July’s Green Tip of the Month encourages people to wash their cars in the car wash, instead of at home.
According to Southwest Car Wash Alliance, rinsing your car off with a garden hose at home can use 100 or more gallons of water. A standard garden hose can expel about 11 gallons of water per minute.
Self-service car wash stations limit you to around 17 or 18 gallons of water, and according to a study from the 2018 International Carwash Association, most full-service car wash stations average 30-45 gallons of water per car. And many carwashes recycle and reuse water.
Additionally, washing your car at home can wash dirt, oil, soap and other chemicals into a storm drain and into nearby rivers and lakes. Carwashes are designed to collect water to reuse and then send water to wastewater treatment plants to filter out pollutants.