GOLDEN STATE WC - COWAN HEIGHTS Water Quality Report
Serving roughly 6,997 people in Orange County, California.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
📅Updated Quarterly
🏠Local Expertise
Results for GOLDEN STATE WC - COWAN HEIGHTS
1 water provider directly on file, serving roughly 6,997 people in Orange County, California.
Quick answer: GOLDEN STATE WC - COWAN HEIGHTS has no violations on file. One reading is worth knowing about: Lead was measured at 8.7UG/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
PFBA
PFPEA
Lead
Totalhaloaceticacids (HAA5)
TTHM
Chloroform
Bromoform
Bromodichloromethane
Dibromochloromethane
Dichloroaceticacid
Trichloroaceticacid
Dibromoaceticacid
Copper, Free
Alkalinity, Total
Carbon, Total
TDS
Chloride
Sulfate
Nitrate
Perfluorohexanoicacid (PFHXA)
Perfluorobutanoicacid (PFBA)
Perfluoropentanoicacid (PFPEA)
Magnesium
Potassium
Sodium
Calcium
Hardness, Total (ASCACO3)
Bromide
Alkalinity, Bicarbonate
Fluoride
Nitrate-Nitrite
Perfluorobutanesulfonicacid (PFBS)
Perfluoroheptanoicacid (PFHPA)
Perfluorohexanesulfonicacid (PFHxS)
Perfluoroctanesulfonicacid (PFOS)
Perfluoroctanoicacid (PFOA)
Perfluoropentanesulfonicacid (PFPES)
Combined Uranium
Gross Alpha Particle Activity
pH
Vanadium, Total
Iron
Chromium, Hex
Nickel
Barium
Selenium
Conductivity (at 25°C)
Utility GOLDEN STATE WC - COWAN HEIGHTSPopulation served 6,997Owner Private
No violations on file
Contaminants found
Metals
Naturally occurring or corrosion-related elements, e.g. lead, arsenic, copper
Lead Summary
Detected: 0.0084 mg/L (ppm)
12/31/2025
Lead
Detected: 8.7 UG/L (ppb)
6/25/2025
A metal that can leach from old pipes, solder, and fixtures. Current medical guidance holds there is no truly safe level of lead exposure, especially for children and pregnant women.
Copper, Free
Detected: 12 UG/L (ppb)
6/26/2025
Combined Uranium
Detected: 1.59 PCI/L
4/17/2025
A naturally occurring radioactive metal. Long-term exposure above the legal limit is associated with kidney effects and increased cancer risk.
Vanadium, Total
Detected: 2.6 UG/L (ppb)
1/29/2025
Iron
Detected: 9.6 UG/L (ppb)
1/29/2025
Mostly an aesthetic issue (metallic taste, staining) rather than a health concern at typical levels.
Chromium, Hex
Detected: 0.2 UG/L (ppb)
4/17/2025
Nickel
Detected: 1.8 UG/L (ppb)
1/29/2025
Barium
Detected: 99.3 UG/L (ppb)
1/29/2025
Selenium
Detected: 1 UG/L (ppb)
1/29/2025
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
Totalhaloaceticacids (HAA5)
Detected: 4.5 UG/L (ppb)
10/28/2025
TTHM
Detected: 22 UG/L (ppb)
10/28/2025
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: 4.7 UG/L (ppb)
10/28/2025
One of the individual trihalomethane disinfection byproducts, formed when chlorine reacts with organic matter.
Bromoform
Detected: 2.7 UG/L (ppb)
10/28/2025
Bromodichloromethane
Detected: 6.3 UG/L (ppb)
10/28/2025
Dibromochloromethane
Detected: 7.8 UG/L (ppb)
10/28/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Chloride
Detected: 75.4 MG/L (ppm)
4/17/2025
Sulfate
Detected: 98 MG/L (ppm)
4/17/2025
Nitrate
Detected: 2.1 MG/L (ppm)
4/17/2025
Commonly from agricultural fertilizer runoff or septic systems. Above the legal limit, it's an immediate concern especially for infants.
Fluoride
Detected: 0.2 MG/L (ppm)
4/17/2025
Often added deliberately for dental health; can also occur naturally.
Nitrate-Nitrite
Detected: 1.94 MG/L (ppm)
4/17/2025
Minerals
Everyday minerals that mainly affect taste and water hardness
Magnesium
Detected: 13.4 MG/L (ppm)
1/29/2025
Potassium
Detected: 2.3 MG/L (ppm)
1/29/2025
Sodium
Detected: 61 MG/L (ppm)
1/29/2025
Calcium
Detected: 74 MG/L (ppm)
1/29/2025
Properties
General water characteristics like pH, hardness, and cloudiness (turbidity)
Hardness, Total (ASCACO3)
Detected: 240 MG/L (ppm)
1/29/2025
Gross Alpha Particle Activity
Detected: 2.41 PCI/L
4/17/2025
pH
Detected: 7.8 PH
4/17/2025
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: 9.4 µg/L (ppb)
10/27/2025
Occurs naturally in some groundwater. Not currently federally regulated in drinking water.
PFBA
Detected: 0.0053 µg/L (ppb)
10/27/2025
PFPEA
Detected: 0.007 µg/L (ppb)
10/27/2025
VOCs (Volatile Organic Compounds)
Industrial solvents and fuel-related chemicals that evaporate easily
Bromide
Detected: 0.15 MG/L (ppm)
4/17/2025
Calculated Parameters
Values worked out mathematically from other test results, not measured directly
Alkalinity, Bicarbonate
Detected: 182 MG/L (ppm)
4/17/2025
Other
Additional substances tested that don't fit neatly into the categories above
Dichloroaceticacid
Detected: 1.7 UG/L (ppb)
10/28/2025
Trichloroaceticacid
Detected: 1.4 UG/L (ppb)
10/28/2025
Dibromoaceticacid
Detected: 1.4 UG/L (ppb)
10/28/2025
Alkalinity, Total
Detected: 153 MG/L (ppm)
4/17/2025
Carbon, Total
Detected: 0.13 MG/L (ppm)
4/17/2025
TDS
Detected: 458 MG/L (ppm)
4/17/2025
Perfluorohexanoicacid (PFHXA)
Detected: 3.8 NG/L (ppt)
4/17/2025
Perfluorobutanoicacid (PFBA)
Detected: 6 NG/L (ppt)
4/17/2025
Perfluoropentanoicacid (PFPEA)
Detected: 10.5 NG/L (ppt)
4/17/2025
Perfluorobutanesulfonicacid (PFBS)
Detected: 6.4 NG/L (ppt)
4/17/2025
Perfluoroheptanoicacid (PFHPA)
Detected: 4.7 NG/L (ppt)
4/17/2025
Perfluorohexanesulfonicacid (PFHxS)
Detected: 11.7 NG/L (ppt)
4/17/2025
Perfluoroctanesulfonicacid (PFOS)
Detected: 25.7 NG/L (ppt)
4/17/2025
One of two PFAS with an enforceable federal limit (4 ppt) since 2024.
Perfluoroctanoicacid (PFOA)
Detected: 16.7 NG/L (ppt)
4/17/2025
One of two PFAS with an enforceable federal limit (4 ppt) since 2024.
Perfluoropentanesulfonicacid (PFPES)
Detected: 2.3 NG/L (ppt)
4/17/2025
Conductivity (at 25°C)
Detected: 712 UMHO/CM
10/27/2025
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.