CERRITOS 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 CERRITOS, CA
1 water provider on file serving this city.
Quick answer: CERRITOS'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 47,475 people, and the full breakdown below reflects everything EPA and California have on record for it.
Lead Summary
PFOS
Lithium
TTHM
Dibromoaceticacid
Bromoform
Dibromochloromethane
Bromodichloromethane
Perfluorohexanesulfonicacid (PFHxS)
Perfluoroctanesulfonicacid (PFOS)
Manganese
Trichloroethylene
Tetrachloroethylene
1, 1-Dichloroethylene
Arsenic
Contaminants found
Metals
Naturally occurring or corrosion-related elements, e.g. lead, arsenic, copper
Lead Summary
Detected: 0 mg/L (ppm)
12/31/2022
Manganese
Detected: 54 UG/L (ppb)
10/16/2025
Mainly a taste/staining concern at typical levels; long-term neurological research at high chronic exposure is ongoing.
Arsenic
Detected: 7.1 UG/L (ppb)
8/21/2025
Occurs naturally in some groundwater. Long-term exposure above the legal limit (10 ppb) has been linked to increased cancer risk and cardiovascular disease.
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
TTHM
Detected: 16 UG/L (ppb)
7/24/2025
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: 6.5 UG/L (ppb)
7/24/2025
Dibromochloromethane
Detected: 6.7 UG/L (ppb)
7/24/2025
Bromodichloromethane
Detected: 3.1 UG/L (ppb)
7/24/2025
PFAS & Emerging Contaminants
Human-made "forever chemicals" and other substances not yet fully regulated
PFOS
Detected: 0.0048 µg/L (ppb)
5/13/2024
One of two PFAS with an enforceable federal limit (4 ppt) since 2024.
Lithium
Detected: 56 µg/L (ppb)
2/27/2025
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
Trichloroethylene
Detected: 0.55 UG/L (ppb)
8/21/2025
Tetrachloroethylene
Detected: 0.51 UG/L (ppb)
5/15/2025
1, 1-Dichloroethylene
Detected: 1.1 UG/L (ppb)
8/21/2025
Other
Additional substances tested that don't fit neatly into the categories above
Dibromoaceticacid
Detected: 1.4 UG/L (ppb)
10/9/2025
Perfluorohexanesulfonicacid (PFHxS)
Detected: 1.8 NG/L (ppt)
5/15/2025
Perfluoroctanesulfonicacid (PFOS)
Detected: 4.3 NG/L (ppt)
8/21/2025
One of two PFAS with an enforceable federal limit (4 ppt) since 2024.
Filtration considerations: General system types, not a specific product recommendation.