Professional Grease Trap Installations & Compliance

A failing or non-compliant grease trap is a massive liability that can instantly shut down your commercial kitchen and result in severe Water Corporation fines. Our licensed plumbing team provides expert installation, upgrades, and maintenance of commercial grease arrestors to keep your venue operating legally and efficiently.

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     5.0 Google41 reviews

Essential Pre-Treatment for Commercial Kitchens

Whether you are fitting out a new cafe, expanding a busy restaurant, or upgrading an existing food manufacturing facility, proper trade waste management is a strict legal requirement in Western Australia. Pouring hot fats, oils, and grease (FOG) down the drain without an approved pre-treatment device will quickly choke the municipal sewer lines, leading to catastrophic overflows and heavy daily non-compliance charges.

We handle the entire grease trap process - from calculating the exact sizing requirements based on your kitchen's fixtures, to installing heavy-duty, fully approved arrestors. We work seamlessly with shopfitters, builders, and business owners to ensure your trade waste plumbing is perfectly positioned, easily accessible for routine pump-outs, and strictly certified.

Need a commercial grease trap installed or upgraded? Call our local team today.

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Call 0414 772 288

The Mindarie Plumbing Service Guarantee

Strict Water Corp Compliance

We ensure every installation meets the exacting standards required to secure and maintain your Water Corporation Trade Waste Permit.

Accurate System Sizing

We meticulously calculate your kitchen’s peak flow rates to ensure you never install an undersized, non-compliant unit that fails inspections.

Heavy-Duty, Approved Installs

We supply premium, Water Corporation-approved concrete and advanced polymer grease arrestors designed to withstand the rigours of the hospitality industry.

Meet Brett & The Team

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What Mindarie Locals Are Saying

       
 Excellent5.041 reviews
 5.0
 Excellent41 reviews
  Write a review 
 
 
 
   
 
 
      Posted on Google  
   
   Michael Mulcahy 
 194 days ago
 
 
 Trustindex verifies that the original source of the review is Google. As a reticulation contractor, we are always looking for reliable plumbers to work with.

We had a client in Burns Beach who noticed water leaking down their driveway while they were overseas on holiday. After seeing it on their CCTV, it became an urgent priority to have it fixed as soon as possible.

We were initially called out, as it was assumed to be an issue with the reticulation system. However, upon inspection, we quickly identified a leak in the copper pipe coming off the water meter.

We contacted Brett from Mindarie Plumbing and Gas and sent through some photos. Brett was able to provide a prompt estimate and arrange a time to attend the property in Burns Beach.

He quickly repaired the leaking copper pipe near the water meter, and upon completion, sent through photos, giving us peace of mind that the issue had been resolved.

Outstanding service from a reliable local plumber. We highly recommend Brett and the team at Mindarie Plumbing and Gas for any plumbing work in Burns Beach and surrounding areas.
  
 
     Posted on Google  
   
   robin ainslie 
 553 days ago
 
 
 Trustindex verifies that the original source of the review is Google. Thanks Brett...110% satisfied...Great service at a very reasonable cost.
  
 
     Posted on Google  
   
   Dan Steed 
 580 days ago
 
 
 Trustindex verifies that the original source of the review is Google. Always have scrutiny with any trade that you call in an emergency. Absolute gentleman. Charged us reasonably the whole way through. Didn’t ask for a review which means all of his reviews are organic. Probably the first review I’ve gone out of my way to make which speaks volumes about Brett.
  
 
     Posted on Google  
   
   Claire Creamer 
 637 days ago
 
 
 Trustindex verifies that the original source of the review is Google. Brett helped with a toilet leak. He turned up on time, was polite, efficient and knowledgeable and did the job quickly and without fuss. He was also very tidy! Thank you very much!
  
 
     Posted on Google  
   
   Elizabeth LS Cregan 
 774 days ago
 
 
 Trustindex verifies that the original source of the review is Google. Efficient, great service, helpful and friendly, thanks Brett.
  
 
     Posted on Google  
   
   Stephen Thomson 
 778 days ago
 
 
 Trustindex verifies that the original source of the review is Google. Brett total pleasure to meet you today. It was a quick response and a fantastic outcome from you, who sorted our problem in no time. Extremely happy with the fix and billing. I don't often have these positive endings well recommended.
  
