.
 60 1 1
Salamander Trailer Park
 60 0 0
Brandt Cattle
 50 3 1
Gordon's Well #1
 50 0 0
Gordon's Well Park # 2
 50 0 0
Calenergy (administrative)
 48 0 0
Allied Waste of Imperial Valley
 45 2 1
Earthrise Nutritionals, LLC
 45 1 0
Calvary Chapel Church
 40 1 0
Hudson Ranch Power I LLC
 39 1 0
Calenergy (salton Sea Unit NO Iii)
 37 0 0
Ocotillo Chevron Station
 35 0 0
Blu-In Cafe
 33 1 0
UC Desert Research and Extension Center
 33 2 0
Haykingdom, Inc.
Imperial 		32 2 1
Bornt 1992 Irrevocable Trust
 30 2 1
Duner's Diner
 30 0 0
Iid North End Consolidation
 30 2 1
Red Hill Marina
 30 0 0
Sidewinder Chevron
 30 1 0
Wiest Lake
 30 0 0
Center of the World
 28 1 0
Christian Service Center of Senator Wash
 28 0 0
Caltrans, Sand Hill Rest Stop
 26 1 0
Yumi Dates Freezer Facility
 26 0 0
Calenergy (eng. & Tech.)
 25 0 0
Enchanted Palms
 25 0 0
Glamis Beach Store
Brawley 		25 0 0
Gsa Calexico Port of Entry
 25 2 2
Heber Dunes Svra
 25 0 0
South Mesa Campground
 25 0 0
Coco Palms Mobile Home Park
 15 0 0
Inactive systems (66, no longer operating or reporting)

Kept for the record and excluded from the county totals above. Browse inactive systems.

About this data

Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.

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.