Serving roughly 84,292 people in Orange County, California.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
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Results for YORBA LINDA WATER DISTRICT
1 water provider directly on file, serving roughly 84,292 people in Orange County, California.
Quick answer: YORBA LINDA WATER DISTRICT has no violations on file. One reading is worth knowing about: PFBA was measured at 0.0175µg/L, among the highest of the 167 providers on file in this area. It's the most notable figure in this system's record among its 167 local peers.
Lead Summary
Lithium
PFPEA
PFBA
Totalhaloaceticacids (HAA5)
TTHM
Chloroform
Bromoform
Bromodichloromethane
Dibromochloromethane
Dichloroaceticacid
Trichloroaceticacid
Dibromoaceticacid
Alkalinity, Total
Carbon, Total
TDS
Chloride
Sulfate
Fluoride
Utility YORBA LINDA WATER DISTRICTPopulation served 84,292Owner 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)
12/31/2024
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
Totalhaloaceticacids (HAA5)
Detected: 9.6 UG/L (ppb)
10/2/2025
TTHM
Detected: 37.7 UG/L (ppb)
10/2/2025
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: 2.7 UG/L (ppb)
10/2/2025
One of the individual trihalomethane disinfection byproducts, formed when chlorine reacts with organic matter.
Bromoform
Detected: 13.3 UG/L (ppb)
10/2/2025
Bromodichloromethane
Detected: 7 UG/L (ppb)
10/2/2025
Dibromochloromethane
Detected: 14.7 UG/L (ppb)
10/2/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Chloride
Detected: 128 MG/L (ppm)
10/8/2025
Sulfate
Detected: 143 MG/L (ppm)
10/8/2025
Fluoride
Detected: 0.75 MG/L (ppm)
4/1/2025
Often added deliberately for dental health; can also occur naturally.
PFAS & Emerging Contaminants
Human-made "forever chemicals" and other substances not yet fully regulated
Lithium
Detected: 9.8561 µg/L (ppb)
5/21/2024
Occurs naturally in some groundwater. Not currently federally regulated in drinking water.
PFPEA
Detected: 0.0042 µg/L (ppb)
5/21/2024
PFBA
Detected: 0.0175 µg/L (ppb)
5/21/2024
Other
Additional substances tested that don't fit neatly into the categories above
Dichloroaceticacid
Detected: 2.8 UG/L (ppb)
10/2/2025
Trichloroaceticacid
Detected: 1.8 UG/L (ppb)
10/2/2025
Dibromoaceticacid
Detected: 5 UG/L (ppb)
10/2/2025
Alkalinity, Total
Detected: 220 MG/L (ppm)
10/8/2025
Carbon, Total
Detected: 0.95 MG/L (ppm)
10/8/2025
TDS
Detected: 660 MG/L (ppm)
10/8/2025
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.