40 CFR 401.15 - Toxic pollutants.

Regulations last checked for updates: Mar 13, 2025

Title 40 - Protection of Environment last revised: Nov 13, 2025

View all text of Part 401 [§ 401.10 - § 401.17]

§ 401.15 - Toxic pollutants.

The following comprise the list of toxic pollutants designated pursuant to section 307(a)(1) of the Act:

1. Acenaphthene

2. Acrolein

3. Acrylonitrile

4. Aldrin/Dieldrin 1

1 Effluent standard promulgated (40 CFR part 129).

5. Antimony and compounds 2

2 The term compounds shall include organic and inorganic compounds.

6. Arsenic and compounds

7. Asbestos

8. Benzene

9. Benzidine 1

10. Beryllium and compounds

11. Cadmium and compounds

12. Carbon tetrachloride

13. Chlordane (technical mixture and metabolites)

14. Chlorinated benzenes (other than di-chlorobenzenes)

15. Chlorinated ethanes (including 1,2-di-chloroethane, 1,1,1-trichloroethane, and hexachloroethane)

16. Chloroalkyl ethers (chloroethyl and mixed ethers)

17. Chlorinated naphthalene

18. Chlorinated phenols (other than those listed elsewhere; includes trichlorophenols and chlorinated cresols)

19. Chloroform

20. 2-chlorophenol

21. Chromium and compounds

22. Copper and compounds

23. Cyanides

24. DDT and metabolites 1

25. Dichlorobenzenes (1,2-, 1,3-, and 1,4-di-chlorobenzenes)

26. Dichlorobenzidine

27. Dichloroethylenes (1,1-, and 1,2-dichloroethylene)

28. 2,4-dichlorophenol

29. Dichloropropane and dichloropropene

30. 2,4-dimethylphenol

31. Dinitrotoluene

32. Diphenylhydrazine

33. Endosulfan and metabolites

34. Endrin and metabolites 1

35. Ethylbenzene

36. Fluoranthene

37. Haloethers (other than those listed elsewhere; includes chlorophenylphenyl ethers, bromophenylphenyl ether, bis(dichloroisopropyl) ether, bis-(chloroethoxy) methane and polychlorinated diphenyl ethers)

38. Halomethanes (other than those listed elsewhere; includes methylene chloride, methylchloride, methylbromide, bromoform, dichlorobromomethane

39. Heptachlor and metabolites

40. Hexachlorobutadiene

41. Hexachlorocyclohexane

42. Hexachlorocyclopentadiene

43. Isophorone

44. Lead and compounds

45. Mercury and compounds

46. Naphthalene

47. Nickel and compounds

48. Nitrobenzene

49. Nitrophenols (including 2,4-dinitrophenol, dinitrocresol)

50. Nitrosamines

51. Pentachlorophenol

52. Phenol

53. Phthalate esters

54. Polychlorinated biphenyls (PCBs) 1

55. Polynuclear aromatic hydrocarbons (including benzanthracenes, benzopyrenes, benzofluoranthene, chrysenes, dibenz-anthracenes, and indenopyrenes)

56. Selenium and compounds

57. Silver and compounds

58. 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD)

59. Tetrachloroethylene

60. Thallium and compounds

61. Toluene

62. Toxaphene 1

63. Trichloroethylene

64. Vinyl chloride

65. Zinc and compounds

[44 FR 44502, July 30, 1979, as amended at 46 FR 2266, Jan. 8, 1981; 46 FR 10724, Feb. 4, 1981]

authority: 33 U.S.C. 1251

source: 39 FR 4532, Feb. 1, 1974, unless otherwise noted.

cite as: 40 CFR 401.15