DRINKING WATER ORGANIC POLLUTANTS
National Primary Drinking Water Regulations
http://www.epa.gov/safewater/mcl.html#mcls
Organic Chemicals
Contaminant MCLG1 (mg/L)2 MCL or TT1 (mg/L)2 Potential Health Effects from Ingestion of Water
Sources of Contaminant in Drinking Water
Acrylamide zero TT9 Nervous system or blood problems; increased risk of cancer
Added to water during sewage/wastewater treatment
Alachlor zero 0.002 Eye, liver, kidney or spleen problems; anemia; increased risk of cancer
Runoff from herbicide used on row crops
Atrazine 0.003 0.003 Cardiovascular system or reproductive problems
Runoff from herbicide used on row crops
Benzene zero 0.005 Anemia; decrease in blood platelets; increased risk of cancer
Discharge from factories; leaching from gas storage tanks and landfills
Benzo(a)pyrene (PAHs) zero 0.0002 Reproductive difficulties; increased risk of cancer
Leaching from linings of water storage tanks and distribution lines
Carbofuran 0.04 0.04 Problems with blood, nervous system, or reproductive system
Leaching of soil fumigant used on rice and alfalfa
Carbon tetrachloride zero 0.005 Liver problems; increased risk of cancer
Discharge from chemical plants and other industrial activities
Chlordane zero 0.002 Liver or nervous system problems; increased risk of cancer
Residue of banned termiticide
Chlorobenzene 0.1 0.1 Liver or kidney problems
Discharge from chemical and agricultural chemical factories
2,4-D 0.07 0.07 Kidney, liver, or adrenal gland problems
Runoff from herbicide used on row crops
Dalapon 0.2 0.2 Minor kidney changes
Runoff from herbicide used on rights of way
1,2-Dibromo-3-chloropropane (DBCP) zero 0.0002 Reproductive difficulties; increased risk of cancer
Runoff/leaching from soil fumigant used on soybeans, cotton, pineapples, and orchards
o-Dichlorobenzene 0.6 0.6 Liver, kidney, or circulatory system problems
Discharge from industrial chemical factories
p-Dichlorobenzene 0.075 0.075 Anemia; liver, kidney or spleen damage; changes in blood
Discharge from industrial chemical factories
1,2-Dichloroethane zero 0.005 Increased risk of cancer
Discharge from industrial chemical factories
1,1-Dichloroethylene 0.007 0.007 Liver problems
Discharge from industrial chemical factories
cis-1,2-Dichloroethylene 0.07 0.07 Liver problems
Discharge from industrial chemical factories
trans-1,2-Dichloroethylene 0.1 0.1 Liver problems
Discharge from industrial chemical factories
Dichloromethane zero 0.005 Liver problems; increased risk of cancer
Discharge from drug and chemical factories
1,2-Dichloropropane zero 0.005 Increased risk of cancer
Discharge from industrial chemical factories
Di(2-ethylhexyl) adipate 0.4 0.4 Weight loss, liver problems, or possible reproductive difficulties.
Discharge from chemical factories
Di(2-ethylhexyl) phthalate zero 0.006 Reproductive difficulties; liver problems; increased risk of cancer
Discharge from rubber and chemical factories
Dinoseb 0.007 0.007 Reproductive difficulties
Runoff from herbicide used on soybeans and vegetables
Dioxin (2,3,7,8-TCDD) zero 0.00000003 Reproductive difficulties; increased risk of cancer
Emissions from waste incineration and other combustion; discharge from chemical factories
Diquat 0.02 0.02 Cataracts
Runoff from herbicide use
Endothall 0.1 0.1 Stomach and intestinal problems
Runoff from herbicide use
Endrin 0.002 0.002 Liver problems
Residue of banned insecticide
Epichlorohydrin zero T9 Increased cancer risk, and over a long period of time, stomach problems
Discharge from industrial chemical factories; an impurity of some water treatment chemicals
Ethylbenzene 0.7 0.7 Liver or kidneys problems
Discharge from petroleum refineries
Ethylene dibromide zero 0.00005 Problems with liver, stomach, reproductive system, or kidneys;
increased risk of cancer
Discharge from petroleum refineries
Glyphosate 0.7 0.7 Kidney problems; reproductive difficulties
Runoff from herbicide use
Heptachlor zero 0.0004 Liver damage; increased risk of cancer
Residue of banned termiticide
Heptachlor epoxide zero 0.0002 Liver damage; increased risk of cancer
Breakdown of heptachlor
Hexachlorobenzene zero 0.001 Liver or kidney problems; reproductive difficulties; increased risk of cancer
Discharge from metal refineries and agricultural chemical factories
Hexachlorocyclopentadiene 0.05 0.05 Kidney or stomach problems
Discharge from chemical factories
Lindane 0.0002 0.0002 Liver or kidney problems
Runoff/leaching from insecticide used on cattle, lumber, gardens
Methoxychlor 0.04 0.04 Reproductive difficulties
Runoff/leaching from insecticide used on fruits, vegetables, alfalfa, livestock
Oxamyl (Vydate) 0.2 0.2 Slight nervous system effects
Runoff/leaching from insecticide used on apples, potatoes, and tomatoes
Polychlorinated biphenyls (PCBs) zero 0.0005 Skin changes; thymus gland problems; immune
deficiencies; reproductive or nervous system
difficulties; increased risk of cancer
Runoff from landfills; discharge of waste chemicals
Pentachlorophenol zero 0.001 Liver or kidney problems; increased cancer risk
Discharge from wood preserving factories
Picloram 0.5 0.5 Liver problems
Herbicide runoff
Simazine 0.004 0.004 Problems with blood
Herbicide runoff
Styrene 0.1 0.1 Liver, kidney, or circulatory system problems
Discharge from rubber and plastic factories; leaching from landfills
Tetrachloroethylene zero 0.005 Liver problems; increased risk of cancer
Discharge from factories and dry cleaners
Toluene 1 1 Nervous system, kidney, or liver problems
Discharge from petroleum factories
Toxaphene zero 0.003 Kidney, liver, or thyroid problems; increased risk of cancer
Runoff/leaching from insecticide used on cotton and cattle
2,4,5-TP (Silvex) 0.05 0.05 Liver problems
Residue of banned herbicide
1,2,4-Trichlorobenzene 0.07 0.07 Changes in adrenal glands
Discharge from textile finishing factories
1,1,1-Trichloroethane 0.20 0.2 Liver, nervous system, or circulatory problems
Discharge from metal degreasing sites and other factories
1,1,2-Trichloroethane 0.003 0.005 Liver, kidney, or immune system problems
Discharge from industrial chemical factories
Trichloroethylene zero 0.005 Liver problems; increased risk of cancer
Discharge from metal degreasing sites and other factories
Vinyl chloride zero 0.002 Increased risk of cancer
Leaching from PVC pipes; discharge from plastic factories
Xylenes (total) 10 10 Nervous system damage
Discharge from petroleum factories; discharge from chemical factories