Grease Trap Cleaning Melbourne — Restaurants, Cafes & Commercial Kitchens
Golden Star Retail Cleaning coordinates professional grease trap cleaning and pump-out services for Melbourne restaurants, cafes, and commercial kitchens — including grease interceptor pump-out by a licensed liquid waste contractor, trap interior cleaning, baffle and inlet/outlet inspection, and waste disposal certificate. Melbourne Water Trade Waste Agreement compliant. Pump-out records maintained. Monthly to quarterly programs. Free consultation within 24 hours.
What Is a Grease Trap and Why Melbourne Restaurants Must Maintain It
A grease trap (also called a grease interceptor) is a plumbing device installed under or adjacent to a commercial kitchen that captures fats, oils, and grease (FOG) from dishwashing and cooking waste before they enter Melbourne Water's sewerage system. Under the Trade Waste Agreement that all commercial food businesses in Melbourne must hold with their water authority, grease traps must be maintained in working order and pumped out at the frequency specified in the agreement.
The grease trap works by slowing the flow of kitchen wastewater to allow lighter fats and oils to float to the surface and heavier solids to sink — the relatively clean water in the middle layer flows through to the sewer. Over time, the accumulated grease layer and solid layer fill the trap, reducing its capacity and effectiveness. When a grease trap is full or poorly maintained, untreated FOG enters the sewer — causing blockages, odour issues, and breaches of the Trade Waste Agreement.
Why this matters to Melbourne restaurant operators: A grease trap overflow or sewage surcharge from Melbourne Water can result in significant financial penalties under the Trade Waste Agreement. More immediately, a blocked grease trap causes sinks and floor drains in your kitchen to back up during service — a direct operational disruption. Regular scheduled grease trap pump-out prevents both outcomes.
Warning Signs — When Your Grease Trap Needs Urgent Attention
These warning signs indicate a grease trap is approaching or has reached capacity and requires immediate attention — don't wait for the next scheduled service if any of these are present.
Grease Trap Pump-Out & Cleaning Process
Grease trap pump-out must be performed by a licensed liquid waste contractor — the accumulated grease and solids are classified as trade waste and must be transported and disposed of to EPA Victoria requirements. Golden Star coordinates grease trap services through licensed liquid waste contractors and manages all scheduling, documentation, and records for Melbourne food business clients.
Grease Trap Pump-Out Frequency for Melbourne Restaurants
The required pump-out frequency for your grease trap is specified in your Melbourne Water Trade Waste Agreement — this is the contractual minimum. Operationally, the 25% rule is the standard measure: pump out when the combined grease and solids layer reaches 25% of the trap's total capacity. The frequency at which this occurs depends on your kitchen volume, cooking type, and trap size.
| Business Type | Recommended Frequency | Rationale |
|---|---|---|
| High-volume restaurant (100+ covers/day) | Monthly | High FOG load from intensive cooking — trap reaches 25% capacity within 4–6 weeks |
| Standard restaurant (50–100 covers/day) | Every 6–8 weeks | Moderate FOG load — typical Trade Waste Agreement minimum for most Melbourne restaurants |
| Cafe or small restaurant (under 50 covers/day) | Quarterly | Lower FOG load — quarterly typically adequate, confirm against actual trap fill rate |
| Deep fry or charcoal-heavy kitchen | Monthly or more frequent | Very high FOG load — deep frying produces the highest grease trap loading of all cooking methods |
| Bottle shop or minimal cooking venue | Quarterly minimum | Low FOG load — primarily dishwashing and beverage service |
Check your Trade Waste Agreement: Your Melbourne Water (or South East Water / Yarra Valley Water depending on your area) Trade Waste Agreement specifies the minimum pump-out frequency for your premises. If you are unsure of your agreement terms or your grease trap maintenance history, contact your water authority to confirm. Non-compliance with Trade Waste Agreement pump-out requirements can result in surcharges. Golden Star can help you establish a compliant scheduled program — call 0484 042 336 to arrange.
