Water: CWA Methods
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Priority Pollutants
Priority pollutants are a set of chemical pollutants we regulate, and for which we have developed analytical test methods. The current list of 126 Priority Pollutants, shown below, can also be found in Appendix A to 40 CFR Part 423.
- Acenaphthene
- Acrolein
- Acrylonitrile
- Benzene
- Benzidine
- Carbon tetrachloride
- Chlorobenzene
- 1,2,4-trichlorobenzene
- Hexachlorobenzene
- 1,2-dichloroethane
- 1,1,1-trichloreothane
- Hexachloroethane
- 1,1-dichloroethane
- 1,1,2-trichloroethane
- 1,1,2,2-tetrachloroethane
- Chloroethane
- REMOVED
- Bis(2-chloroethyl) ether
- 2-chloroethyl vinyl ethers
- 2-chloronaphthalene
- 2,4,6-trichlorophenol
- Parachlorometa cresol
- Chloroform
- 2-chlorophenol
- 1,2-dichlorobenzene
- 1,3-dichlorobenzene
- 1,4-dichlorobenzene
- 3,3-dichlorobenzidine
- 1,1-dichloroethylene
- 1,2-trans-dichloroethylene
- 2,4-dichlorophenol
- 1,2-dichloropropane
- 1,2-dichloropropylene
- 2,4-dimethylphenol
- 2,4-dinitrotoluene
- 2,6-dinitrotoluene
- 1,2-diphenylhydrazine
- Ethylbenzene
- Fluoranthene
- 4-chlorophenyl phenyl ether
- 4-bromophenyl phenyl ether
- Bis(2-chloroisopropyl) ether
- Bis(2-chloroethoxy) methane
- Methylene chloride
- Methyl chloride
- Methyl bromide
- Bromoform
- Dichlorobromomethane
- REMOVED
- REMOVED
- Chlorodibromomethane
- Hexachlorobutadiene
- Hexachlorocyclopentadiene
- Isophorone
- Naphthalene
- Nitrobenzene
- 2-nitrophenol
- 4-nitrophenol
- 2,4-dinitrophenol
- 4,6-dinitro-o-cresol
- N-nitrosodimethylamine
- N-nitrosodiphenylamine
- N-nitrosodi-n-propylamine
- Pentachlorophenol
- Phenol
- Bis(2-ethylhexyl) phthalate
- Butyl benzyl phthalate
- Di-N-Butyl Phthalate
- Di-n-octyl phthalate
- Diethyl Phthalate
- Dimethyl phthalate
- benzo(a) anthracene
- Benzo(a)pyrene
- Benzo(b) fluoranthene
- Benzo(k) fluoranthene
- Chrysene
- Acenaphthylene
- Anthracene
- Benzo(ghi) perylene
- Fluorene
- Phenanthrene
- Dibenzo(,h) anthracene
- Indeno (1,2,3-cd) pyrene
- Pyrene
- Tetrachloroethylene
- Toluene
- Trichloroethylene
- Vinyl chloride
- Aldrin
- Dieldrin
- Chlordane
- 4,4-DDT
- 4,4-DDE
- 4,4-DDD
- Alpha-endosulfan
- Beta-endosulfan
- Endosulfan sulfate
- Endrin
- Endrin aldehyde
- Heptachlor
- Heptachlor epoxide
- Alpha-BHC
- Beta-BHC
- Gamma-BHC
- Delta-BHC
- PCB–1242 (Arochlor 1242)
- PCB–1254 (Arochlor 1254)
- PCB–1221 (Arochlor 1221)
- PCB–1232 (Arochlor 1232)
- PCB–1248 (Arochlor 1248)
- PCB–1260 (Arochlor 1260)
- PCB–1016 (Arochlor 1016)
- Toxaphene
- Antimony
- Arsenic
- Asbestos
- Beryllium
- Cadmium
- Chromium
- Copper
- Cyanide, Total
- Lead
- Mercury
- Nickel
- Selenium
- Silver
- Thallium
- Zinc
- 2,3,7,8-TCDD