On the other hand, federal laws require commercial carwash facilities to drain their wastewater into sewer systems, so it gets treated before it is discharged back into the great outdoors. Additionally we have commercial car wash equipment such as computer controlled systems, high-pressure nozzles, pumps that minimize water usage. We also recycle and re-use much of the rinse water.
Washing a car at home may use between 80 to 140 gallons of water while we use less than 45 gallons per car of which much is recycled.
Don’t take our word for it.