MCFARLAND is served by 1 water provider on file with the EPA.
Data current as of July 2026
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Results for MCFARLAND, CA
1 water provider on file serving this city.
Quick answer: MCFARLAND'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
Totalhaloaceticacids (HAA5)
TTHM
Bromoform
Dibromochloromethane
Chloroform
Bromodichloromethane
Dibromoaceticacid
Dichloroaceticacid
Nitrate
Arsenic
1, 2, 3-Trichloropropane
Violations on file
Nitrate
Older/archived health-based violation
Found at 1 of 1 provider
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 mg/L (ppm)
12/31/2025
Arsenic
Detected: 7.8 UG/L (ppb)
10/2/2025
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: 7.8 UG/L (ppb)
8/14/2025
TTHM
Detected: 35 UG/L (ppb)
8/14/2025
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.
Bromoform
Detected: 22 UG/L (ppb)
8/14/2025
Dibromochloromethane
Detected: 8.4 UG/L (ppb)
8/14/2025
Chloroform
Detected: 1.8 UG/L (ppb)
8/14/2025
One of the individual trihalomethane disinfection byproducts, formed when chlorine reacts with organic matter.
Bromodichloromethane
Detected: 2.9 UG/L (ppb)
8/14/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Nitrate
Detected: 0.32 MG/L (ppm)
10/9/2025
Commonly from agricultural fertilizer runoff or septic systems. Above the legal limit, it's an immediate concern especially for infants.
VOCs (Volatile Organic Compounds)
Industrial solvents and fuel-related chemicals that evaporate easily
1, 2, 3-Trichloropropane
Detected: 0.014 UG/L (ppb)
3/6/2025
Other
Additional substances tested that don't fit neatly into the categories above
Dibromoaceticacid
Detected: 6.6 UG/L (ppb)
8/14/2025
Dichloroaceticacid
Detected: 1.2 UG/L (ppb)
8/14/2025
Filtration considerations: General system types, not a specific product recommendation.