Benzene
MCL	0.005 mg/l
Risks or effects	Leukemia and possibly other cancers; Nerve, lung and kidney damage; Blood disorders; Reproductive effects
Sources	Leaking underground fuel storage tanks; Accidental releases or spills Industrial waste; Manufacture of pesticides, detergents and solvents ; Accidental releases or spills
Treatment	Activated Carbon

Carbon Tetrachloride
MCL	0.005 mg/l
Risks or effects	Cancer; Central nervous system depression; Liver and kidney damage
Sources	Cleaning agents; Aerosol sprays; Coolants; Solvent; Landfills Chemical disposal sites; Landfills
Treatment	Activated Carbon

Cis-1,2-Dichloroethylene
MCL	0.07 mg/l
Risks or effects	Nervous system, liver, kidney, circulatory
Sources	Waste industrial extraction solvents
Treatment	Activated Carbon; Aeration

1,2-Dichloroethane
MCL	0.005 mg/l
Risks or effects	Damage to kidneys and liver, can cause nausea
Sources	Leaded gas, Fumigants and paints Leaded gas, Fumigants and paints
Treatment	Activated Carbon ; Aeration

1,1-Dichloroethylene
MCL	0.007 mg/l
Risks or effects	Cancer, liver and kidney effects
Sources	Plastics, dyes, perfumes, paints
Treatment	Aeration, Granulated Activated Carbon

Dichloromethane
MCL	0.005 mg/l
Risks or effects	Cancer
Sources	Paint stripper; Metal degreases; Propellant; Extraction
Treatment	Granulated Activated Carbon

1,2-Dichloropropane
MCL	0.005mg/l
Risks or effects	Liver, lungs, and kidney effects
Sources	Soil fumigant Waste industrial solvents
Treatment	Activated Carbon ; Aeration

Ethylbenzene
MCL	0.7 mg/l
Risks or effects	Liver, kidney and nervous system
Sources	Insecticide, Gasoline chemical manufacturing wastes
Treatment	Activated Carbon

Monochlorobenzene
MCL	0.1 mg/l
Risks or effects	Nervous system, liver and kidney
Sources	Pesticide Solvent
Treatment	Activated Carbon ; Aeration

O-Dichlorobenzene
MCL	0.6 mg/l
Risks or effects	Liver, kidney and lungs
Sources	Paints, engine cleaning compouns, dyes, chemical water
Treatment	Activated Carbon ; Aeration

O-, M-, P-Xylenes
MCL	10 mg/l
Risks or effects	Liver, kidney, nervous system
Sources	Paints, inks, detergents By-product of gasoline refining
Treatment	Activated Carbon ; Aeration

Para-Dichlorobenzene
MCL	0.075 mg/l
Risks or effects	Probable cause of cancer
Sources	Room and water deodorants and mothballs
Treatment	Activated Carbon

Styrene
MCL	0.1 mg/l
Risks or effects	Liver damage
Sources	Manufacture of plastics, synthetic rubbers, resins insulators
Treatment	Activated Carbon

Trans-1,2-Dichloroethylene
MCL	0.1 mg/l
Risks or effects	Liver, kidney, nervous, circulatory
Sources	Waste industrial extraction solvents
Treatment	Activated Carbon ; Aeration

Tetrachloroethylene
MCL	0.005 mg/l
Risks or effects	Probable cause of cancer
Sources	Improper disposal of dry cleaning and other solvents
Treatment	Activated Carbon ; Aeration

Toluene
MCL	1 mg/l
Risks or effects	Liver, kidney, nervous, circulatory
Sources	Gasoline additive; Manufacturing and solvent operations
Treatment	Activated Carbon ; Aeration

1,2,4-Trichlorobenzene
MCL	0.009 mg/l
Risks or effects	Liver, kidney damage
Sources	Herbicide Herbicide production; Dye carrier
Treatment	Activated Carbon

1,1,1-Trichloroethane
MCL	0.2 mg/l
Risks or effects	Nervous system, probable cause of cancer
Sources	Adhesives, aerosols, textiles, paints, inks, metal degreasers
Treatment	Activated Carbon

1,1,2-Trichloroethane
MCL	0.005 mg/l
Risks or effects	Kidney, liver, nervous system
Sources	Solvent in rubber, other organic products; Chemical production wastes
Treatment	Activated Carbon

Trichloroethylene
MCL	0.005 mg/l
Risks or effects	Probable cause of cancer
Sources	Textiles, adhesives and metal degreasers
Treatment	Activated Carbon ; Aeration

Vinyl Chloride
MCL	0.002 mg/l
Risks or effects	Cancer
Sources	May leach from PVC pipes; Formed by solvent breakdown
Treatment	Activated Carbon