When you wash your car in the driveway, remember - you're not just washing your car in the driveway.
All the soap, scum, and oily grit runs along the curb. Then into a storm drain and directly into our lakes, rivers, and streams. And that causes pollution which is unhealthy for everyone. So how do you avoid this whole mess? Easy! Wash your car on the grass or gravel instead of the street. Or better yet, take it to a car wash where the water gets treated or recycled
What's the problem with car washing?
There's no problem with washing your car. It's just how and where you do it. The average driveway car wash uses a total of 116 gallons of water! Most commercial car washes use 60 percent less water in the entire washing process than a simple home wash uses just to rinse off a car. Most soap contains phosphates and other chemicals that harm fish and water quality. The soap, together with the dirt and oil washed from your car, flows into nearby storm drains which run directly into lakes, rivers, or marine waters. The phosphates from the soap can cause excess algae to grow. Algae look bad, smell bad, and harm water quality. As algae decay, they use up oxygen in the water that fish and other wildlife need.
Clean Water Tips: How can you wash your car and help keep our waters clean?
- Use soap sparingly. Use a hose nozzle with a trigger to save water.
- Pour your bucket of soapy water down the sink when you're done, not in the street. Or wash your care on a grassy area so the ground can filter the water naturally.
- Best of all, take your car to a commercial car wash, especially if you plan to clean the engine or the bottom of your car. Most car washes reuse wash water several times before sending it to the sewer system for treatment.
To find out more about the advantages of using commercial car washes, the New England Carwash Association (NECA) website provides a list, with the locations, of all the state's carwashes. Consumers can call the NECA at 781-245-7400 to get information on the latest technologies carwashes are using to battle nonpoint source pollution in your community and in the state!
Also see the guidance in our Unpaved Roads Best Management Practices Manual, linked below.