Serving roughly 40,357 people in Imperial County, California.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
📅Updated Quarterly
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Results for CALEXICO, CITY OF
1 water provider directly on file, serving roughly 40,357 people in Imperial County, California.
Quick answer: CALEXICO, CITY OF currently has an open health-based violation on file: Lead And Copper Rule Revisions, a compliance issue since 10/17/2024. This is active, not historical — see the violation detail below for what EPA's enforcement record shows.
Lead Summary
Lithium
Totalhaloaceticacids (HAA5)
TTHM
Chloroform
Bromoform
Bromodichloromethane
Dibromochloromethane
Dichloroaceticacid
Trichloroaceticacid
Dibromoaceticacid
Monobromoaceticacid
Monochloroaceticacid
Fluoride
Vanadium, Total
Cadmium
Barium
Di(2-Ethylhexyl)Phthalate
Aluminum
Utility CALEXICO, CITY OFPopulation served 40,357Owner Local government
Naturally occurring or corrosion-related elements, e.g. lead, arsenic, copper
Lead Summary
Detected: 0 mg/L (ppm)
12/31/2023
Vanadium, Total
Detected: 3.2 UG/L (ppb)
2/26/2025
Cadmium
Detected: 3.7 UG/L (ppb)
2/26/2025
Barium
Detected: 120 UG/L (ppb)
2/26/2025
Aluminum
Detected: 290 UG/L (ppb)
2/26/2025
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
Totalhaloaceticacids (HAA5)
Detected: 46 UG/L (ppb)
9/11/2025
TTHM
Detected: 86 UG/L (ppb)
9/11/2025
A group of disinfection byproducts formed when chlorine reacts with organic matter. Long-term exposure above the legal limit has been linked to increased cancer risk in some studies.
Chloroform
Detected: 36 UG/L (ppb)
9/11/2025
One of the individual trihalomethane disinfection byproducts, formed when chlorine reacts with organic matter.
Bromoform
Detected: 2.3 UG/L (ppb)
9/11/2025
Bromodichloromethane
Detected: 30 UG/L (ppb)
9/11/2025
Dibromochloromethane
Detected: 17 UG/L (ppb)
9/11/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Fluoride
Detected: 0.35 MG/L (ppm)
2/26/2025
Often added deliberately for dental health; can also occur naturally.
Properties
General water characteristics like pH, hardness, and cloudiness (turbidity)
Di(2-Ethylhexyl)Phthalate
Detected: 3.1 UG/L (ppb)
4/24/2025
PFAS & Emerging Contaminants
Human-made "forever chemicals" and other substances not yet fully regulated
Lithium
Detected: 59 µg/L (ppb)
10/9/2024
Occurs naturally in some groundwater. Not currently federally regulated in drinking water.
Other
Additional substances tested that don't fit neatly into the categories above
Dichloroaceticacid
Detected: 22 UG/L (ppb)
9/11/2025
Trichloroaceticacid
Detected: 14 UG/L (ppb)
9/11/2025
Dibromoaceticacid
Detected: 5.2 UG/L (ppb)
9/11/2025
Monobromoaceticacid
Detected: 1.1 UG/L (ppb)
9/11/2025
Monochloroaceticacid
Detected: 2.9 UG/L (ppb)
9/11/2025
Filtration considerations: See the table below for how whole-house carbon, under-sink reverse osmosis, and under-sink carbon systems compare against what's actually on file here. These are general system types, not a specific product recommendation.