Serving roughly 81,998 people in Orange County, California.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
📅Updated Quarterly
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Results for CITY OF BUENA PARK
1 water provider directly on file, serving roughly 81,998 people in Orange County, California.
Quick answer: CITY OF BUENA PARK has no violations on file. One reading is worth knowing about: Fluoride was measured at 0.96MG/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
PFOS
PFHXS
Fluoride
Totalhaloaceticacids (HAA5)
TTHM
Chloroform
Bromoform
Bromodichloromethane
Dibromochloromethane
Dichloroaceticacid
Trichloroaceticacid
Dibromoaceticacid
Magnesium
Potassium
Sodium
Calcium
Hardness, Total (ASCACO3)
Bromide
Alkalinity, Bicarbonate
Alkalinity, Total
Carbon, Total
TDS
Sulfate
Chloride
Nitrate-Nitrite
Nitrate
Nitrite
Utility CITY OF BUENA PARKPopulation served 81,998Owner Local government
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: 6.1 UG/L (ppb)
8/11/2025
TTHM
Detected: 26.8 UG/L (ppb)
10/6/2025
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: 6 UG/L (ppb)
10/6/2025
One of the individual trihalomethane disinfection byproducts, formed when chlorine reacts with organic matter.
Bromoform
Detected: 3 UG/L (ppb)
10/6/2025
Bromodichloromethane
Detected: 8.3 UG/L (ppb)
10/6/2025
Dibromochloromethane
Detected: 9.5 UG/L (ppb)
10/6/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Fluoride
Detected: 0.96 MG/L (ppm)
10/8/2025
Often added deliberately for dental health; can also occur naturally.
Sulfate
Detected: 65 MG/L (ppm)
9/16/2025
Chloride
Detected: 20.8 MG/L (ppm)
9/16/2025
Nitrate-Nitrite
Detected: 0.16 MG/L (ppm)
9/16/2025
Nitrate
Detected: 1.95 MG/L (ppm)
7/1/2025
Commonly from agricultural fertilizer runoff or septic systems. Above the legal limit, it's an immediate concern especially for infants.
Nitrite
Detected: 0.003 MG/L (ppm)
7/1/2025
Minerals
Everyday minerals that mainly affect taste and water hardness
Magnesium
Detected: 11.5 MG/L (ppm)
7/3/2025
Potassium
Detected: 2.3 MG/L (ppm)
7/3/2025
Sodium
Detected: 53 MG/L (ppm)
7/3/2025
Calcium
Detected: 51.5 MG/L (ppm)
7/3/2025
Properties
General water characteristics like pH, hardness, and cloudiness (turbidity)
Hardness, Total (ASCACO3)
Detected: 176 MG/L (ppm)
7/3/2025
PFAS & Emerging Contaminants
Human-made "forever chemicals" and other substances not yet fully regulated
Lithium
Detected: 10.0474 µg/L (ppb)
7/30/2024
Occurs naturally in some groundwater. Not currently federally regulated in drinking water.
PFOS
Detected: 0.0054 µg/L (ppb)
1/22/2024
One of two PFAS with an enforceable federal limit (4 ppt) since 2024.
PFHXS
Detected: 0.0035 µg/L (ppb)
1/22/2024
VOCs (Volatile Organic Compounds)
Industrial solvents and fuel-related chemicals that evaporate easily
Bromide
Detected: 0.05 MG/L (ppm)
9/16/2025
Calculated Parameters
Values worked out mathematically from other test results, not measured directly
Alkalinity, Bicarbonate
Detected: 212 MG/L (ppm)
9/16/2025
Other
Additional substances tested that don't fit neatly into the categories above
Dichloroaceticacid
Detected: 3.2 UG/L (ppb)
8/11/2025
Trichloroaceticacid
Detected: 1.8 UG/L (ppb)
8/11/2025
Dibromoaceticacid
Detected: 1.1 UG/L (ppb)
8/11/2025
Alkalinity, Total
Detected: 174 MG/L (ppm)
9/16/2025
Carbon, Total
Detected: 0.12 MG/L (ppm)
9/16/2025
TDS
Detected: 296 MG/L (ppm)
9/16/2025
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.