Washing your car on the grass and not on the street or driveway is the first step in pollution prevention. What cleaning fluids and chemicals you use is equally important. Your lawn is pervious, meaning water can be absorbed here. Your lawn will actually serve as a natural filter, cleaning out biodegradable cleaners as the water sinks back into the ground and aquifers.
Roadways and cement are not pervious, and water will flow down your driveway, into the street and down to the storm drain taking all the cleaning chemicals with it. Remember that our City storm drains flow directly to local waterways, so any trash or chemicals you put there will pollute our rivers, streams and bay. To assure that you are doing your part in pollution prevention please follow these steps: