The global automotive industry is a major consumer of water for various production processes. Major water uses in the automotive manufacturing industry includes surface treatment and coating, paint spray booths, washing, rinsing, hosing, cooling, air-conditioning systems, and boilers. In addition to the use of water for these processes, there is the matter of wastewater, which needs to be treated to high standards to meet environmental regulations. Water is a key element in the production, maintenance, and cleaning of vehicles. The wastewater from manufacturing a car can contain metals, oils, grease, and chemicals from paint residue. If not properly treated they can be detrimental to the environment.