Trade Waste Agreement: What It Is and the Five Lines Every Kitchen Owner Should Check

This guide is for owners and managers of restaurants, cafes, pubs, clubs, takeaways and food court stalls in Australia. By the end you will know what a trade waste agreement is, whether your kitchen needs one, which five lines to check in yours, and what to do if you cannot find it.

What is a trade waste agreement?

A trade waste agreement is permission from your local water authority, with rules attached. It lets your business send liquid waste into the public sewer. In return, you accept limits on what goes down the drain and a duty to treat it first.

For a commercial kitchen, that treatment is usually a grease trap. The agreement sets the size and type of trap you need and how often it must be pumped out. It can also cover what you can flush, how you keep records, and when an inspector can visit.

The name changes by state and by utility. You will see "trade waste consent", "consent to discharge", "trade waste approval" or "trade waste agreement". They all mean the same thing. Smaller regional utilities such as GWMWater and Western Port Water publish their own trade waste pages, and the wording differs from one to the next.

Who needs one

If greasy water from your kitchen goes into the sewer, you almost certainly need an agreement or consent. That covers sinks, dishwashers, floor drains and mop sinks that feed the trap.

Small food businesses often fall into the lowest-risk category. Larger or busier sites sit in higher categories with tighter conditions. Each water authority sets its own category rules, so check with the one that serves your suburb.

In Sydney, the authority is Sydney Water. Our page on the Sydney Water trade waste agreement explains how to read one line by line. For the wider legal picture, see grease trap regulations in Australia.

Why most operators do not know what theirs says

In the trade, the pattern is familiar. Most operators only think about the trap when it smells, when it backs up, or when a council or Sydney Water inspection is due. The rest of the time the agreement sits in a drawer, or in the inbox of whoever signed the lease.

That agreement sets the pump-out frequency for your kitchen, and many operators have never read it. Fines and blocked drains start in that gap.

The five lines to check in your agreement

Open your agreement and find these five items. Each one changes what you do this month.

1. The named site and the named holder

Check that the street address and business name match your kitchen today. If you bought the business, moved units or changed your trading entity, the agreement can still name the old holder. Fix that first.

2. The required pump-out frequency

This line matters most. Some agreements set a fixed interval, such as every three months. Others tie the frequency to trap size and loading. Write down the exact wording. Your cleaner needs it, and so does your inspector.

3. The trap type and size

The agreement names the device you must have. If your site has a different trap, or someone added a second one, the paperwork no longer describes your kitchen. Our post on naming the same device across paperwork, quote and trap covers this mismatch.

4. The record-keeping duty

Many agreements require you to keep service dockets for a set period. Find out how long, and where you must keep them. The usual proof is a cleaner's docket that lists the date, the volume removed and the disposal site.

5. The inspection and notice terms

Look for how much notice an inspector gives and what happens after a failed inspection. Some agreements give you a set window to fix faults. Knowing that window tells you how fast you need to book a clean.

A worked example: the schedule that looks fine and is not

Take a cafe owner who books a clean every four months because the last owner did. The trap looks fine at each visit, so nothing prompts a second look.

Now suppose the agreement says every three months. The cafe falls one clean short each year. Nobody complains, and the drains run. The gap only shows up when an inspector asks for the docket history, or when the trap overflows on a busy Saturday.

The decision rule is simple. Compare the frequency in the agreement with the dates on your last three dockets. If any gap between cleans runs longer than the agreement allows, book a clean now and switch to the agreement's schedule. If your kitchen has grown busier since the agreement was signed, ask your cleaner whether the trap needs more visits than the minimum. The agreement sets the floor. Your actual trade can push the schedule above it.

Comparing your options when the paperwork is missing or out of date

Every kitchen's situation is different. Match yours to one of these.

• You have a current agreement that matches your site. Read the five lines above, set a calendar reminder for each pump-out, and keep your dockets in one folder. This costs you an hour and nothing else.
• You have an agreement that names a previous holder. Contact the water authority and ask how to transfer or reissue it. Expect paperwork and some waiting, so start before your next clean falls due.
• You cannot find any agreement. Ask your landlord, your agent or the previous operator first. If none of them has it, contact the water authority with your address and ask what they hold on record. No document does not mean no duty.
• You are about to take over a kitchen. Ask for the agreement, the last three dockets and the trap location before you sign. Our guide on finding the grease trap before you sign walks you through it.
• You share a trap with neighbouring tenants. The agreement often sits with the landlord or the centre manager. Find out who holds it and who books the clean, so a missed service does not fall between tenants.

How long each path takes depends on the authority. Transfers and reissues take longer than reading a document you already hold, so do not leave them to the week before an inspection.

Costs the agreement quietly drives

The agreement does not set your cleaning price, but it shapes it. Cleaners quote on trap size, service frequency, access to the trap and disposal fees. Two kitchens with the same trap can pay very different prices.

Frequency is the part the agreement controls. A higher required frequency means more visits each year. Access matters too, because a trap under a heavy lid or behind stored stock takes longer to reach. Disposal fees depend on the volume removed and the licensed facility that takes it. For a closer look, read why two kitchens with the same trap pay different prices.

What to ask next: the questions nobody answers

Three questions come up after the first read. The authorities' own pages rarely answer them.

Does the agreement follow me if I change cleaners? Yes. The duty sits with the site and the holder, not with your cleaner. Any licensed cleaner can meet it, as long as they give you proper dockets.

Who is responsible if my cleaner misses a visit? The agreement holder carries the duty. On paper, your cleaner's missed visit is your missed visit. Confirm each booking in writing.

Does a new menu change my agreement? It can. More fried food, a new fryer line or longer opening hours all change what reaches the trap. Tell the water authority if your operation changes materially, and review your schedule against the new load.

Putting it together this week

Find the agreement. Read the five lines. Compare the pump-out frequency with your last three dockets. Book a clean if you find a gap, and fix any name or address mismatch with the authority.

For fair prices fast, get 3 grease trap quotes from licensed cleaners. We send them by SMS, usually within about a minute of your request. The service covers Sydney today and is expanding to other Australian cities. You can see local options on our Sydney grease trap cleaning page. Sydney kitchens can also read how Wastesafe works to see how cleans are tracked.

If you are a licensed cleaner and want these jobs, apply to join GreaseTrapQuotes and see contractor territory pricing.

Ready to book? Get your three quotes now, match them to the frequency in your agreement, and put the next clean in the diary.

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Related reading: Grease Trap Servicing: A Decision Guide for Australian Kitchen Owners.