DELANO is served by 6 water providers on file with the EPA.
Data current as of July 2026
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Results for DELANO, CA
6 water providers on file serving this city.
Quick answer: DELANO's water has no violation currently counted toward its compliance status. EPA's record shows a Nitrate violation dating to 10/01/1982 (44 years ago) — because it's more than five years past its deadline, EPA's policy no longer treats it as part of this system's current standing, though it remains on the public record.
Lead Summary
Lead
Copper, Free
Nitrate
Nitrate-Nitrite
Combined Uranium
1, 2, 3-Trichloropropane
Chromium, Hex
1, 2-Dibromo-3-Chloropropane
Arsenic
Fluoride
Barium
TTHM
Chloroform
Bromodichloromethane
Dibromochloromethane
Lithium
Totalhaloaceticacids (HAA5)
Bromoform
Dichloroaceticacid
Trichloroaceticacid
Dibromoaceticacid
Nitrite
Violations on file
Nitrate
Older/archived health-based violation
Found at 1 of 6 providers
Commonly from agricultural fertilizer runoff or septic systems. Above the legal limit, it's an immediate concern especially for infants.
Contaminants found
Metals
Naturally occurring or corrosion-related elements, e.g. lead, arsenic, copper
Lead Summary
Detected: 0.014 mg/L (ppm)
Found at 5 providers
Lead
Detected: 26 UG/L (ppb)
8/13/2025
A metal that can leach from old pipes, solder, and fixtures. Current medical guidance holds there is no truly safe level of lead exposure, especially for children and pregnant women.
Copper, Free
Detected: 130 UG/L (ppb)
Found at 2 providers
Combined Uranium
Detected: 3.2 PCI/L
7/2/2025
A naturally occurring radioactive metal. Long-term exposure above the legal limit is associated with kidney effects and increased cancer risk.
Chromium, Hex
Detected: 8.8 UG/L (ppb)
Found at 3 providers
Arsenic
Detected: 13 UG/L (ppb)
Found at 2 providers
Occurs naturally in some groundwater. Long-term exposure above the legal limit (10 ppb) has been linked to increased cancer risk and cardiovascular disease.
Barium
Detected: 46 UG/L (ppb)
7/2/2025
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
TTHM
Detected: 21 UG/L (ppb)
Found at 3 providers
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: 8.7 UG/L (ppb)
Found at 2 providers
One of the individual trihalomethane disinfection byproducts, formed when chlorine reacts with organic matter.
Bromodichloromethane
Detected: 4.3 UG/L (ppb)
Found at 2 providers
Dibromochloromethane
Detected: 7 UG/L (ppb)
Found at 2 providers
Totalhaloaceticacids (HAA5)
Detected: 11 UG/L (ppb)
10/13/2025
Bromoform
Detected: 9 UG/L (ppb)
Found at 2 providers
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Nitrate
Detected: 14 MG/L (ppm)
Found at 5 providers
Commonly from agricultural fertilizer runoff or septic systems. Above the legal limit, it's an immediate concern especially for infants.
Nitrate-Nitrite
Detected: 16 MG/L (ppm)
Found at 4 providers
Fluoride
Detected: 0.24 MG/L (ppm)
Found at 2 providers
Often added deliberately for dental health; can also occur naturally.
Nitrite
Detected: 0.093 MG/L (ppm)
7/2/2025
PFAS & Emerging Contaminants
Human-made "forever chemicals" and other substances not yet fully regulated
Lithium
Detected: 9.14 µg/L (ppb)
9/10/2024
Occurs naturally in some groundwater. Not currently federally regulated in drinking water.
VOCs (Volatile Organic Compounds)
Industrial solvents and fuel-related chemicals that evaporate easily
1, 2, 3-Trichloropropane
Detected: 0.032 UG/L (ppb)
Found at 2 providers
Other
Additional substances tested that don't fit neatly into the categories above
1, 2-Dibromo-3-Chloropropane
Detected: 0.11 UG/L (ppb)
Found at 2 providers
Dichloroaceticacid
Detected: 2 UG/L (ppb)
10/13/2025
Trichloroaceticacid
Detected: 2 UG/L (ppb)
10/13/2025
Dibromoaceticacid
Detected: 5 UG/L (ppb)
10/13/2025
Filtration considerations: General system types, not a specific product recommendation.