Skip to content

States / California

Orange County, CA

The federal environmental record for Orange County (population 3,135,755): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.

4

Superfund NPL sites

32

federal cleanup sites

18

PFAS-detecting water systems

95

TRI facilities

201

open tank releases

Superfund NPL sites

SiteCityStatusListed
El Toro Marine Corps Air StationEl Toroon the NPL02/21/1990
McCollFullertonon the NPL09/08/1983
Orange County North BasinOrange Countyon the NPL09/03/2020
Ralph Gray Trucking Co.Westminsterdeleted10/14/1992

Drinking water: PFAS testing

Public water systems serving Orange with at least one PFAS detection under UCMR5. The federal limit for PFOA and PFOS is 4 ng/L; EPA proposed in May 2026 to rescind the limits for the other compounds, which are shown for information.

SystemHighest resultsReading
CITY OF ANAHEIM

CA3010001

PFOS: 29 ng/L

PFBA: 16.5 ng/L

PFPeA: 12.4 ng/L

above final limit
CITY OF BUENA PARK

CA3010003

PFOS: 6.8 ng/L

PFHxS: 3.9 ng/L

above final limit
CITY OF FULLERTON

CA3010010

PFOS: 13.3 ng/L

PFPeA: 13.2 ng/L

PFHxA: 12.4 ng/L

above final limit
GOLDEN STATE WC - WEST ORANGE COUNTY

CA3010022

PFOS: 16 ng/L

PFHxS: 9.3 ng/L

PFOA: 8.1 ng/L

above final limit
CITY OF ORANGE

CA3010027

PFPeA: 17.7 ng/L

PFOS: 17 ng/L

PFBA: 12.6 ng/L

above final limit
GOLDEN STATE WC - PLACENTIA/YORBA LINDA

CA3010035

PFPeA: 10.9 ng/L

PFHxA: 7.7 ng/L

PFBA: 6.7 ng/L

above final limit
CITY OF SANTA ANA

CA3010038

PFOS: 14.2 ng/L

PFOA: 8.9 ng/L

PFHxS: 8.4 ng/L

above final limit
CITY OF TUSTIN

CA3010046

PFOS: 4.2 ng/L

PFPeA: 3.7 ng/L

PFHxS: 3.5 ng/L

above final limit
CITY OF HUNTINGTON BEACH

CA3010053

PFOS: 6.1 ng/L

PFHxS: 3.3 ng/L

above final limit
CITY OF GARDEN GROVE

CA3010062

PFOS: 19 ng/L

PFBA: 14.6 ng/L

PFHxS: 9.6 ng/L

above final limit
CITY OF WESTMINSTER

CA3010064

PFOS: 5.3 ng/L

PFHxS: 5 ng/L

above final limit
YORBA LINDA WATER DISTRICT

CA3010037

PFBA: 20.6 ng/L

PFPeA: 5.3 ng/L

detected
SOUTH COAST WATER DISTRICT

CA3010042

PFBA: 5.8 ng/L

detected
GOLDEN STATE WC - COWAN HEIGHTS

CA3010047

PFPeA: 7 ng/L

PFBA: 6.9 ng/L

detected
CITY OF FOUNTAIN VALLEY

CA3010069

PFHxS: 3.5 ng/L

detected
EL TORO WATER DISTRICT

CA3010079

PFBA: 6.7 ng/L

detected
SERRANO WATER DISTRICT

CA3010082

PFPeA: 16.1 ng/L

PFBA: 11.1 ng/L

detected
IRVINE RANCH WATER DISTRICT

CA3010092

PFBA: 7.9 ng/L

PFPeA: 3.8 ng/L

detected

On a system with detections? Testing and treatment options

Facilities reporting toxic releases (2024)

95 facilities in Orange filed TRI reports for 2024, totalling 383k lb released. The 25 largest by volume:

