I asked that question to Shell Head Office and was informed all car washes use non-recycled water. I formerly had a pass to Petro Can but it was a 6mo. minimum and cost $200 with tax. I found a place in St. Catharines much cheaper, $20/mo with a 3mo. minimum but it is 20km from my house, not really worth a twice weekly drive, much less daily. My current place also has the best fuel price and CAA/Visa discounts meaning their gas is always 6c/l cheaper, and is 2km from my house.