LOS ANGELES CWWD 40, REG. 38-LAKE LA Water Quality Report
Serving roughly 12,568 people in Los Angeles County, California.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
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Results for LOS ANGELES CWWD 40, REG. 38-LAKE LA
1 water provider directly on file, serving roughly 12,568 people in Los Angeles County, California.
Quick answer: LOS ANGELES CWWD 40, REG. 38-LAKE LA has no violations on file and no single reading stands out against its peers (601 other providers in this area). It serves roughly 12,568 people, and the full breakdown below reflects everything EPA and California have on record for it.
Lead Summary
Totalhaloaceticacids (HAA5)
TTHM
Bromodichloromethane
Dibromochloromethane
Bromoform
Chloroform
Dichloroaceticacid
Dibromoaceticacid
Monobromoaceticacid
Trichloroaceticacid
Sulfate
Chloride
Nitrate
Chromium, Hex
Perchlorate
Utility LOS ANGELES CWWD 40, REG. 38-LAKE LAPopulation served 12,568Owner Local government
No violations on file
Contaminants found
Metals
Naturally occurring or corrosion-related elements, e.g. lead, arsenic, copper
Lead Summary
Detected: 0 mg/L (ppm)
12/31/2023
Chromium, Hex
Detected: 9.3 UG/L (ppb)
3/19/2025
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
Totalhaloaceticacids (HAA5)
Detected: 4.3 UG/L (ppb)
8/20/2025
TTHM
Detected: 22 UG/L (ppb)
8/20/2025
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.
Bromodichloromethane
Detected: 5.9 UG/L (ppb)
8/20/2025
Dibromochloromethane
Detected: 9.3 UG/L (ppb)
8/20/2025
Bromoform
Detected: 4.4 UG/L (ppb)
8/20/2025
Chloroform
Detected: 2.4 UG/L (ppb)
8/20/2025
One of the individual trihalomethane disinfection byproducts, formed when chlorine reacts with organic matter.
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Sulfate
Detected: 96 MG/L (ppm)
1/22/2025
Chloride
Detected: 32 MG/L (ppm)
1/22/2025
Nitrate
Detected: 2.2 MG/L (ppm)
1/22/2025
Commonly from agricultural fertilizer runoff or septic systems. Above the legal limit, it's an immediate concern especially for infants.
Other
Additional substances tested that don't fit neatly into the categories above
Dichloroaceticacid
Detected: 1.8 UG/L (ppb)
8/20/2025
Dibromoaceticacid
Detected: 2.5 UG/L (ppb)
8/20/2025
Monobromoaceticacid
Detected: 1.6 UG/L (ppb)
5/21/2025
Trichloroaceticacid
Detected: 1.4 UG/L (ppb)
8/20/2025
Perchlorate
Detected: 0.53 UG/L (ppb)
1/22/2025
Can occur naturally or from industrial/military sources; may interfere with thyroid function at elevated levels.
Filtration considerations: See the table below for how whole-house carbon, under-sink reverse osmosis, and under-sink carbon systems compare against what's actually on file here. These are general system types, not a specific product recommendation.