Construction Wash Bays & Oil Water Separators

Civil works delays could cripple your project timeline. Our portable wash bays are designed for construction sites where time and compliance matter most. Each wash bay is a complete water treatment and recycling system built with hot-dip galvanised steel frames to withstand heavy-duty conditions, mud, dust, and high-load heavy equipment. With wash pads and ramps engineered for up to 100T mining trucks or heavy-duty plant hire machinery, our modular wash bays are fit for every application from light vehicles to large-scale equipment cleaning.

Portable wash bay benefits include a fully contained wastewater capture process, protecting water quality and preventing pollutants from entering the waste stream. The modular wash bay design means the system can be easily relocated to new sites as projects shift, giving you a cost effective solution without sunk civil works. Our wash bay system integrates holding tanks, pumps, skimmers, and coalescing plate separation technology to ensure pollutants are removed from wastewater before discharge.

Every project brings a new case, and the right wash bay makes it easy to handle. Our wash bay systems combine oil water separator technology, water recycling loops, and water treatment solutions to keep water clean and equipment ready. Whether you’re washing a single vehicle or an entire fleet, these wash bays deliver reliable performance and protect environmental outcomes. Contact us today to build a wash bay system that works where and when you need it.

Key features of our construction wash bays:

A wash bay is not just about keeping vehicles clean — it is a critical step in protecting equipment performance. Mud, clay, and diesel residue accelerate wear on components, increasing maintenance costs. By removing solids and oily residues from heavy equipment, our systems extend the life of vehicles and improve site safety. Maintaining high water quality in the wash bay system also means reduced corrosion and longer service intervals for pumps, oil water separators, water recycling systems, and related components.

For construction sites, the case of downtime can cost tens of thousands of dollars per day. A properly designed water treatment system reduces unplanned downtime by preventing contamination of brakes, tracks, and engines. Our modular bays are designed for easy service access, quick removal of solids from pits, and efficient skimming of oil droplets from water tanks. This approach ensures that wastewater treatment remains efficient and your project timeline stays on track.

Take control of your wash bay today — every case of downtime avoided adds value to your bottom line. Contact WashBay HQ to explore tailored solutions that integrate seamlessly with your existing systems and keep your operations running smoothly. Let’s trade unplanned repairs for predictable performance and longer equipment life.

Oil water separators are the heart of an effective construction wash station. Our systems use vertical tube and coalescing plate separator technology to treat wastewater at flow rates of 1,500 L/h, 3,000 L/h, or 6,000 L/h, depending on site demand. The treatment process relies on gravity and media surfaces that attract oil droplets, causing them to coalesce and float for skimming. This is a low-maintenance, mechanical solution that does not rely on chemical dosing, making it safer for crews and more cost effective over time.

Each separator is constructed from stainless steel for maximum durability and resistance to corrosion in harsh construction environments. Optional upgrades include diaphragm pumps, submersible pumps for pits, electrical controllers with float switches for automated operation, and high capacity tanks for large waste streams. The result is a turnkey treatment system that removes hydrocarbons, keeps wastewater compliant, and meets Australian standards.

Our systems also support integration with water recycling units, allowing sites to reuse treated water for vehicle wash cycles. This reduces water consumption, lowers costs, and helps construction companies meet sustainability targets. Whether for a truck wash station, mechanical workshops, or a mobile project facility, these separators are designed for industrial duty and reliable performance.

When the case for compliance and cost savings is clear, the right oil water separator makes all the difference. Contact WashBay HQ to discuss solutions built for your flow rates, waste streams, and operational goals. We’ll help you trade complexity for a simple, durable system that keeps your site running clean and within environmental regulations.

WashBay HQ is an Australian company specialising in modular wash bays, oil water separators, and wastewater treatment solutions. Our products are designed for the construction industry’s needs, from small equipment cleaning pads to large truck wash stations. With a wide range of models, accessories, and treatment components, we can supply the perfect solution for any construction facility case or requirement.

Our systems are built for compliance, engineered for performance, and supported by a national service network. By choosing our products, you get a proven solution that protects your operation, reduces environmental risk, and helps you meet all trade waste, EPA, and local authority standards. Get your wash bay system installed in days and keep your project moving without costly downtime or penalties.