40 C.F.R. Tables to Part 132

40 C.F.R. Tables to Part 132

Last amended: 2016Year: 2026Length: 1,059 wordsOfficial source

Cite as 40 C.F.R. Tables to Part 132 (2026)

Table 1—Acute Water Quality Criteria for Protection of Aquatic Life in Ambient Water EPA recommends that metals criteria be expressed as dissolved concentrations (see appendix A, I.A.4 for more information regarding metals criteria). (a) Chemical CMC (µg/L) Conversion factor (CF) Arsenic (III) a b 339.8 1.000 Chromium (VI) a b 16.02 0.982 Cyanide c 22 n/a Dieldrin d 0.24 n/a Endrin d 0.086 n/a Lindane d 0.95 n/a Mercury (II) a b 1.694 0.85 Parathion d 0.065 n/a a CMC = CMC tr . b CMC d = (CMC tr ) CF. The CMC d shall be rounded to two significant digits. c CMC should be considered free cyanide as CN. d CMC = CMC t . Notes: The term “n/a” means not applicable. CMC is Criterion Maximum Concentration. CMC tr is the CMC expressed as total recoverable. CMC d is the CMC expressed as a dissolved concentration. CMC t is the CMC expressed as a total concentration. (b) Chemical m A b A Conversion factor (CF) Cadmium a b 1.128 −3.6867 0.85 Chromium (III) a b 0.819 + 3.7256 0.316 Copper a b 0.9422 −1.700 0.960 Nickel a b 0.846 + 2.255 0.998 Pentachlorophenol c 1.005 −4.869 n/a Zinc a b 0.8473 + 0.884 0.978 a CMC tr = exp {m A [ln (hardness)] + b A }. b CMC d = (CMC tr ) CF. The CMC d shall be rounded to two significant digits. c CMC t = exp m A {[pH] + b A }. The CMC t shall be rounded to two significant digits. Notes: The term “exp” represents the base e exponential function. The term “n/a” means not applicable. CMC is Criterion Maximum Concentration. CMC tr is the CMC expressed as total recoverable. CMC d is the CMC expressed as a dissolved concentration. CMC t is the CMC expressed as a total concentration. [60 FR 15387, Mar. 23, 1995, as amended at 65 FR 35286, June 2, 2000] Table 2—Chronic Water Quality Criteria for Protection of Aquatic Life in Ambient Water EPA recommends that metals criteria be expressed as dissolved concentrations (see appendix A, I.A.4 for more information regarding metals criteria). (a) Chemical CCC (µg/L) Conversion factor (CF) Arsenic (III) a b 147.9 1.000 Chromium (VI) a b 10.98 0.962 Cyanide c 5.2 n/a Dieldrin d 0.056 n/a Endrin d 0.036 n/a Mercury (II) a b 0.9081 0.85 Parathion d 0.013 n/a Selenium a b 5 0.922 a CCC = CCC tr . b CCC d = (CCC tr ) CF. The CCC d shall be rounded to two significant digits. c CCC should be considered free cyanide as CN. d CCC = CCC t . Notes: The term “n/a” means not applicable. CCC is Criterion Continuous Concentration. CCC tr is the CCC expressed as total recoverable. CCC d is the CCC expressed as a dissolved concentration. CCC t is the CCC expressed as a total concentration. (b) Chemical m c b c Conversion factor (CF) Cadmium a b 0.7852 −2.715 0.850 Chromium (III) a b 0.819 + 0.6848 0.860 Copper a b 0.8545 −1.702 0.960 Nickel a b 0.846 + 0.0584 0.997 Pentachlorophenol c 1.005 −5.134 n/a Zinc a b 0.8473 + 0.884 0.986 a CCC tr = exp {m c [ln (hardness)] + b c }. b CCC d = (CCC tr ) (CF). The CCC d shall be rounded to two significant digits. c CMC t = exp {m A [pH] + b A }. The CMC t shall be rounded to two significant digits. Notes: The term “exp” represents the base e exponential function. The term “n/a” means not applicable. CCC is Criterion Continuous Concentration. CCC tr is the CCC expressed as total recoverable. CCC d is the CCC expressed as a dissolved concentration. CCC t is the CCC expressed as a total concentration. Table 3—Water Quality Criteria for Protection of Human Health Chemical HNV (µg/L) HCV (µg/L) Drinking Nondrinking Drinking Nondrinking Benzene 1.9E1 5.1E2 1.2E1 3.1E2 Chlordane 1.4E-3 1.4E-3 2.5E-4 2.5E-4 Chlorobenzene 4.7E2 3.2E3 Cyanides 6.0E2 4.8E4 DDT 2.0E-3 2.0E-3 1.5E-4 1.5E-4 Dieldrin 4.1E-4 4.1E-4 6.5E-6 6.5E-6 2,4-Dimethylphenol 4.5E2 8.7E3 2,4-Dinitrophenol 5.5E1 2.8E3 Hexachlorobenzene 4.6E-2 4.6E-2 4.5E-4 4.5E-4 Hexachloroethane 6.0 7.6 5.3 6.7 Lindane 4.7E-1 5.0E-1 