Serving roughly 174,226 people in Orange County, California.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
📅Updated Quarterly
🏠Local Expertise
Results for CITY OF GARDEN GROVE
1 water provider directly on file, serving roughly 174,226 people in Orange County, California.
Quick answer: CITY OF GARDEN GROVE has no violations on file. One reading is worth knowing about: PFHXS was measured at 0.0087µg/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
PFPEA
PFHXS
PFOS
PFOA
PFHXA
PFBA
Lithium
Lead
TTHM
Totalhaloaceticacids (HAA5)
Chloroform
Bromoform
Bromodichloromethane
Dibromochloromethane
Trichloroaceticacid
Dibromoaceticacid
Dichloroaceticacid
Copper, Free
Chloride
Sulfate
Alkalinity, Total
TDS
Carbon, Total
Nitrate
Perfluoroheptanoicacid (PFHPA)
Perfluoroctanoicacid (PFOA)
Perfluorohexanoicacid (PFHXA)
Perfluorobutanoicacid (PFBA)
Perfluoropentanoicacid (PFPEA)
Utility CITY OF GARDEN GROVEPopulation served 174,226Owner Local government
Naturally occurring or corrosion-related elements, e.g. lead, arsenic, copper
Lead Summary
Detected: 0 mg/L (ppm)
12/31/2025
Lead
Detected: 8.3 UG/L (ppb)
6/20/2025
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: 180 UG/L (ppb)
6/24/2025
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
TTHM
Detected: 0.84 UG/L (ppb)
9/4/2025
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.
Totalhaloaceticacids (HAA5)
Detected: 3 UG/L (ppb)
9/4/2025
Chloroform
Detected: 1.72 UG/L (ppb)
9/4/2025
One of the individual trihalomethane disinfection byproducts, formed when chlorine reacts with organic matter.
Bromoform
Detected: 0.84 UG/L (ppb)
9/4/2025
Bromodichloromethane
Detected: 5.06 UG/L (ppb)
9/4/2025
Dibromochloromethane
Detected: 5.91 UG/L (ppb)
9/4/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Chloride
Detected: 82.1 MG/L (ppm)
7/30/2025
Sulfate
Detected: 108 MG/L (ppm)
7/30/2025
Nitrate
Detected: 2.19 MG/L (ppm)
7/30/2025
Commonly from agricultural fertilizer runoff or septic systems. Above the legal limit, it's an immediate concern especially for infants.
PFAS & Emerging Contaminants
Human-made "forever chemicals" and other substances not yet fully regulated
PFPEA
Detected: 0.0035 µg/L (ppb)
4/24/2025
PFHXS
Detected: 0.0087 µg/L (ppb)
4/24/2025
PFOS
Detected: 0.0183 µg/L (ppb)
4/24/2025
One of two PFAS with an enforceable federal limit (4 ppt) since 2024.
PFOA
Detected: 0.008 µg/L (ppb)
4/24/2025
One of two PFAS with an enforceable federal limit (4 ppt) since 2024.
PFHXA
Detected: 0.0036 µg/L (ppb)
4/24/2025
PFBA
Detected: 0.0076 µg/L (ppb)
4/25/2024
Lithium
Detected: 28.9017 µg/L (ppb)
10/20/2025
Occurs naturally in some groundwater. Not currently federally regulated in drinking water.
Other
Additional substances tested that don't fit neatly into the categories above
Trichloroaceticacid
Detected: 3.66 UG/L (ppb)
6/5/2025
Dibromoaceticacid
Detected: 3.82 UG/L (ppb)
6/5/2025
Dichloroaceticacid
Detected: 3 UG/L (ppb)
9/4/2025
Alkalinity, Total
Detected: 191 MG/L (ppm)
7/30/2025
TDS
Detected: 508 MG/L (ppm)
7/30/2025
Carbon, Total
Detected: 0.23 MG/L (ppm)
7/30/2025
Perfluoroheptanoicacid (PFHPA)
Detected: 3.7 NG/L (ppt)
4/23/2025
Perfluoroctanoicacid (PFOA)
Detected: 7.7 NG/L (ppt)
4/23/2025
One of two PFAS with an enforceable federal limit (4 ppt) since 2024.
Perfluorohexanoicacid (PFHXA)
Detected: 9.4 NG/L (ppt)
9/17/2025
Perfluorobutanoicacid (PFBA)
Detected: 6.2 NG/L (ppt)
9/17/2025
Perfluoropentanoicacid (PFPEA)
Detected: 9.3 NG/L (ppt)
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.