27 Jul Grease Trap Requirements For Business
Grease Trap Requirements in Brisbane: Sizing, Installation and Cleaning Schedules
Grease traps are not glamorous, but if you run a food business in Brisbane they are as essential as your ovens. I have installed, repaired and maintained grease traps in everything from single cafes to shopping centre food courts, and the same issues come up again and again: undersized traps, missed cleans and operators who did not realise they needed a trade waste approval until the notice arrived. This guide covers what the requirements actually are and how to stay on the right side of them.
Why grease traps are required
Everything that goes down the drain in a commercial kitchen carries fats, oils and grease. Left unchecked, that grease cools, hardens and builds up in the sewer network, causing blockages and overflows that affect whole streets. A grease trap, formally a grease arrestor, intercepts the fats and solids before your wastewater enters the sewer.
In Brisbane and most of South East Queensland, food businesses discharging trade waste need approval from Urban Utilities, and a properly sized and maintained grease trap is a standard condition of that approval. This applies to restaurants, cafes, takeaways, commercial kitchens in hospitals and aged care facilities, food courts and food manufacturers.
Who needs a grease trap
The practical rule is that if your business prepares or serves food commercially, assume you need one until confirmed otherwise. Even a small espresso bar producing modest amounts of milk waste and rinse water can fall under trade waste requirements. Larger operations like full service restaurants and food courts always do.
The most common problem I see is new tenants taking over an existing food premises and assuming the previous fitout covered everything. Menus change, volumes change, and a trap sized for a sandwich shop will not cope with a fried chicken operation. Always confirm the trap suits your actual use before you sign the lease if you can.
How sizing works
Grease trap sizing is based on the fixtures discharging into it, the type of food operation and the volume of wastewater produced. Traps commonly range from around 1,000 litres for smaller operations up to 5,000 litres and beyond for large kitchens and food courts. The sizing calculation is done as part of your trade waste application, and the water authority has the final say.
Undersizing is a false economy. A trap that is too small overloads quickly, sends grease downstream anyway and forces a much more frequent pump out schedule. Getting the size right at installation is far cheaper than upgrading later, which usually means excavation and downtime for the kitchen.
Cleaning and pump out schedules
Your trade waste approval sets how often the trap must be pumped out by a licensed waste transporter, commonly somewhere between every four and thirteen weeks depending on the size of the trap and the load your kitchen puts on it. Between pump outs, the trap and its associated drainage still need attention, because pump out contractors take away the waste but they do not fix damaged baffles, blocked inlet pipes or failing lids.
That is where we come in. We maintain the plumbing side of grease trap systems, clear blockages in the lines feeding the trap, repair and replace components, and use hydro jetting and CCTV cameras to find and eliminate recurring problems in the drainage rather than treating the same symptom every few months.
What happens when traps are neglected
A neglected grease trap announces itself. Odours reach the dining room, drains slow down, and eventually wastewater backs up into the kitchen, usually during service on your busiest night. Beyond the immediate mess, non compliance with your trade waste approval can bring penalties and, in serious cases, restrictions on your ability to trade.
The fix is boring and reliable: right sized trap, scheduled pump outs, and periodic plumbing maintenance on the lines and the trap itself. Boring is exactly what you want from your drainage.
If you are fitting out a food business, taking over an existing kitchen or dealing with a trap that keeps causing trouble, talk to us before it becomes a shutdown. We handle grease trap installation, repairs and the drainage maintenance around them for hospitality and commercial kitchens across Brisbane, Ipswich, Logan and South East Queensland, available 24/7 when things go wrong. And as always, we clean up after ourselves, which feels especially relevant on this topic.
Frequently Asked Questions
Does a small cafe really need a grease trap?
Very often, yes. Trade waste requirements are based on what you discharge, not the size of your shopfront. Milk fats and food solids from even a small operation add up. Check your obligations with the water authority before fitout, because retrofitting a trap later is far more expensive.
How often should a grease trap be cleaned in Brisbane?
Your trade waste approval sets the frequency, typically between four and thirteen weeks. Busy kitchens with heavy frying may need more frequent pump outs. If your trap smells or drains are slowing well before the scheduled clean, the schedule or the trap size needs reviewing.
Who is responsible for the grease trap, the tenant or the landlord?
It depends on your lease. Commonly the tenant carries responsibility for cleaning and day to day compliance while structural matters sit with the owner, but leases vary. Confirm this before signing, and get the trap inspected so you know what you are inheriting.
Can you install a grease trap in an existing building?
Yes. We design and install grease arrestor systems in existing premises, including under floor and above ground options where excavation is difficult. Site constraints affect the approach and cost, so an inspection is the starting point.
With over 30 years in the plumbing industry he provides a level headed and experience approach to all client related work.He is genuine person with a keen interest in family, friends and helping others.
He holds Queensland Plumbing Licence 28840, Gas Licence L31 902, QBCC License 12 654 79, and Building Assets and Services Contractor licence 860 066.
Rich believes in educating clients about their plumbing systems and providing honest advice about when professional help is needed.
He founded Alexander Gas and Plumbing Co in 2013 to provide personal, trustworthy service to Brisbane families and businesses.
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