LA PUENTE is served by 1 water provider on file with the EPA.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
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Results for LA PUENTE, CA
1 water provider on file serving this city.
Quick answer: LA PUENTE'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 6,158 people, and the full breakdown below reflects everything EPA and California have on record for it.
Lead Summary
TTHM
Chloroform
Bromoform
Bromodichloromethane
Dibromochloromethane
Dichloroaceticacid
Dibromoaceticacid
Magnesium
Calcium
Hardness, Total (ASCACO3)
Alkalinity, Total
Alkalinity, Bicarbonate
TDS
Chloride
Sulfate
Nitrate
Perfluoroctanesulfonicacid (PFOS)
Perfluoroctanoicacid (PFOA)
1, 4-Dioxane
Trichloroethylene
Tetrachloroethylene
1, 1-Dichloroethylene
Perchlorate
Contaminants found
Metals
Naturally occurring or corrosion-related elements, e.g. lead, arsenic, copper
Lead Summary
Detected: 0 mg/L (ppm)
12/31/2025
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
TTHM
Detected: 23 UG/L (ppb)
7/28/2025
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: 1.7 UG/L (ppb)
7/28/2025
One of the individual trihalomethane disinfection byproducts, formed when chlorine reacts with organic matter.
Bromoform
Detected: 7.3 UG/L (ppb)
7/28/2025
Bromodichloromethane
Detected: 4.5 UG/L (ppb)
7/28/2025
Dibromochloromethane
Detected: 9.1 UG/L (ppb)
7/28/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Chloride
Detected: 63 MG/L (ppm)
7/7/2025
Sulfate
Detected: 97 MG/L (ppm)
7/7/2025
Nitrate
Detected: 6.2 MG/L (ppm)
9/26/2025
Commonly from agricultural fertilizer runoff or septic systems. Above the legal limit, it's an immediate concern especially for infants.
Minerals
Everyday minerals that mainly affect taste and water hardness
Magnesium
Detected: 26.1 MG/L (ppm)
7/7/2025
Calcium
Detected: 105 MG/L (ppm)
7/7/2025
Properties
General water characteristics like pH, hardness, and cloudiness (turbidity)
Hardness, Total (ASCACO3)
Detected: 369 MG/L (ppm)
7/7/2025
VOCs (Volatile Organic Compounds)
Industrial solvents and fuel-related chemicals that evaporate easily
Trichloroethylene
Detected: 3.7 UG/L (ppb)
9/26/2025
Tetrachloroethylene
Detected: 8 UG/L (ppb)
9/26/2025
1, 1-Dichloroethylene
Detected: 2.9 UG/L (ppb)
9/26/2025
Calculated Parameters
Values worked out mathematically from other test results, not measured directly
Alkalinity, Bicarbonate
Detected: 370 MG/L (ppm)
7/7/2025
Other
Additional substances tested that don't fit neatly into the categories above
Dichloroaceticacid
Detected: 1.1 UG/L (ppb)
7/28/2025
Dibromoaceticacid
Detected: 1.9 UG/L (ppb)
7/28/2025
Alkalinity, Total
Detected: 310 MG/L (ppm)
7/7/2025
TDS
Detected: 620 MG/L (ppm)
7/7/2025
Perfluoroctanesulfonicacid (PFOS)
Detected: 2 NG/L (ppt)
8/25/2025
One of two PFAS with an enforceable federal limit (4 ppt) since 2024.
Perfluoroctanoicacid (PFOA)
Detected: 2.1 NG/L (ppt)
5/21/2025
One of two PFAS with an enforceable federal limit (4 ppt) since 2024.
1, 4-Dioxane
Detected: 0.47 UG/L (ppb)
9/2/2025
Perchlorate
Detected: 2.1 UG/L (ppb)
9/2/2025
Can occur naturally or from industrial/military sources; may interfere with thyroid function at elevated levels.
Filtration considerations: General system types, not a specific product recommendation.