EPA Victoria & Trade Waste Requirements
Grease trap waste (the accumulated fats, oils, grease, and solids pumped from a commercial kitchen grease interceptor) is classified as trade waste under the Environment Protection Act 2017 (VIC) and must be managed in accordance with EPA Victoria requirements. Key obligations for Melbourne restaurant operators:
Licensed contractor only: Grease trap pump-out must be performed by a contractor licensed under the Environment Protection Act 2017 (VIC) to transport liquid waste. An unlicensed contractor cannot legally transport grease trap waste — engaging one exposes the food business operator to regulatory risk.
Approved disposal facility: The grease trap waste must be transported to and processed at an EPA Victoria-approved waste treatment facility. Disposal to sewerage, stormwater, or any unlicensed facility is an environmental offence under the Act.
Documentation: The waste disposal certificate issued after each pump-out must be retained as evidence of lawful disposal. Melbourne Water and council inspectors may request to see these records during Trade Waste Agreement compliance checks.
Trade Waste Agreement: All commercial food businesses in Melbourne must hold a current Trade Waste Agreement with their water authority (Melbourne Water, South East Water, or Yarra Valley Water depending on location) before discharging trade waste to the sewer. The agreement specifies permitted discharge limits and maintenance requirements including grease trap pump-out frequency.
See also: Kitchen Equipment Cleaning and Commercial Kitchen Cleaning for complete kitchen compliance programs.
Grease Trap Cleaning — FAQ
Grease trap pump-out must be performed by a contractor licensed under the Environment Protection Act 2017 (VIC) to transport liquid trade waste. This is a specific EPA Victoria licence — not a general plumbing licence or a standard cleaning company licence. The licensed contractor must transport the waste to an EPA Victoria-approved treatment facility and issue a waste disposal certificate. Golden Star coordinates grease trap services through EPA-licensed liquid waste contractors and manages all scheduling, documentation, and records as part of the service.
Three consequences: operational disruption (slow or backing up kitchen drains causing service interruptions), financial penalties (Melbourne Water can levy significant sewage surcharges under the Trade Waste Agreement for excess FOG discharge), and regulatory action (repeated non-compliance with Trade Waste Agreement pump-out requirements can result in formal compliance notices, fines, and in serious cases, suspension of the Trade Waste Agreement — which means the food business cannot legally operate). The operational disruption is the most immediately felt consequence; the financial and regulatory consequences are the most serious.
No. Grease trap enzyme and biological additives are sometimes marketed as reducing pump-out frequency or eliminating the need for pump-out. Melbourne Water's Trade Waste Agreement requirements specifically require physical pump-out at the agreed frequency — enzyme additives do not substitute for pump-out and using them does not satisfy your Trade Waste Agreement obligations. While enzyme additives can help manage odour between pump-outs and break down some light grease deposits in drain lines, they cannot reduce the accumulated solid layer in the trap that requires physical removal. Your Trade Waste Agreement pump-out schedule cannot be extended based on additive use.
Your required grease trap pump-out frequency is documented in your Trade Waste Agreement with your water authority. To find it: locate your current Trade Waste Agreement document (it should be on file with your premises paperwork). If you cannot locate it, contact your water authority (Melbourne Water for most Melbourne inner suburbs, South East Water for south-eastern suburbs, Yarra Valley Water for outer eastern suburbs — confirm which authority services your address). Tell them your premises address and Trade Waste Agreement number and they can confirm the current requirements. If you have never held a Trade Waste Agreement, contact your water authority immediately — operating a commercial kitchen without one is a Trade Waste Agreement compliance failure.
Get a Free Consultation for Grease Trap Cleaning
Licensed liquid waste contractor. Waste disposal certificate. Melbourne Water Trade Waste compliant. Scheduled monthly to quarterly programs. All Melbourne restaurants and cafes.