FacilityCityTop chemicalsTotal released
XERXES CORPANAHEIMStyrene85k lb
HOWMET GLOBAL FASTENING SYSTEMS INC.FULLERTONNitric acid, Cadmium And Cadmium Compounds45k lb
CONTINUOUS COATING CORPORANGEZinc compounds37k lb
NEWPORT FAB LLC (DBA TOWERJAZZ)NEWPORT BEACHNitrate compounds (water dissociable; reportable only when in aqueous solution), Ammonia33k lb
NEWPORT LAMINATES INCSANTA ANAStyrene22k lb
BRASSTECH INC.SANTA ANACopper20k lb
ARROWHEAD PRODUCTS CORPLOS ALAMITOSLead compounds, Chromium compounds (except for chromite ore mined in the Transvaal Region)15k lb
TRIUMPH PROCESSING-EMBEE DIVSANTA ANALead And Lead Compounds, Chromium compounds (except for chromite ore mined in the Transvaal Region)14k lb
CHERRY AEROSPACESANTA ANANickel, Nitrate compounds (water dissociable; reportable only when in aqueous solution)13k lb
HOOD MANUFACTURING INCSANTA ANAStyrene10k lb
CYTEC SOLVAY COMPOSITE MATERIALS ANAHEIMANAHEIMPhenol, Formaldehyde10k lb
AIR INDUSTRIES CO A PCC COGARDEN GROVENickel, Chromium8k lb
SUMMIT INTERCONNECT INCANAHEIMCopper And Copper Compounds, Lead And Lead Compounds8k lb
ALUMINUM PRECISION PRODUCTS INCSANTA ANANitrate compounds (water dissociable; reportable only when in aqueous solution), Zinc compounds8k lb
TTM TECHNOLOGIES N.A. LLCSANTA ANACertain glycol ethers, Copper compounds6k lb
ALUMINUM PRECISION PRODUCTS ALTON ST FACILITY DIVSANTA ANANitrate compounds (water dissociable; reportable only when in aqueous solution), Zinc compounds5k lb
ARLON GRAPHICS LLCPLACENTIAToluene, Xylene (mixed isomers)5k lb
ANILLO INDUSTRIES INC.ORANGEChromium, Nickel5k lb
CYTEC SOLVAY COMPOSITE MATERIALS ORANGEORANGEMethanol, Tetrabromobisphenol A3k lb
GRISWOLD INDUSTRIESCOSTA MESANickel, Copper3k lb
BRISTOL INDUSTRIES LLCBREANickel, Chromium3k lb
GKN AEROSPACE TRANSPARENCY SYSTEMS INC.GARDEN GROVEMethyl methacrylate3k lb
CHEVRON HUNTINGTON BEACH TERMINALHUNTINGTON BEACHXylene (mixed isomers), Toluene2k lb
SUMMIT INTERCONNECT INC. ORANGEORANGENitrate compounds (water dissociable; reportable only when in aqueous solution), Copper And Copper Compounds2k lb
KINSBURSKY BROTHERS SUPPLY INC.ANAHEIMNickel compounds, Cobalt And Cobalt Compounds2k lb

Underground fuel tanks

EPA's UST Finder records 938 tank facilities in Orange: 2,513 tanks in service and 0 closed. 3,016 fuel releases are on record, of which 201 remain open. Open releases are cleanups that have not reached "no further action".

Radon

EPA maps Orange as Zone 3, the lowest predicted indoor radon (under 2 pCi/L average). Radon and air quality are covered in depth on lung.com.

The record for one specific address

County figures blur what matters: distance. The Address Environmental Report runs these same federal datasets against one address and reports every site, tank, polluter and water result around it, with distances, in about a minute.

Get the report - $39

All federal cleanup sites on file

The wider Superfund enterprise inventory (SEMS) for Orange, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.

  • ANODYNE INCSANTA ANA
  • ANODYNE INCSANTA ANA
  • CA160_COSTA MESA_ARCCOSTA MESA
  • DATA CIRCUITSORANGE
  • FREEWAY AUTO WRECKINGSANTA ANA
  • FULLERTON MANUFACTURINGFULLERTON
  • GE PLASTICSSANTA ANA
  • GOLDEN WEST TOWING EQUIPMENT LPFULLERTON
  • GOMEZ SANDBLASTINGANAHEIM
  • IMPRESSIONS POLISHING AND PLATINGORANGE
  • INMONT CORPANAHEIM
  • KHYBER FOODSFULLERTON
  • LM CHROME CORPORATIONSANTA ANA
  • MBH ELECTRONICSSANTA ANA
  • MCCOLLFULLERTON
  • MONITOR PLATINGANAHEIM
  • NIPTON UNAUTHORIZED LANDFILLNIPTON
  • NWS SEAL BEACH WEAPON STATIONSEAL BEACH
  • ORANGE COAST PLATINGSANTA ANA
  • ORANGE COUNTY METAL PROCESSINGFULLERTON
  • ORANGE COUNTY METAL PROCESSINGFULLERTON
  • POLYMER DEVELOPMENT LABS #2HUNTINGTON BEACH
  • RALPH GRAY TRUCKING CO.WESTMINSTER
  • REMTECH RESTORATION CORPFULLERTON
  • RICHARDS W C OF CALIFORINAANAHEIM
  • ROBLEDO MERCURYMISSION VIEJO
  • S & S PLATINGANAHEIM
  • SA RECYCLINGANAHEIM
  • USPS HUNTINGTON BEACH VMFHUNTINGTON BEACH
  • VISTA PAINTFULLERTON
  • WESTERN DIGITAL CORPORATIONCOSTA MESA
  • XEROX CORPORATIONSANTA ANA