Serving roughly 68,871 people in Los Angeles County, California.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
📅Updated Quarterly
🏠Local Expertise
Results for VALLEY COUNTY WATER DIST.
1 water provider directly on file, serving roughly 68,871 people in Los Angeles County, California.
Quick answer: VALLEY COUNTY WATER DIST. has no violations on file and no single reading stands out against its peers (601 other providers in this area). It serves roughly 68,871 people, and the full breakdown below reflects everything EPA and California have on record for it.
Lead Summary
Nitrate
Chloromethane
Fluoride
Sulfate
Perfluorobutanesulfonicacid (PFBS)
Perfluorohexanesulfonicacid (PFHxS)
Perfluoroctanesulfonicacid (PFOS)
Perfluoroctanoicacid (PFOA)
Perfluorohexanoicacid (PFHXA)
Perfluorobutanoicacid (PFBA)
Perfluoropentanoicacid (PFPEA)
Perfluoroheptanoicacid (PFHPA)
Perfluoropentanesulfonicacid (PFPES)
Barium
1, 4-Dioxane
Trichloroethylene
Tetrachloroethylene
Perchlorate
Dichlorodifluoromethane
1, 1-Dichloroethylene
Chloroform
Xylene, Metaandpara
Xylenes, Total
TTHM
Bromoform
Bromodichloromethane
Dibromochloromethane
Dibromoaceticacid
Dichloroaceticacid
Langelier Index (pH(s))
Utility VALLEY COUNTY WATER DIST.Population served 68,871Owner 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
Barium
Detected: 120 UG/L (ppb)
9/8/2025
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
Chloroform
Detected: 1.1 UG/L (ppb)
10/29/2025
One of the individual trihalomethane disinfection byproducts, formed when chlorine reacts with organic matter.
TTHM
Detected: 5.4 UG/L (ppb)
10/29/2025
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: 1.2 UG/L (ppb)
10/29/2025
Bromodichloromethane
Detected: 1.2 UG/L (ppb)
10/29/2025
Dibromochloromethane
Detected: 1.4 UG/L (ppb)
10/29/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Nitrate
Detected: 1.1 MG/L (ppm)
10/1/2025
Commonly from agricultural fertilizer runoff or septic systems. Above the legal limit, it's an immediate concern especially for infants.
Fluoride
Detected: 0.27 MG/L (ppm)
9/8/2025
Often added deliberately for dental health; can also occur naturally.
Sulfate
Detected: 42 MG/L (ppm)
10/1/2025
Properties
General water characteristics like pH, hardness, and cloudiness (turbidity)
Langelier Index (pH(s))
Detected: 0.225 LANG
10/21/2025
VOCs (Volatile Organic Compounds)
Industrial solvents and fuel-related chemicals that evaporate easily
Chloromethane
Detected: 0.59 UG/L (ppb)
1/21/2025
Trichloroethylene
Detected: 2.7 UG/L (ppb)
10/1/2025
Tetrachloroethylene
Detected: 4.7 UG/L (ppb)
10/1/2025
Dichlorodifluoromethane
Detected: 2.5 UG/L (ppb)
5/7/2025
1, 1-Dichloroethylene
Detected: 1.2 UG/L (ppb)
5/7/2025
Petroleum Compounds
Substances associated with fuel or petroleum contamination
Xylene, Metaandpara
Detected: 0.51 UG/L (ppb)
9/2/2025
Xylenes, Total
Detected: 0.51 UG/L (ppb)
9/2/2025
Other
Additional substances tested that don't fit neatly into the categories above
Perfluorobutanesulfonicacid (PFBS)
Detected: 2.6 NG/L (ppt)
9/8/2025
Perfluorohexanesulfonicacid (PFHxS)
Detected: 4.2 NG/L (ppt)
9/8/2025
Perfluoroctanesulfonicacid (PFOS)
Detected: 2.6 NG/L (ppt)
9/8/2025
One of two PFAS with an enforceable federal limit (4 ppt) since 2024.
Perfluoroctanoicacid (PFOA)
Detected: 4.4 NG/L (ppt)
9/8/2025
One of two PFAS with an enforceable federal limit (4 ppt) since 2024.
Perfluorohexanoicacid (PFHXA)
Detected: 3.7 NG/L (ppt)
9/8/2025
Perfluorobutanoicacid (PFBA)
Detected: 3.6 NG/L (ppt)
9/8/2025
Perfluoropentanoicacid (PFPEA)
Detected: 2.9 NG/L (ppt)
9/8/2025
Perfluoroheptanoicacid (PFHPA)
Detected: 2.2 NG/L (ppt)
1/31/2025
Perfluoropentanesulfonicacid (PFPES)
Detected: 3.1 NG/L (ppt)
1/31/2025
1, 4-Dioxane
Detected: 0.69 UG/L (ppb)
10/1/2025
Perchlorate
Detected: 1 UG/L (ppb)
5/27/2025
Can occur naturally or from industrial/military sources; may interfere with thyroid function at elevated levels.
Dibromoaceticacid
Detected: 1.1 UG/L (ppb)
7/31/2025
Dichloroaceticacid
Detected: 1.3 UG/L (ppb)
4/24/2025
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.