top of page

Grease Traps and
Oil & Grit Interceptors

We have a range of engineered systems suitable for your commercial entity. 

Below is an introduction to the different systems, how they work and what you can expect.

If you have any queries, just pick up the phone and give us a call, or send us an email. We are always very happy to help.

Grease Traps

A grease trap's function is to remove grease from the wastewater stream to achieve acceptable standards before discharging into a sanitary sewer system. Precast concrete grease interceptors are the most effective choice for grease removal, they are watertight, durable and easy to install.

Manufactured with high strength steel reinforced concrete, these come in a range of sizes to suit different applications. Trafficable options are also available if required.


Multi chamber systems retain grease and fat by allowing them to settle on the surface and allowing the clean water to pass through. Specifically designed grease filters can be added to these systems when a higher level of treatment is required

Looking for technical information? 
Austin Bluewater Manufacturing

Oil & Grit Interceptors

Oil & Grit Interceptors are the technical solution for the separation of oil & grit from stormwater runoff at fuel stations, car parks, commercial spaces, contracting environments and industrial wash down bays. The interceptor uses gravitational force and varying densities of oil and water to remove oil from drainage.

Oil and grit interceptors are an effective and simple solution to separate and store grits and all types of oils from lightly contaminated storm water and wash-down water. They are required for the separation of heavy solids (sand & grit) and floating hydrocarbons from storm water or wash down areas. They are typically used in industrial and commercial applications where there is potential risk for contamination from hydrocarbon products into waterways.

The multi chambered treatment tank is installed close to the collection point (to ensure the oil reaches the interceptor before it emulsifies or pollutes the area) allowing for the storm water / wash down water to flow into the settlement chambers prior to entering a storm water lateral or disposal system.

Oil and grit interceptor Grease Trap


Oil and grit interceptor Grease Trap
  • Multi-chambered tank design - engineered for effective grit and oil separation

  • Watertight construction of tank preventing water ingress

  • Manufactured using steel reinforced 45mpa commercial strength concrete

  • Robust design for commercial applications

  • Swift lift anchors to ensure easy manoeuvrability and cartage

  • Option to customise design to suit the application including engineers PS1 for loading design.

  • Options for cast iron manhole covers

  • Customised options for inlet and outlet pipework

  • Engineered designs for heavy duty trafficable lids

Best suited to…

The Austin Bluewater Oil & Grit Interceptor can be used in the following applications:

  • Driveways

  • Loading bays

  • Small sealed carparks

  • Commercial carwash facilities

  • Wash down bays

  • Depots or terminals

  • Pre-treatment to a retention tank or pond

  • Industrial yards

Approved Standards

Built to NZS 3109, Concrete Construction New Zealand Standard

Oil & Grit Interceptor Brochure

Oil & Grit Interceptors

Technical Specifications Brochure

Download the brochure
Looking for technical information? 

Want to know more?
Contact our team today!

0800 287 846

bottom of page