Grease Trap Importance and Function
Grease traps intercept fats, oils and solids before they enter the wastewater system. For food and beverage businesses, regular grease trap cleaning helps reduce the risk of blockages, overflows and water pollution while supporting effective wastewater management.
Typical Underground Grease Interceptor/Grease Trap

The Benefits of Regular Grease Trap Maintenance
Prevent Blockages
Regular grease trap cleaning helps prevent fats, oils and grease from building up and causing clogs, overflows or sewer system damage. Routine servicing can also reduce disruption to kitchens and other food-service operations.
Environmental Responsibility
Regular servicing supports responsible waste management by ensuring accumulated grease and solids are removed and managed appropriately. Collected grease trap waste is handled through our broader liquid waste removal and disposal services across South East Queensland, helping reduce environmental impact and support appropriate processing.
Why Choose CSA Specialised Services (formerly Elite Liquid Waste)?Certified, Compliant and Responsive Liquid Waste Services
Our ClientTestimonials
Highly recommend for waste removal.
Frequently Asked Questions
- What is grease trap cleaning?
Grease trap cleaning is the removal of accumulated fats, oils, grease and solids from a grease trap or grease arrestor so the unit can continue separating these materials from wastewater effectively.
Regular cleaning and pump-out help prevent excessive build-up, reduce the risk of blockages and overflows, and keep the grease trap operating as intended.
- What is the difference between grease trap pumping and grease trap cleaning?
Grease trap pumping removes the accumulated liquid waste, fats, oils, grease and solids from the trap using specialised pumping equipment.
Grease trap cleaning can involve additional work after pump-out, such as removing remaining debris and residue, inspecting the unit and cleaning internal areas where required. The appropriate service depends on the condition of the grease trap and the site’s servicing requirements.
- How does CSA Specialised Services clean a commercial grease trap?
CSA Specialised Services (formerly Elite Liquid Waste) uses specialised equipment to pump accumulated grease, liquid and solids from commercial grease traps.
The service can also include debris removal, inspection, deodorisation and additional trap cleaning where required, helping businesses maintain their grease trap and keep it ready for continued operation.
- How often should a commercial grease trap be pumped out?
Grease trap pump-out frequency depends on the size of the trap, the amount of fats, oils, grease and solids generated, the type of business and the conditions of the site’s Trade Waste Approval.
Businesses should follow the servicing frequency specified by their relevant water authority or Trade Waste Approval rather than waiting until the grease trap becomes full or starts causing problems.
- What happens if a grease trap is not cleaned regularly?
A grease trap that is not serviced regularly can accumulate excessive grease and solids, reducing its ability to separate these materials from wastewater.
This can contribute to unpleasant odours, blockages, overflows and problems within downstream drainage or sewer systems. Regular servicing helps prevent excessive build-up before it begins affecting site operations.
- Can cooking oil and food waste be put into a grease trap?
A grease trap is designed to intercept fats, oils, grease and some solids carried in wastewater, rather than being used as a disposal point for bulk cooking oil or food waste.
Businesses should minimise food solids entering the drainage system and manage used cooking oil through an appropriate separate disposal or recycling pathway where required.
- How much does commercial grease trap cleaning cost?
The cost of grease trap cleaning depends on factors such as the size and condition of the trap, the volume of waste requiring removal, servicing frequency, site access and the work required during the service.
Because these factors vary between commercial sites, pricing is generally based on the requirements of the individual grease trap and location.
- What happens to grease trap waste after it is pumped out?
Grease trap waste is collected and transported through an appropriate waste-management pathway for processing or disposal.
The downstream process can vary depending on the characteristics of the collected material and the receiving facility, so grease trap waste must be handled separately from normal business waste.
- Do businesses need to keep records of grease trap servicing?
Businesses may be required to retain records showing that their grease trap or grease arrestor has been serviced in accordance with their Trade Waste Approval
The documentation required can depend on the relevant water authority and service area, so businesses should retain servicing and waste-transport records provided after collection where applicable.