Pesticides are safe and effective, used routinely in the home and workplace. Most people are generally aware of their hazards. But they can also ultimately cost many more times their purchase price if disposed of incorrectly.
Because pesticides can harm the environment, it is natural, but totally incorrect to think it is safer to flush them down the drain.
Pesticides are made to be safe in the environment if used as directed, but are not safe in a sewer system. If allowed to enter the system, pesticides lead to very expensive equipment and process changes that the sewer system user must pay for through higher rates.
The "organophosphate" pesticides which include Diazinon, Dursban and Malathion, generate the most problems.
While use of organic pesticides is increasing, the use of organophosphates is still common.

CCMA stresses the importance of keeping all pesticides out of drains that lead to the sewer system. As little as two ounces, or one-quarter cup of Diazinon, makes it impossible for CCMA to comply with required water treatment standards.

Whether in liquid or dry form, even with very small amounts, a few rules always apply when using pesticides:

• Never pour any pesticide solution down a drain, or clean containers or equipment in a sink
• Mix only the amount and strength required and use organic substances if possible
• Always mix, rinse, clean up and drain excess solutions outside on the ground or yard.

Pesticides only enter a sewer system through the drains of system users. Therefore, system users are the only ones who can prevent this contamination and resulting expensive corrective measures.
For more information, contact the National Pesticide Information Center at (800)858-7378 or visit their web site at www.npic.orst.edu
Of additional concern to the environment, is proper disposal of prescription drugs. The FDA advises that the label or accompanying patient information for individual prescription drugs be referenced to determine if safe to dispose into the sewer system.

Dursban link FAQ by Dr. Doris Rapp

More about Dursban from Dow AgroSciences

A Case Study and Dursban

Quote: U.S. Environmental Protection Agency (EPS) June 8, 2000 announcement that Dursban - the most widely used household pesticide in the United States is being eliminated from home and garden use. "This action is good news for the protection of our country's public health. It is good news for the environment. And it is particularly good news for children, who are among the most vulnerable to the risks posed by pesticides.