Car Wash Wastewater Treatment - Case Study


Courtesy of Hydrasyst

Wastewater Treatment Plant, Robina Car Wash, Qld

Case Study: Car Wash WWTP
Client: Robina Car Wash
Year: 2012
Capacity: 800 l/h


  • Car washes use very little potable (mains drinking) water by using fine nozzles and high pressure hoses.
  • Linked wherever possible to recycling systems which reclaim the water from the automatic wash bays.
  • Health and safety considerations limit the use of recycled water in most self-service bays.
  • A normal car wash will use the same amount of water as one load of clothes washing, 4 minutes of garden watering or a 5 minute shower.
  • 6.0 and 11.7 Giga litres of contaminated waste water is being directed into our storm water systems across Australia (and therefore into rivers and estuaries) as a result of vehicle washing at home on hard surfaces.
  • Contains hydrocarbons, surfactants, total organic carbon, dissolved copper, lead, zinc, turbidity and suspended solids, all of which exceed generally accepted standards.
  • Environmental authorities, Water Authorities and Local Councils alike are aware of the negative impact of home car washing.

Car washes normally must meet certain requirements of water use and waste water disposal
Commercial car wash must be more environmentally sustainable practice than washing a car at home.


CMAX™ adsorption technology has efficiently dealt with surfactant and other contaminants in car wash wastewater treatment. CMAX™ technology is being implemented at this Car wash site.


  • Providing cost savings for the client.
  • 1-2 year return on investment (ROI).
  • Retrofittable parts.
  • Low energy operation.
  • Performance guaranteed.
  • Recovers 60-80% of waste water.

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