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EPA SDWIS · Orange County, California

GOLDEN STATE WC - WEST ORANGE COUNTY Water Quality Report

Serving roughly 114,379 people in Orange County, California.

Data current as of July 2026
🔍Straight from EPA
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Results for GOLDEN STATE WC - WEST ORANGE COUNTY

1 water provider directly on file, serving roughly 114,379 people in Orange County, California.

Quick answer: GOLDEN STATE WC - WEST ORANGE COUNTY has no violations on file. One reading is worth knowing about: Turbidity was measured at 1NTU, 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.
Utility GOLDEN STATE WC - WEST ORANGE COUNTY Population served 114,379 Owner Private
No violations on file

Contaminants found

Metals
Naturally occurring or corrosion-related elements, e.g. lead, arsenic, copper
Lead Summary
Detected: 0.0022 mg/L (ppm)
12/31/2025
Combined Uranium
Detected: 3.63 PCI/L
9/2/2025
A naturally occurring radioactive metal. Long-term exposure above the legal limit is associated with kidney effects and increased cancer risk.
Iron
Detected: 27 UG/L (ppb)
10/6/2025
Mostly an aesthetic issue (metallic taste, staining) rather than a health concern at typical levels.
Manganese
Detected: 43 UG/L (ppb)
10/6/2025
Mainly a taste/staining concern at typical levels; long-term neurological research at high chronic exposure is ongoing.
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Sulfate
Detected: 143 MG/L (ppm)
7/31/2025
Chloride
Detected: 73.9 MG/L (ppm)
7/31/2025
Fluoride
Detected: 0.46 MG/L (ppm)
7/31/2025
Often added deliberately for dental health; can also occur naturally.
Nitrate-Nitrite
Detected: 3.6 MG/L (ppm)
7/31/2025
Nitrate
Detected: 3.6 MG/L (ppm)
7/31/2025
Commonly from agricultural fertilizer runoff or septic systems. Above the legal limit, it's an immediate concern especially for infants.
Minerals
Everyday minerals that mainly affect taste and water hardness
Calcium
Detected: 114 MG/L (ppm)
7/31/2025
Magnesium
Detected: 19.2 MG/L (ppm)
7/31/2025
Potassium
Detected: 3.9 MG/L (ppm)
7/31/2025
Sodium
Detected: 49.5 MG/L (ppm)
7/31/2025
Properties
General water characteristics like pH, hardness, and cloudiness (turbidity)
Hardness, Total (ASCACO3)
Detected: 364 MG/L (ppm)
7/31/2025
Gross Alpha Particle Activity
Detected: 2.93 PCI/L
9/2/2025
pH
Detected: 7.9 PH
7/31/2025
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
PFPEA
Detected: 0.0036 µg/L (ppb)
4/8/2025
PFHXA
Detected: 0.0032 µg/L (ppb)
4/8/2025
PFOA
Detected: 0.0074 µg/L (ppb)
4/8/2025
One of two PFAS with an enforceable federal limit (4 ppt) since 2024.
PFOS
Detected: 0.0049 µg/L (ppb)
5/19/2025
One of two PFAS with an enforceable federal limit (4 ppt) since 2024.
PFHXS
Detected: 0.0039 µg/L (ppb)
5/19/2025
Lithium
Detected: 30.1278 µg/L (ppb)
12/6/2023
Occurs naturally in some groundwater. Not currently federally regulated in drinking water.
VOCs (Volatile Organic Compounds)
Industrial solvents and fuel-related chemicals that evaporate easily
Bromide
Detected: 0.22 MG/L (ppm)
7/31/2025
Calculated Parameters
Values worked out mathematically from other test results, not measured directly
Alkalinity, Carbonate
Detected: 1.2 MG/L (ppm)
