The Legal Way of Liquid Waste Disposal in Victoria is HERE

Spray painting and coating operations generate wastes including exhaust filters, paint scraping, residual coatings and waste powder. Many of them contain solvents and chemicals which are health hazards, fire risks and have the potential to pollute our environment. As a business in Victoria, you must clearly understand legislations, regulations and policies relating to the management and protection of various environmental areas and know how to dispose of waste properly.


Return duct for water wall

Furthermore, liquid waste common in your spray booth because of your water wash systems. Water wash systems, also known as waterfalls, use a separator system or a filter to remove paint from the water. Paint filters may be hazardous if heavy metals are found in the paint or coatings they capture. So this wastewater should be managed properly to protect our waterways.


3200 litre drums filled with excess paint

The Outcome of the Illegal Disposal


Certain waste that poses a potential risk to human health and the environment are known as prescribed industrial wastes (PIWs) in Victoria’s environment protection laws. The Environment Protection (Industrial Waste Resource) Regulations 2009 specifies how PIW must be managed. Also, as an effective environmental regulator, Environment Protection Authority (EPA) Victoria has other relevant laws and regulations to protect our environment. Failure to do so could result in negatively impacting and irreversibly harming the environment. Failure to comply with these laws and policies could also result in your business receiving substantial fines, prosecution and other penalties. You can get some ideas of EPA’s enforcement response if you don’t dispose of the waste appropriately in Figure 1.



EPA's enforcement response

Figure 1 : EPA’s enforcement response

Source : EPA website


The Right Disposal of Spray-painting Material


Paint particles suspended in the air and odours associated with the use of solvent and paints can create environmental problems and raise health and safety concerns. Therefore, all spray painting must be performed in your booth. Moreover, your booth should comply with Australian Standards 4114. We will talk about it later.



The management of wastewater has become highly regulated areas in Victoria due to our local water level. Therefore, Liquids are banned from landfills and must be treated in a licensed facility beforehand. So, the right and legal way to dispose of your spray-painting materials are as follows:

  • Discharges should pass out of the premises via a vertical, open-topped stack.

  • This should be at least three metres higher than the highest roof level within 15 metres.

  • This should be at least three metres higher than the highest roof level within 15 metres.

  • Filtering devices should be properly and regularly maintained.

  • Two-pack type paints must only be used in water wash booths, with the accumulated sludge, waste paints and thinners/solvents collected and disposed of as Prescribed Industrial Waste.

  • PIWs must only be transported by a vehicle with a current EPA waste transport permit.


Trade Wastewater Discharge


Vacuum tank for liquid waste disposal

Trade wastewater is any water that is contaminated as a result of your business processes, including stormwater that might become contaminated when running off your property. Essentially, trade wastewater includes sewage and industrial waste. Therefore, water contaminated as a result of work processes or cleaning activities must be processed and controlled. There are two ways to dispose of your businesses trade wastewater:

  • Obtain a Trade Waste Agreement with your local water authority.

  • Appoint an EPA contractor to pick up and transport wastewater off site.

A Trade Waste Agreement allows you to dispose of trade wastewater through a triple interceptor/oil water separator which is then directed to the sewer. This is required by law and is necessary in order to effectively manage the risks associated with trade waste. There are strict guidelines on the quantity and quality of trade wastewater discharge going to the sewer. You may check carefully before discharge.

If you feel difficult in working with your local water authority, you can appoint an EPA contractor, which is much easier than the first method. EPA contractors will pump your trade wastewater into a truck and transport it off site, so it can be properly disposed of.


PSM Australia truck to dispose water waste

And you are so lucky that PSM Australia owns EPA license and has professional service to dispose of all waste legally and properly.


Why Choose PSM Australia as your EPA Contractor?


PSM Australia mobile treatment plant

PSM Australia has a highly trained and experienced team that can safely collect, treat, transport and correctly dispose of your liquid waste at a licensed liquid waste treatment facility. Our vacuum tanker can remove your liquid waste in bulk volume. We have extensive knowledge in the treatment of most liquid waste types and can develop a solution to meet your disposal needs. We also provide tracking and documentation to ensure your business complies with regulations.


If you want to know more about how we handle liquid waste, don’t hesitate to contact us.

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