| Toxin | Source | Potential Damage to Pets |
 |
| 2,4-D | Herbicide | Kidney, Liver, Nervous System |
 |
| Alachlor | Herbicide | Cancer, Kidney, Liver, Spleen, Nose, Eyes |
 |
| Asbestos | Many, Concrete Pipes | Cancers, Lung |
 |
| Atrazine | Herbicide | Congestion Ð Heart, Lungs, Kidneys, Adrenal Glands |
 |
| Benzene | Synthetic Hydrocarbons | Cancer, Chromosome Aberrations |
 |
| Cadmium | Corroded Galvanized Pipes | Kidney, Liver, Bone, Blood Damage and Failure |
 |
| Carbofuran | Insecticide | Nervous System, Reproductive System |
 |
| Carbon Tetrachloride | Aerosols, refrigerant | Kidney, Liver, Nervous System Cancers |
 |
| Chlordane | Insecticide | Liver, Kidney, Heart, Lungs, Spleen, Adrenal Glands |
 |
| Chlorine | Water Treatment | Stomach, Kidney, Bladder Damage |
 |
| Chlorobezene | Plastic Solvent | Nervous System, Liver, Kidney |
 |
| Copper | Corroded Piping | Anemia |
 |
| Cryptosporidium | Chlorine-resistant Parasite | Diarrhea, Cramping |
 |
| Cysts | Chlorine-resistant capsules | Diarrhea, Cramping, Anemia |
 |
| Endrin | Insecticide | Convulsions, Liver damage |
 |
| Ethylbenzene | Plastic Solvent | Kidney, Liver, Nervous System Damage |
 |
| Giardia | Chlorine-resistant Parasite | Diarrhea, Cramping |
 |
| Heptachlor Epoxide | Pesticide chlordane | Liver, Central Nervous System damage |
 |
| Lead | Corroded Piping | Cancer, Kidney Damage, Stroke |
 |
| Lindane | Insecticide | Liver, Kidney Damage |
 |
| Mercury | Corroded Piping | Kidney Damage |
 |
| Methoxychlor | Insecticide | Nervous System, Liver, Kidney, Heart Damage |
 |
| Ortho-Dichlorobenzene | Herbicides | Nervous System, Liver, Kidney, Blood Cell Damage |
 |
| Simazine | Herbicide | Cancer, Kidney, Liver, Nervous System Damage |
 |
| Tetrachloroethylene | Dry-Cleaning Fluid | Liver, Kidney, Central Nervous System Damage |
 |
| Toluene | Petroleum, Paint, Solvent | Liver, Kidney, Central Nervous System Damage |
 |
| Toxaphene | Insecticide | Cancer, Immune System Depression, Liver, Kidney Degeneration, Convulsions |
 |
| Trichloroethylene | Solvent | Cancer, Liver Damage |
 |
| Xylenes | Solvent, Gasoline | Liver, Kidney, Central Nervous System |