2/10/2025
Alkalinity, Bicarbonate
Detected: 247 MG/L (ppm)
7/31/2025
Other
Additional substances tested that don't fit neatly into the categories above
Alkalinity, Total
Detected: 202 MG/L (ppm)
7/31/2025
Carbon, Total
Detected: 0.19 MG/L (ppm)
7/31/2025
TDS
Detected: 564 MG/L (ppm)
7/31/2025
Perfluorohexanesulfonicacid (PFHxS)
Detected: 5.1 NG/L (ppt)
7/31/2025
Perfluoroctanesulfonicacid (PFOS)
Detected: 7.6 NG/L (ppt)
7/31/2025
One of two PFAS with an enforceable federal limit (4 ppt) since 2024.
Perfluoroctanoicacid (PFOA)
Detected: 3.7 NG/L (ppt)
7/31/2025
One of two PFAS with an enforceable federal limit (4 ppt) since 2024.
Perfluorobutanesulfonicacid (PFBS)
Detected: 2.8 NG/L (ppt)
7/31/2025
Perfluorohexanoicacid (PFHXA)
Detected: 3.2 NG/L (ppt)
7/31/2025
Perfluorobutanoicacid (PFBA)
Detected: 2.4 NG/L (ppt)
7/31/2025
Perfluoropentanoicacid (PFPEA)
Detected: 3.2 NG/L (ppt)
7/31/2025
Turbidity
Detected: 1 NTU
7/31/2025
A measure of water cloudiness from suspended particles.
Odor
Detected: 1 TON
7/14/2025
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.
Contaminant Whole-House Carbon Under-Sink RO Under-Sink Carbon
Total Trihalomethanes (TTHM)YesYesYes
Haloacetic Acids (HAA5)YesYesYes
ChloroformYesYesYes
Chlorine / TasteYesYesYes
Sediment / TurbidityYesYesYes
TrichloroethyleneYesYesYes
TetrachloroethyleneYesYesYes
cis-1,2-DichloroethyleneYesYesYes
1,1-DichloroethyleneYesYesYes
BromoformYesYesYes
BromodichloromethaneYesYesYes
DibromochloromethaneYesYesYes
1,1,2-TrichloroethaneYesYesYes
Vinyl ChlorideYesYesYes
Carbon TetrachlorideYesYesYes
BenzeneYesYesYes
TolueneYesYesYes
XyleneYesYesYes
BromideYesYesYes
LeadPartialYesPartial
ArsenicPartialYesPartial
Chromium-6 (Hexavalent)PartialYesPartial
CopperPartialYesPartial
Combined UraniumPartialYesPartial
PFOAPartialYes*Partial
PFOSPartialYes*Partial
NitratePartialYesPartial
Combined RadiumPartialYesPartial
PFPEAPartialYes*Partial
PFHXAPartialYes*Partial
PFHXSPartialYes*Partial
LithiumPartialYes*Partial
Alkalinity, TotalPartialYesPartial
Carbon, TotalPartialYesPartial
TDSPartialYesPartial
SulfatePartialYesPartial
ChloridePartialYesPartial
FluoridePartialYesPartial
Nitrate-NitritePartialYesPartial
Perfluorohexanesulfonicacid (PFHxS)PartialYesPartial
Perfluoroctanesulfonicacid (PFOS)PartialYesPartial
Perfluoroctanoicacid (PFOA)PartialYesPartial
Perfluorobutanesulfonicacid (PFBS)PartialYesPartial
Perfluorohexanoicacid (PFHXA)PartialYesPartial
Perfluorobutanoicacid (PFBA)PartialYesPartial
Perfluoropentanoicacid (PFPEA)PartialYesPartial
Combined UraniumPartialYesPartial
OdorPartialYesPartial
IronPartialYesPartial
ManganesePartialYesPartial
Coliform Bacteria (indicator)NoYesNo
CalciumNoPartialNo
MagnesiumNoPartialNo
PotassiumNoPartialNo
SodiumNoPartialNo
Hardness, Total (ASCACO3)NoNoNo
Alkalinity, CarbonateNoNoNo
Alkalinity, BicarbonateNoNoNo
Gross Alpha Particle ActivityNoNoNo
pHNoNoNo

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What is TTHM? Understanding EPA Violation Status Is Chromium-6 Dangerous? Whole-House vs. Under-Sink Filtration Lead and Copper in Drinking Water What is PFAS? Arsenic and Uranium Explained Nitrate and Fluoride Explained Water Hardness, pH, and Turbidity What is Coliform Bacteria?