IMPERIAL is served by 2 water providers on file with the EPA.
Data current as of July 2026
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Results for IMPERIAL, CA
2 water providers on file serving this city.
Quick answer: IMPERIAL's water 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
Trichloroaceticacid
Dichloroaceticacid
Dibromoaceticacid
Alkalinity, Total
Alkalinity, Bicarbonate
Carbon, Total
Aluminum
Fluoride
Barium
Arsenic
Monochloroaceticacid
Violations on file
Lead And Copper Rule Revisions
Currently open health violation
Found at 2 of 2 providers
Total Haloacetic Acids (HAA5)
Older/archived health-based violation
Found at 1 of 2 providers
Contaminants found
Metals
Naturally occurring or corrosion-related elements, e.g. lead, arsenic, copper
Lead Summary
Detected: 0 mg/L (ppm)
Found at 2 providers
Aluminum
Detected: 300 UG/L (ppb)
7/9/2025
Barium
Detected: 120 UG/L (ppb)
2/26/2025
Arsenic
Detected: 2.6 UG/L (ppb)
2/26/2025
Occurs naturally in some groundwater. Long-term exposure above the legal limit (10 ppb) has been linked to increased cancer risk and cardiovascular disease.
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
Totalhaloaceticacids (HAA5)
Detected: 74 UG/L (ppb)
Found at 2 providers
TTHM
Detected: 65 UG/L (ppb)
6/18/2025
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: 19 UG/L (ppb)
6/18/2025
One of the individual trihalomethane disinfection byproducts, formed when chlorine reacts with organic matter.
Bromoform
Detected: 5.4 UG/L (ppb)
6/18/2025
Bromodichloromethane
Detected: 21 UG/L (ppb)
6/18/2025
Dibromochloromethane
Detected: 19 UG/L (ppb)
6/18/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Fluoride
Detected: 0.36 MG/L (ppm)
2/26/2025
Often added deliberately for dental health; can also occur naturally.
PFAS & Emerging Contaminants
Human-made "forever chemicals" and other substances not yet fully regulated
Lithium
Detected: 50 µg/L (ppb)
7/9/2025
Occurs naturally in some groundwater. Not currently federally regulated in drinking water.
Calculated Parameters
Values worked out mathematically from other test results, not measured directly
Alkalinity, Bicarbonate
Detected: 120 MG/L (ppm)
7/9/2025
Other
Additional substances tested that don't fit neatly into the categories above
Trichloroaceticacid
Detected: 27 UG/L (ppb)
Found at 2 providers
Dichloroaceticacid
Detected: 39 UG/L (ppb)
Found at 2 providers
Dibromoaceticacid
Detected: 3.9 UG/L (ppb)
Found at 2 providers
Alkalinity, Total
Detected: 120 MG/L (ppm)
7/9/2025
Carbon, Total
Detected: 2.3 MG/L (ppm)
7/9/2025
Monochloroaceticacid
Detected: 4.8 UG/L (ppb)
5/27/2025
Filtration considerations: General system types, not a specific product recommendation.