OK DEQ State Env. Lab (EPA Drinking Water Certified) State Principal Laboratory

707 N Robinson, Oklahoma City, OK 73102

Certified drinking-water tests (132)

BacteriaNitrate & nitriteLead & copperPFASRadiologicalVOCsDisinfection byproductsPesticides, herbicides & PCBsArsenic & other metalsMinerals & general chemistry

Bacteria (coliform, E. coli) (5)

Enterococci (SM 9230 D 23rd Ed.)
Escherichia coli (SM 9223 B (Colilert Quanti-Tray) 23rd ED (2016))
Fecal coliforms (SM 9222 D 23rd ED (2014))
Heterotrophic plate count (SimPlate«)
Total coliforms (SM 9222 B 23rd ED (2015))

Nitrate & nitrite (3)

Nitrate as N (EPA 353.2_2_1993)
Nitrate plus Nitrite as N (EPA 353.2_2_1993)
Nitrite as N (EPA 353.2_2_1993)

Lead & copper (2)

Copper (EPA 200.7_4.4_1994)
Lead (EPA 200.7_4.4_1994)

PFAS ("forever chemicals") (6)

Hexafluoropropyleneoxide dimer acid (HFPO-DA) (GenX) (EPA 537.1 Rev. 2.0 (2020))
Perfluorobutanesulfonic acid (PFBS) (EPA 537.1 Rev. 2.0 (2020))
Perfluorohexane sulfonate (PFHxS) (EPA 537.1 Rev. 2.0 (2020))
Perfluorononanoate (PFNA) (EPA 537.1 Rev. 2.0 (2020))
Perfluorooctane sulfonic acid (PFOS) (EPA 537.1 Rev. 2.0 (2020))
Perfluorooctanoic acid (PFOA) (EPA 537.1 Rev. 2.0 (2020))

Radiological (radium, uranium, gross alpha) (2)

Strontium (EPA 200.7_4.4_1994)
Uranium (mass) (EPA 200.8_5.4_1994)

VOCs (benzene, solvents, fuel compounds) (21)

1,1,1-Trichloroethane (EPA 524.3)
1,1,2-Trichloroethane (EPA 524.3)
1,1-Dichloroethylene (EPA 524.3)
1,2,4-Trichlorobenzene (EPA 524.3)
1,2-Dichlorobenzene (EPA 524.3)
1,2-Dichloroethane (EPA 524.3)
1,2-Dichloropropane (EPA 524.3)
1,4-Dichlorobenzene (EPA 524.3)
Benzene (EPA 524.3)
Carbon tetrachloride (EPA 524.3)
Chlorobenzene (EPA 524.3)
Ethylbenzene (EPA 524.3)
Methylene chloride (Dichloromethane) (EPA 524.3)
Styrene (EPA 524.3)
Tetrachloroethylene (Perchloroethylene) (EPA 524.3)
Toluene (EPA 524.3)
Trichloroethene (Trichloroethylene) (EPA 524.3)
Vinyl chloride (chloroethene) (EPA 524.3)
Xylene (total) (EPA 524.3)
cis-1,2-Dichloroethylene (EPA 524.3)
trans-1,2-Dicloroethylene (EPA 524.3)

Disinfection byproducts (THMs, HAA5) (15)

1,2-Dibromo-3-chloropropane (DBCP) (Dibromochloropropane) (EPA 504.1_1.1_1995)
Bromate (EPA 300.1)
Bromoacetic acid (EPA 552.3 Rev 1 (2003))
Bromochloroacetic acid (EPA 552.3 Rev 1 (2003))
Bromodichloromethane (EPA 524.3)
Bromoform (EPA 524.3)
Chlorite (EPA 300.1)
Chloroacetic acid (EPA 552.3 Rev 1 (2003))
Chloroform (EPA 524.3)
Dibromoacetic acid (EPA 552.3 Rev 1 (2003))
Dibromochloromethane (EPA 524.3)
Dichloroacetic acid (EPA 552.3 Rev 1 (2003))
Total haloacetic acids (EPA 552.3 Rev 1 (2003))
Total trihalomethanes (THM) (EPA 524.3)
Trichloroacetic acid (EPA 552.3 Rev 1 (2003))

Pesticides, herbicides & PCBs (31)

