Water Usage and Car Wash Operations

Do carwashes really save water? Well, if you wash your own car in your driveway and use your garden hose with a flow rate of 8 gallons per minute and you fill up a 5 gallon bucket with soap and then wash your car; how much water do you think you will use?

If you spray your car off for four minutes (24 gallons) and then soap your car up (5 gallons of soap) then rinse your car for 6 minutes (48 gallons) then you will use 77 gallons of water. Quite a bit, but then again so is a long shower too.

Washes

The average full-service car wash in the United States as per industry surveys show that it takes 37 gallons to wash one car. But what the industry surveys don't tell you is that many carwashes use a reverse osmosis rinse. To make reverse osmosis water it usually takes 3 gallons to make 1 gallon of the pure water for the spotless rinse.

How much of the water at a car wash is recycled? Well the truth is that most carwashes do not recycle their water. Many do but most do not. A mobile carwash generally uses a 3.1-gallon per minute pressure washer at 2200 psi with an average spray time of three minutes total. That is 9.3 gallons of water. And therefore it is the most efficient way to wash your car to conserve water.

We must protect this valuable resource of our water supplies and conserve water whenever possible. As our population in the United States by 2050 grows to over 430 million people water will be a more and more precious commodity. Please do not waste water. Learn ways you can conserve water in your community. Think on this in 2006.

Water Usage and Car Wash Operations

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