HANFORD is served by 1 water provider on file with the EPA.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
📅Updated Quarterly
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Results for HANFORD, CA
1 water provider on file serving this city.
Quick answer: HANFORD's water has no violations on file and no single reading stands out against its peers (1 other providers in this area). It serves roughly 62,127 people, and the full breakdown below reflects everything EPA and California have on record for it.
Lead Summary
Totalhaloaceticacids (HAA5)
TTHM
Chloroform
Bromoform
Bromodichloromethane
Dibromochloromethane
Dibromoaceticacid
Dichloroaceticacid
Arsenic
Aggressive Index
Langelier Index (pH(s))
Magnesium
Calcium
Sodium
Alkalinity, Total
Alkalinity, Bicarbonate
Alkalinity, Carbonate
Hardness, Total (ASCACO3)
TDS
Chloride
Fluoride
Turbidity
Gross Alpha Particle Activity
pH
Iron
Manganese
Selenium
Aluminum
Conductivity (at 25°C)
Color
Trichloroaceticacid
Contaminants found
Metals
Naturally occurring or corrosion-related elements, e.g. lead, arsenic, copper
Lead Summary
Detected: 0 mg/L (ppm)
12/31/2024
Arsenic
Detected: 2.6 UG/L (ppb)
10/21/2025
Occurs naturally in some groundwater. Long-term exposure above the legal limit (10 ppb) has been linked to increased cancer risk and cardiovascular disease.
Iron
Detected: 36 UG/L (ppb)
2/14/2025
Mostly an aesthetic issue (metallic taste, staining) rather than a health concern at typical levels.
Manganese
Detected: 25 UG/L (ppb)
5/8/2025
Mainly a taste/staining concern at typical levels; long-term neurological research at high chronic exposure is ongoing.
Selenium
Detected: 2.9 UG/L (ppb)
5/8/2025
Aluminum
Detected: 310 UG/L (ppb)
2/14/2025
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
Totalhaloaceticacids (HAA5)
Detected: 8.3 UG/L (ppb)
10/16/2025
TTHM
Detected: 48 UG/L (ppb)
10/16/2025
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: 0.95 UG/L (ppb)
10/16/2025
One of the individual trihalomethane disinfection byproducts, formed when chlorine reacts with organic matter.
Bromoform
Detected: 34 UG/L (ppb)
10/16/2025
Bromodichloromethane
Detected: 2.8 UG/L (ppb)
10/16/2025
Dibromochloromethane
Detected: 10 UG/L (ppb)
10/16/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Chloride
Detected: 210 MG/L (ppm)
5/8/2025
Fluoride
Detected: 1.2 MG/L (ppm)
5/8/2025
Often added deliberately for dental health; can also occur naturally.
Minerals
Everyday minerals that mainly affect taste and water hardness
Magnesium
Detected: 0.44 MG/L (ppm)
5/8/2025
Calcium
Detected: 5.1 MG/L (ppm)
5/8/2025
Sodium
Detected: 160 MG/L (ppm)
5/8/2025
Properties
General water characteristics like pH, hardness, and cloudiness (turbidity)
Langelier Index (pH(s))
Detected: -0.33 LANG
5/8/2025
Hardness, Total (ASCACO3)
Detected: 15 MG/L (ppm)
5/8/2025
Gross Alpha Particle Activity
Detected: 3.76 PCI/L
9/24/2025
pH
Detected: 8.6 PH
5/8/2025
A measure of how acidic or basic the water is (7 is neutral). Affects taste and plumbing, not a direct health measure.
Calculated Parameters
Values worked out mathematically from other test results, not measured directly
Alkalinity, Bicarbonate
Detected: 98 MG/L (ppm)
5/8/2025
Alkalinity, Carbonate
Detected: 14 MG/L (ppm)
5/8/2025
Other
Additional substances tested that don't fit neatly into the categories above
Dibromoaceticacid
Detected: 7.2 UG/L (ppb)
10/16/2025
Dichloroaceticacid
Detected: 1.1 UG/L (ppb)
10/16/2025
Aggressive Index
Detected: 11.7 AGGR
5/8/2025
Alkalinity, Total
Detected: 110 MG/L (ppm)
5/8/2025
TDS
Detected: 450 MG/L (ppm)
5/8/2025
Turbidity
Detected: 2 NTU
2/14/2025
A measure of water cloudiness from suspended particles.
Conductivity (at 25°C)
Detected: 850 UMHO/CM
5/8/2025
Color
Detected: 5 UNITS
5/8/2025
Trichloroaceticacid
Detected: 1 UG/L (ppb)
1/16/2025
Filtration considerations: General system types, not a specific product recommendation.