Serving roughly 7,775 people in Los Angeles County, California.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
📅Updated Quarterly
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Results for VALENCIA HEIGHTS WATER CO.
1 water provider directly on file, serving roughly 7,775 people in Los Angeles County, California.
Quick answer: VALENCIA HEIGHTS WATER CO. has no violations on file. One reading is worth knowing about: Hardness, Total (ASCACO3) was measured at 540MG/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
Lithium
PFOA
PFBS
PFOS
PFHXS
PFHXA
PFPEA
Totalhaloaceticacids (HAA5)
TTHM
Chloroform
Bromoform
Bromodichloromethane
Dibromochloromethane
Dichloroaceticacid
Trichloroaceticacid
Dibromoaceticacid
Nitrate
Combined Uranium
Gross Alpha Particle Activity
Perchlorate
Magnesium
Potassium
Sodium
Calcium
Hardness, Total (ASCACO3)
Alkalinity, Total
Alkalinity, Bicarbonate
TDS
Sulfate
Chloride
Fluoride
pH
Odor
Conductivity (at 25°C)
Utility VALENCIA HEIGHTS WATER CO.Population served 7,775Owner Private
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
Combined Uranium
Detected: 12 PCI/L
10/1/2025
A naturally occurring radioactive metal. Long-term exposure above the legal limit is associated with kidney effects and increased cancer risk.
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
Totalhaloaceticacids (HAA5)
Detected: 7 UG/L (ppb)
10/27/2025
TTHM
Detected: 18 UG/L (ppb)
10/27/2025
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: 1.5 UG/L (ppb)
10/27/2025
One of the individual trihalomethane disinfection byproducts, formed when chlorine reacts with organic matter.
Bromoform
Detected: 6.6 UG/L (ppb)
10/27/2025
Bromodichloromethane
Detected: 3.7 UG/L (ppb)
10/27/2025
Dibromochloromethane
Detected: 5.8 UG/L (ppb)
10/27/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Nitrate
Detected: 3.6 MG/L (ppm)
10/22/2025
Commonly from agricultural fertilizer runoff or septic systems. Above the legal limit, it's an immediate concern especially for infants.
Sulfate
Detected: 230 MG/L (ppm)
9/17/2025
Chloride
Detected: 98 MG/L (ppm)
9/17/2025
Fluoride
Detected: 0.62 MG/L (ppm)
9/17/2025
Often added deliberately for dental health; can also occur naturally.
Minerals
Everyday minerals that mainly affect taste and water hardness
Magnesium
Detected: 46 MG/L (ppm)
9/17/2025
Potassium
Detected: 2.5 MG/L (ppm)
9/17/2025
Sodium
Detected: 68 MG/L (ppm)
9/17/2025
Calcium
Detected: 140 MG/L (ppm)
9/17/2025
Properties
General water characteristics like pH, hardness, and cloudiness (turbidity)
Gross Alpha Particle Activity
Detected: 9.4 PCI/L
10/1/2025
Hardness, Total (ASCACO3)
Detected: 540 MG/L (ppm)
9/17/2025
pH
Detected: 7.4 PH
9/17/2025
A measure of how acidic or basic the water is (7 is neutral). Affects taste and plumbing, not a direct health measure.
PFAS & Emerging Contaminants
Human-made "forever chemicals" and other substances not yet fully regulated
Lithium
Detected: 9.3 µg/L (ppb)
12/2/2024
Occurs naturally in some groundwater. Not currently federally regulated in drinking water.
PFOA
Detected: 0.0057 µg/L (ppb)
12/2/2024
One of two PFAS with an enforceable federal limit (4 ppt) since 2024.
PFBS
Detected: 0.0041 µg/L (ppb)
12/2/2024
PFOS
Detected: 0.0044 µg/L (ppb)
11/5/2024
One of two PFAS with an enforceable federal limit (4 ppt) since 2024.
PFHXS
Detected: 0.0036 µg/L (ppb)
12/2/2024
PFHXA
Detected: 0.0043 µg/L (ppb)
12/2/2024
PFPEA
Detected: 0.0037 µg/L (ppb)
12/2/2024
Calculated Parameters
Values worked out mathematically from other test results, not measured directly
Alkalinity, Bicarbonate
Detected: 360 MG/L (ppm)
9/17/2025
Other
Additional substances tested that don't fit neatly into the categories above
Dichloroaceticacid
Detected: 2.4 UG/L (ppb)
10/27/2025
Trichloroaceticacid
Detected: 1.2 UG/L (ppb)
10/27/2025
Dibromoaceticacid
Detected: 4.6 UG/L (ppb)
10/27/2025
Perchlorate
Detected: 1.4 UG/L (ppb)
10/15/2025
Can occur naturally or from industrial/military sources; may interfere with thyroid function at elevated levels.
Alkalinity, Total
Detected: 290 MG/L (ppm)
9/17/2025
TDS
Detected: 780 MG/L (ppm)
9/17/2025
Odor
Detected: 1 TON
9/17/2025
Conductivity (at 25°C)
Detected: 1300 UMHO/CM
9/17/2025
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.