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Vehicle Wash Bay Oil Water Separator

For sustainable wastewater management in all vehicle washdown bays

Key wastewater challenges for the vehicle wash bay industry

  • Regulatory agencies often have strict guidelines for the discharge of wastewater.
  • Vehicle wash water can contain oils, grease, heavy metals, and other pollutants.
  • Oil buildup in drainage systems can lead to clogs and increased maintenance costs.
  • Contaminants like oil and grease can corrode pipes, drains, and infrastructure over time.
  • Oil contaminates freshwater resources, which are valuable and limited.
  • Oily water cannot be reused for other purposes.

Industry overview - managing oil in vehicle washdown bays

To effectively manage the discharge of oily water in your vehicle washdown bay, we recommend using an oil water separator. This is a specialised piece of equipment specifically designed to separate and remove oil, grease, and other contaminants from wash water. This ensures your washdown bay meets environmental regulations by preventing the discharge of pollutants into public water bodies.

At Cleanawater, we stock two types of oil water separators actively used within the vehicle washdown bay industry. Available in stainless steel and polyethylene, our range is designed with flexibility in mind, making it easier to find a model that suits your wash bay’s operational flow and budget. With capacities ranging from 1,000L to 5,000L nominal flow rate per hour, we can help you find a reliable wastewater management solution.

Learn about our wastewater compliance measures

Using oil separators for your vehicle washdown bay means complying with necessary water authority restrictions and being kinder to the environment.


Phone us to discuss how we can help you.

Call us on 1800 353 788


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Cleanawater’s vehicle wash bay industry solutions

Cleanawater is a leading provider of innovative solutions tailored to the vehicle washdown industry's unique needs. With a deep understanding of environmental compliance and waste water treatment, we offer a comprehensive range of products designed to address challenges faced by vehicle washdown operations.

We understand the importance of water conservation in vehicle washdown operations. That’s why our customisable water recycling systems efficiently treat and purify used wash water, allowing businesses to reclaim and reuse water for multiple wash cycles. This not only reduces water consumption but also minimises operational costs and the overall environmental footprint of the wash bay.

By implementing our oil water separators into your everyday wash bay solutions, you can easily meet and exceed all water authority regulations. Plus, these oil water separation systems are seamlessly maintained, saving you time and money through decreased running costs and optimal operational efficiency.

Understanding the oil water separation process

Step 1


The pre-treatment stage of the process involves filling the separator with the oily wastewater generated from the vehicle washdown facility.  

Step 2

Primary separation

Non-emulsified oil droplets and other solids rise to the surface to form a floating layer of sludge, which is then removed mechanically.

Step 3


The water moves into a coalescing chamber equipped with specialised media packs that aid in oil removal.

Step 4

Secondary separation

The remaining free-floating oil and smaller suspended solids continue to rise to the surface from the coalescing plate separators.

Step 5


The clarified water, which has undergone multiple stages of separation, exits the car wash bay oil water separator system.

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