The majority of car washes today use reverse osmosis systems to take the minerals out of the water. In most cases, RO requires a minimum of 3 gallons of waste to 1 gallon of product water. Wastewater is required to carry the minerals away from the membrane so they will not clog up and stop producing mineral-free water. Dime Water, Inc.’s RO systems produce ultra pure water, which can be used to flush away marks in the car wash. Also, RO treated water leaves no line marks on the car lacquer while it dries up.
Kind of car washing activity |
Average drinking water consumption per car wash installation |
Washing cars by hand with a hose |
400 liters |
Conventional car wash installation |
150 liters |
Car wash installation with Dimewater water recycling system |
10-50 liters |
Washing cars out on the street has been restricted for a long time in many communities for ecological considerations. Washing water contains oils and lubricants, heavy metals, suspended matter, tar and microorganisms, which will end up in soils and posing a threat to groundwater. Industrial water in a car washing installation can be microbiologically contaminated, so it is necessary for both the personnel and the customer to be protected against a possible health endangerment.