Acrylamide |
TT4 |
Nervous system or blood problems, increased risk of cancer |
Added to water during sewage/wastewater treatment |
zero |
Alachlor |
0.002 |
Eye, liver, kidney, or spleen problems; anemia; increased risk of cancer |
Runoff from herbicide used on row crops |
zero |
Atrazine |
0.003 |
Cardiovascular system or reproductive problems |
Runoff from herbicide used on row crops |
0.003 |
Benzene |
0.005 |
Anemia; decrease in blood platelets; increased risk of cancer |
Discharge from factories; leaching from gas storage tanks and landfills |
zero |
Benzo(a)pyrene (PAHs) |
0.0002 |
Reproductive difficulties; increased risk of cancer |
Leaching from linings of water storage tanks and distribution lines |
zero |
Carbofuran |
0.04 |
Problems with blood, nervous system, or reproductive system |
Leaching of soil fumigant used on rice and alfalfa |
0.04 |
Carbofuran |
0.04 |
Problems with blood, nervous system, or reproductive system |
Leaching of soil fumigant used on rice and alfalfa |
0.04 |
Carbon tetrachloride |
0.005 |
Liver problems; increased risk of cancer |
Discharge from chemical plants and other industrial activities |
zero |
Chlordane |
0.002 |
Liver or nervous system problems; increased risk of cancer |
Residue of banned termiticide |
zero |
Chlorobenzene |
0.1 |
Liver or kidney problems |
Discharge from chemical and agricultural chemical factories |
0.1 |
2,4-D |
0.07 |
Kidney, liver, or adrenal gland problems |
Runoff from herbicide used on row crops |
0.07 |
Dalapon |
0.2 |
Minor kidney changes |
Runoff from herbicide used on rights of way |
0.2 |
1,2-Dibromo-3-chloropropane (DBCP) |
0.0002 |
Reproductive difficulties; increased risk of cancer |
Runoff/leaching from soil fumigant used on soybeans, cotton, pineapples, and orchards |
zero |
o-Dichlorobenzene |
0.6 |
Liver, kidney, or circulatory system problems |
Discharge from industrial chemical factories |
0.6 |
p-Dichlorobenzene |
0.075 |
Anemia; liver, kidney, or spleen damage; changes in blood |
Discharge from industrial chemical factories |
.0.75 |
1.2-Dichloroethane |
0.005 |
Increased risk of cancer |
Discharge from industrial chemical factories |
zero |
1,1-Dichloroethylene |
0.007 |
Liver problems |
Discharge from industrial chemical factories |
0.007 |
cis-1,2-Dichloroethylene |
0.07 |
Liver problems |
Discharge from industrial chemical factories |
0.07 |
trans-1,2,Dichloroethylene |
0.1 |
Liver problems |
Discharge from industrial chemical factories |
0.1 |
Dichloromethane |
0.005 |
Liver problems; increased risk of cancer |
Discharge from industrial chemical factories |
zero |
1,2-Dichloropropane |
0.005 |
Increased risk of cancer |
Discharge from industrial chemical factories |
zero |
Di(2-ethylhexyl) adipate |
0.4 |
Weight loss, liver problems, or possible reproductive difficulties |
Discharge from chemical factories |
0.4 |
Di(2-ethylhexyl) phthalate |
0.006 |
Reproductive difficulties; liver problems; increased risk of cancer |
Discharge from rubber and chemical factories |
zero |
Dinoseb |
0.007 |
Reproductive difficulties |
Runoff from herbicide used on soybeans and vegetables |
0.007 |
Dioxin (2,3,7,8-TCDD) |
0.00000003 |
Reproductive difficulties; increased risk of cancer |
Emissions from waste incineration and other combustion; discharge from chemical factories |
zero |
Diquat |
0.02 |
Cataracts |
Runoff from herbicide use |
0.02 |
Endothall |
0.1 |
Stomach and intestinal problems |
Runoff from herbicide use |
0.1 |
Endrin |
0.002 |
Liver problems |
Residue of banned insecticide |
0.002 |
Epichlorohydrin |
TT4 |
Increased cancer risk; stomach problems |
Discharge from industrial chemical factories; an impurity of some water treatment chemicals |
zero |
Ethylbenzene |
0.7 |
Liver or kidney problems |
Discharge from petroleum refineries |
0.7 |
Ethylene dibromide |
0.00005 |
Problems with liver, stomach, reproductive system, or kidneys; increased risk of cancer |
Discharge from petroleum refineries |
zero |
Giardia lamblia |
TT7 |
Short-term exposure; Gastrointestinal illness (e.g., diarrhea, vomiting, cramps) |
Human and animal fecal waste |
zero |
Heptachlor |
0.0004 |
Liver damage; increased risk of cancer |
Residue of banned termiticide |
zero |
Heptachlor epoxide |
0.0002 |
Liver damage; increased risk of cancer |
Breakdown of heptachlor |
zero |
Hexachlorobenzene |
0.001 |
Liver or kidney problems; reproductive difficulties; increased risk of cancer |
Discharge from metal refineries and agricultural chemical factories |
zero |
Hexachloro-cyclopentadiene |
0.05 |
Kidney or stomach problems |
Discharge from chemical factories |
0.05 |
Lindane |
0.0002 |
Kidney damage |
Runoff/leaching from insecticide used on cattle, lumber, and gardens |
0.0002 |
Methoxychlor |
0.04 |
Reproductive difficulties |
Runoff/leaching from insecticide used on fruits, vegetables, alfalfa, and livestock |
0.04 |
Oxamyl (Vydate) |
0.2 |
Slight nervous system effects |
Runoff/leaching from insecticide used on apples, potatoes, and tomatoes |
0.2 |
Pentachlorophenol |
0.001 |
Liver or kidney problems; increased cancer risk |
Discharge from wood-preserving factories |
zero |
Picloram |
0.5 |
Liver problems |
Herbicide runoff |
0.5 |
Polychlorinated biphenyls (PCBs) |
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 |
zero |
Simazine |
0.004 |
Problems with blood |
Herbicide runoff |
0.004 |
Styrene |
0.1 |
Liver, kidney, or circulatory system problems |
Discharge from rubber and plastic factories; leaching from landfills |
0.1 |
Tetrachloroethylene |
0.005 |
Liver problems, increased risk of cancer |
Discharge from factories and dry cleaners |
zero |
Toluene |
1 |
Nervous system, kidney, or liver problems |
Discharge from petroleum factories |
1 |
Toxaphene |
0.003 |
Kidney, liver, or thyroid problems; increased risk of cancer |
Runoff/leaching from insecticide used on cotton and cattle |
zero |
2,4,5-TP (Silvex) |
0.05 |
Liver problems |
Residue of banned herbicide |
0.05 |
1,2,4-Trichlorobenzene |
0.07 |
Changes in adrenal glands |
Discharge from textile finishing factories |
0.07 |
1,1,1-Trichloroethane |
0.2 |
Liver, nervous system, or circulatory problems |
Discharge from metal degreasing sites and other factories |
0.2 |
1,1,2-Trichloroethane |
0.005 |
Liver, kidney, or immune system problems |
Discharge from industrial chemical factories |
0.003 |
Trichloroethylene |
0.005 |
Liver problems; increased risk of cancer |
Discharge from metal degreasing sites and other factories |
zero |
Vinyl chloride |
0.002 |
Increased risk of cancer |
Leaching from PVC pipes; discharge from plastic factories |
zero |
Xylenes (total) |
10 |
Nervous system damage |
Discharge from petroleum factories; discharge from chemical factories |
10 |