 
     Posted on Google  
   
   Michael Bretagne 
 937 days ago
 
 
 Trustindex verifies that the original source of the review is Google. Brett was friendly, quick and well priced. I would recommend him any time
  
 
     Posted on Google  
   
   Melanie Johnson 
 968 days ago
 
 
 Trustindex verifies that the original source of the review is Google. Service was prompt, efficient and fixed the problem first time. Very impressed.
  
 
     Posted on Google  
   
   beth wilson 
 1152 days ago
 
 
 Trustindex verifies that the original source of the review is Google. Brett is very affordable saved my parents thousands of dollars for doing a simple repair will definitely be recommending him to friends and family and definitely be coming back in the future
  
 
     Posted on Google  
   
   Lam Ka Ho 
 1423 days ago
 
 
 Trustindex verifies that the original source of the review is Google. Good knowledge , reasonable price.
The best of the north 👍🏻

Frequently Asked Questions

What exactly is a grease trap (or grease arrestor)?

A grease trap is a specialised plumbing device designed to intercept and pre-treat greasy wastewater before it reaches the main municipal sewer. It is typically a large tank fitted with internal baffles. When hot, greasy water enters the tank, the flow is significantly slowed down, allowing the wastewater to cool.

As it cools, the lighter fats, oils, and grease float to the surface to form a crust, while heavier food solids sink to the bottom as sludge. The relatively clear water in the middle is then allowed to flow out through a uniquely designed outlet pipe and safely into the public wastewater system.

Do I legally need a grease trap for my business?

Yes, if your business handles, prepares, or cooks food, it is a strict legal requirement under the Western Australian Water Services Act 2012. Any business discharging trade waste into the sewer system - including lunch bars, cafes, bakeries, and large restaurants - must hold a current Trade Waste Permit from the Water Corporation.

As a condition of this permit, you must have an approved pre-treatment device installed. Operating without one, or failing to upgrade an undersized unit within the mandated timeframe, can result in massive daily non-compliance charges, legal action, or even having your venue completely disconnected from the wastewater system.

How do you determine what size grease trap my cafe needs?

Sizing a grease trap requires strict adherence to Water Corporation guidelines; it is not a guessing game. The minimum allowable size for a grease arrestor in Western Australia is 500 litres, but busy restaurants often require units upward of 2,000 litres.

We calculate the exact size required using the "Fixture Unit Rating" method. This involves assigning a specific value to every single fixture in your kitchen that feeds into the trap - such as double pot sinks, hand basins, and wok burners - and multiplying that total to find your maximum hourly flow rate. We ensure the trap is perfectly sized so the wastewater has at least one full hour of retention time to cool and separate correctly.

Can I connect my commercial dishwasher to the grease trap?

No, it is strictly against plumbing regulations to discharge commercial dishwashers or glass washers into a grease trap. These appliances use incredibly high water temperatures and highly concentrated, quick-breakdown detergents that are designed to completely dissolve baked-on grease.

If this scalding, detergent-heavy water enters the grease trap, it will instantly liquefy and emulsify the existing fat crust that has already been captured. This liquified grease will then easily bypass the baffles and flow directly into the public sewer, completely defeating the purpose of the trap and putting your venue at risk of failing your wastewater quality tests.

How often does a grease trap need to be pumped out?

Your grease trap is not a bottomless pit. Over time, the floating fat crust and the sunken sludge will build up, significantly reducing the amount of clear water the tank can hold. If the combined solids exceed 30% of the tank's effective depth, the trap will fail and allow greasy water to escape into the sewer.

The specific pump-out frequency is officially determined by the Water Corporation and stated directly on your Trade Waste Permit (often every few months, depending on your volume). You must hire a licensed liquid waste contractor (such as a FOGMan approved contractor) to physically pump out the tank, clean the baffles, and transport the waste to an approved treatment facility, keeping your business fully compliant.

Have a question?

Contact Our Team

Professional Grease Trap Installations & Compliance

Essential Pre-Treatment for Commercial Kitchens

The Mindarie Plumbing Service Guarantee

Strict Water Corp Compliance

Accurate System Sizing

Heavy-Duty, Approved Installs

Need An Emergency Plumber?

What Mindarie Locals Are Saying

Frequently Asked Questions

Request A Quote