An average of 140,000 pounds of toxic chemicals enters Puget Sound each day, according to the Department of Ecology. An estimated 75 percent of those arrive in the Sound through stormwater that runs off roads, driveways and homes.
County commissioners are considering an ordinance to reduce pollution flowing from unincorporated Thurston County by cutting down on dumping in storm drains. It is illegal to put anything but rainwater into a storm drain; materials that are illegally dumped include acid, trash, motor oil, dog waste, and all types of non-rain water, including from vehicles being washed.
Read more: http://www.thenewstribune.com/2010/09/03/1326163/county-targets-dumpers.html#ixzz16RRZZRcQ