1,2-Dibromoethane (EDB, Ethylene dibromide) (EPA 504.1_1.1_1995)
2,4-D (EPA 515.3_1_1996)
Alachlor (EPA 505_2.1_1995)
Aroclor-1016 (PCB-1016) (EPA 505_2.1_1995)
Aroclor-1221 (PCB-1221) (EPA 505_2.1_1995)
Aroclor-1232 (PCB-1232) (EPA 505_2.1_1995)
Aroclor-1242 (PCB-1242) (EPA 505_2.1_1995)
Aroclor-1248 (PCB-1248) (EPA 505_2.1_1995)
Aroclor-1254 (PCB-1254) (EPA 505_2.1_1995)
Aroclor-1260 (PCB-1260) (EPA 505_2.1_1995)
Atrazine (EPA 505_2.1_1995)
Carbofuran (Furaden) (EPA 531.2_1_2001)
Chlordane (tech.) (EPA 505_2.1_1995)
Dalapon (EPA 515.3_1_1996)
Dinoseb (2-sec-butyl-4,6-dinitrophenol, DNBP) (EPA 515.3_1_1996)
Dissolved organic carbon (DOC) (SM 5310 C 24th ED)
Endrin (EPA 505_2.1_1995)
Glyphosate (EPA 547_1990)
Heptachlor (EPA 505_2.1_1995)
Heptachlor epoxide (EPA 505_2.1_1995)
Hexachlorobenzene (EPA 505_2.1_1995)
Hexachlorocyclopentadiene (EPA 505_2.1_1995)
Methoxychlor (EPA 505_2.1_1995)
Oxamyl (EPA 531.2_1_2001)
Pentachlorophenol (EPA 515.3_1_1996)
Picloram (EPA 515.3_1_1996)
Silvex (2,4,5-TP) (EPA 515.3_1_1996)
Simazine (EPA 505_2.1_1995)
Total organic carbon (SM 5310 C 24th ED)
Toxaphene (Chlorinated camphene) (EPA 505_2.1_1995)
gamma-BHC (Lindane, gamma-Hexachlorocyclohexane) (EPA 505_2.1_1995)

Arsenic & other metals (21)

Aluminum (EPA 200.7_4.4_1994)
Antimony (EPA 200.7_4.4_1994)
Arsenic (EPA 200.7_4.4_1994)
Barium (EPA 200.7_4.4_1994)
Beryllium (EPA 200.7_4.4_1994)
Cadmium (EPA 200.7_4.4_1994)
Calcium (EPA 200.7_4.4_1994)
Calcium hardness as CaCO3 (SM 2340 B-2011)
Chromium (EPA 200.7_4.4_1994)
Cobalt (EPA 200.7_4.4_1994)
Iron (EPA 200.7_4.4_1994)
Magnesium (EPA 200.7_4.4_1994)
Manganese (EPA 200.7_4.4_1994)
Mercury (EPA 245.1_3_1994)
Nickel (EPA 200.7_4.4_1994)
Selenium (EPA 200.7_4.4_1994)
Silver (EPA 200.7_4.4_1994)
Sodium (EPA 200.7_4.4_1994)
Thallium (EPA 200.7_4.4_1994)
Vanadium (EPA 200.7_4.4_1994)
Zinc (EPA 200.7_4.4_1994)

Minerals & general chemistry (pH, hardness, fluoride, TDS) (26)

Alkalinity as CaCO3 (SM 2320 B 23rd ED (2011))
Biochemical oxygen demand (SM 5210 B-2016)
Bromide (EPA 300.1)
Carbonaceous BOD, CBOD (SM 5210 B-2016)
Chloride (EPA 300.1)
Color (EPA 110.2_1971)
Conductivity (SM 2510 B 22nd ED (2011))
Diesel range organics (DRO) (OK DEQ DRO)
Fluoride (EPA 300.1)
Gasoline range organics (GRO) (OK DEQ GRO)
Hardness (EPA 130.1)
Hardness (calc.) (SM 2340 B-2011)
Ignitability (EPA 1020B)
Methyl tert-butyl ether (MTBE) (OK DEQ GRO)
Naphthalene (OK DEQ GRO)
Orthophosphate as P (EPA 365.1_2_1993)
Oxygen, dissolved (SM 4500-O H-2016)
Phosphorus, total (EPA 365.3_1978)
Residue-filterable (TDS) (SM 2540 C 23rd ED (2015))
Residue-nonfilterable (TSS) (SM 2540 D)
Silica as SiO2 (EPA 200.7_4.4_1994)
Sulfate (EPA 300.1)
Total cyanide (EPA 335.4_1_1993)
Turbidity (SM 2130 B 23rd ED (2011))
UV 254 (SM 5910 B 23rd ED (2013))
pH (EPA 150.1)

Official analyte and method names from the Oklahoma DEQ accreditation search, Drinking Water matrix, checked 2026-11-02.

Listed as an accredited commercial lab by the Oklahoma Department of Environmental Quality (DEQ) Laboratory Accreditation Program (state lab ID OKDEQ). Listing checked 2026-10-31. Call the lab to confirm it's certified for the specific test you need before sending a sample.