Mercury 1 1.8E-3 1.8E-3 Methylene chloride 1.6E3 9.0E4 4.7E1 2.6E3 2,3,7,8-TCDD 6.7E-8 6.7E-8 8.6E-9 8.6E-9 Toluene 5.6E3 5.1E4 Toxaphene 6.8E-5 6.8E-5 Trichloroethylene 2.9E1 3.7E2 1 Includes methylmercury. [60 FR 15387, Mar. 23, 1995, as amended at 62 FR 11731, Mar. 12, 1997; 62 FR 52924, Oct. 9, 1997] Table 4—Water Quality Criteria for Protection of Wildlife Chemical Criteria (µg/L) DDT and metabolites 1.1E-5 Mercury (including methylmercury) 1.3E-3 PCBs (class) 1.2E-4 2,3,7,8-TCDD 3.1E-9 [60 FR 15387, Mar. 23, 1995, as amended at 62 FR 11731, Mar. 12, 1997] Table 5—Pollutants Subject to Federal, State, and Tribal Requirements Alkalinity Ammonia Bacteria Biochemical oxygen demand (BOD) Chlorine Color Dissolved oxygen Dissolved solids pH Phosphorus Salinity Temperature Total and suspended solids Turbidity Table 6—Pollutants of Initial Focus in the Great Lakes Water Quality Initiative A. Pollutants that are bioaccumulative chemicals of concern (BCCs): Chlordane 4,4′-DDD; p,p′-DDD; 4,4′-TDE; p,p′-TDE 4,4′-DDE; p,p′-DDE 4,4′-DDT; p,p′-DDT Dieldrin Hexachlorobenzene Hexachlorobutadiene; hexachloro-1, 3-butadiene Hexachlorocyclohexanes; BHCs alpha-Hexachlorocyclohexane; alpha-BHC beta-Hexachlorocyclohexane; beta-BHC delta-Hexachlorocyclohexane; delta-BHC Lindane; gamma-hexachlorocyclohexane; gamma-BHC Mercury Mirex Octachlorostyrene PCBs; polychlorinated biphenyls Pentachlorobenzene Photomirex 2,3,7,8-TCDD; dioxin 1,2,3,4-Tetrachlorobenzene 1,2,4,5-Tetrachlorobenzene Toxaphene B. Pollutants that are not bioaccumulative chemicals of concern: Acenaphthene Acenaphthylene Acrolein; 2-propenal Acrylonitrile Aldrin Aluminum Anthracene Antimony Arsenic Asbestos 1,2-Benzanthracene; benz[a]anthracene Benzene Benzidine Benzo[a]pyrene; 3,4-benzopyrene 3,4-Benzofluoranthene; benzo[b]fluoranthene 11,12-Benzofluoranthene; benzo[k]fluoranthene 1,12-Benzoperylene; benzo[ghi]perylene Beryllium Bis(2-chloroethoxy) methane Bis(2-chloroethyl) ether Bis(2-chloroisopropyl) ether Bromoform; tribomomethane 4-Bromophenyl phenyl ether Butyl benzyl phthalate Cadmium Carbon tetrachloride; tetrachloromethane Chlorobenzene p-Chloro-m-cresol; 4-chloro-3-methylphenol Chlorodibromomethane Chlorethane 2-Chloroethyl vinyl ether Chloroform; trichloromethane 2-Chloronaphthalene 2-Chlorophenol 4-Chlorophenyl phenyl ether Chlorpyrifos Chromium Chrysene Copper Cyanide 2,4-D; 2,4-Dichlorophenoxyacetic acid DEHP; di(2-ethylhexyl) phthalate Diazinon 1,2:5,6-Dibenzanthracene; dibenz[a,h]anthracene Dibutyl phthalate; di-n-butyl phthalate 1,2-Dichlorobenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene 3,3′-Dichlorobenzidine Dichlorobromomethane; bromodichloromethane 1,1-Dichloroethane 1,2-Dichloroethane 1,1-Dichloroethylene; vinylidene chloride 1,2-trans-Dichloroethylene 2,4-Dichlorophenol 1,2-Dichloropropane 1,3-Dichloropropene; 1,3-dichloropropylene Diethyl phthalate 2,4-Dimethylphenol; 2,4-xylenol Dimethyl phthalate 4,6-Dinitro-o-cresol; 2-methyl-4,6-dinitrophenol 2,4-Dinitrophenol 2,4-Dinitrotoluene 2,6-Dinitrotoluene Dioctyl phthalate; di-n-octyl phthalate 1,2-Diphenylhydrazine Endosulfan; thiodan alpha-Endosulfan beta-Endosulfan Endosulfan sulfate Endrin Endrin aldehyde Ethylbenzene Fluoranthene Fluorene; 9H-fluorene Fluoride Guthion Heptachlor Heptachlor epoxide Hexachlorocyclopentadiene Hexachloroethane Indeno[1,2,3-cd]pyrene; 2,3-o-phenylene pyrene Isophorone Lead Malathion Methoxychlor Methyl bromide; bromomethane Methyl chloride; chloromethane Methylene chloride; dichloromethane Napthalene Nickel Nitrobenzene 2-Nitrophenol 4-Nitrophenol N-Nitrosodimethylamine N-Nitrosodiphenylamine N-Nitrosodipropylamine; N-nitrosodi-n-propylamine Parathion Pentachlorophenol Phenanthrene Phenol Iron Pyrene Selenium Silver 1,1,2,2-Tetrachloroethane Tetrachloroethylene Thallium Toluene; methylbenzene 1,2,4-Trichlorobenzene 1,1,1-Trichloroethane 1,1,2-Trichloroethane Trichloroethylene; trichloroethene 2,4,6-Trichlorophenol Vinyl chloride; chloroethylene; chloroethene Zinc