Serving roughly 35,841 people in Los Angeles County, California.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
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Results for CRESCENTA VALLEY CWD
1 water provider directly on file, serving roughly 35,841 people in Los Angeles County, California.
Quick answer: CRESCENTA VALLEY CWD has no violations on file. One reading is worth knowing about: Dibromochloromethane was measured at 21.2UG/L, among the highest of the 601 providers on file in this area. It's the most notable figure in this system's record among its 601 local peers.
Lead Summary
Copper Summary
Lithium
PFHXA
PFOA
PFHPA
PFPEA
PFBS
PFHXS
Totalhaloaceticacids (HAA5)
TTHM
Chloroform
Bromoform
Bromodichloromethane
Dibromochloromethane
Dichloroaceticacid
Trichloroaceticacid
Dibromoaceticacid
Utility CRESCENTA VALLEY CWDPopulation served 35,841Owner 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
Copper Summary
Detected: 1.76 mg/L (ppm)
06/30/2008
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
Totalhaloaceticacids (HAA5)
Detected: 7.5 UG/L (ppb)
9/2/2025
TTHM
Detected: 52.8 UG/L (ppb)
9/2/2025
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: 7.08 UG/L (ppb)
9/2/2025
One of the individual trihalomethane disinfection byproducts, formed when chlorine reacts with organic matter.
Bromoform
Detected: 9.85 UG/L (ppb)
9/2/2025
Bromodichloromethane
Detected: 14.7 UG/L (ppb)
9/2/2025
Dibromochloromethane
Detected: 21.2 UG/L (ppb)
9/2/2025
PFAS & Emerging Contaminants
Human-made "forever chemicals" and other substances not yet fully regulated
Lithium
Detected: 10.2 µg/L (ppb)
11/22/2023
Occurs naturally in some groundwater. Not currently federally regulated in drinking water.
PFHXA
Detected: 0.0068 µg/L (ppb)
10/24/2023
PFOA
Detected: 0.0041 µg/L (ppb)
10/24/2023
One of two PFAS with an enforceable federal limit (4 ppt) since 2024.
PFHPA
Detected: 0.0031 µg/L (ppb)
2/22/2023
PFPEA
Detected: 0.0067 µg/L (ppb)
10/24/2023
PFBS
Detected: 0.0051 µg/L (ppb)
10/24/2023
PFHXS
Detected: 0.0036 µg/L (ppb)
10/24/2023
Other
Additional substances tested that don't fit neatly into the categories above
Dichloroaceticacid
Detected: 2.5 UG/L (ppb)
9/2/2025
Trichloroaceticacid
Detected: 1.9 UG/L (ppb)
9/2/2025
Dibromoaceticacid
Detected: 3.1 UG/L (ppb)
9/2/2025
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.