GTPs are a part of the stormwater treatment process in development or redevelopment projects. The gross pollutant traps work on the removal of gross pollutants from water and some other tools to keep the water treated before entering into the main systems. Gross pollutants are debris and litter greater than 5 ml in size.

Gross pollutants can be anything from cigarette butts to chip wrappers and plastic bags. This debris can contaminate the water source and it can be a threat to aquatic habitats and wildlife that look unpleasant, cause an unwanted or bad smell, and attract pests. The gross pollutant traps remove the unwanted solids that help filter the gross pollutants from the water systems.

What is a gross pollutant trap?

A gross pollutant trap is a device that removes the solids that run off the water. The GPTs are suitable for the urban landscape, which includes:

  • Gully baskets
  • In-ground GPTs
  • Trash racks
  • Pipe nets

What does the device do?

The main function of the GPT is water quality control. All land use and development projects generate gross pollutants and the traps will act to:

  • Remove pollutants
  • Coarse sediments

Generally, most GPTs remove the sediment and pollutants, while some exclusively handle everything. The GPTs will provide the initial treatment in a water-sensitive urban design; it doesn’t provide flood control.

Gross Pollutant Traps | Willoughby City Council

Different sizes of GPTs

GPTs have two different applications in a neighborhood or for the regional catchment. The catchment system involves the collection of smaller GPTs filtering runoff from various blocks. These traps operate in isolation to protect quick downstream water or are used as a part of a more comprehensive treatment system. The stormwater treatment trains assist the GPTs in maintaining the goodness of the downstream treatments by removing the coarsest trace of contaminants.

Legal requirements for GPTs

Before installing or buying a GPT, it is crucial that you consider the regulatory requirements and seek approval. There are planning regulations, local health requirements, or building regulations that apply to GPTs, such as:

  • Development Act 1993
  • Environment Protection Act 1993

As part of the EP Act 1993, the following are considered:

  • Water quality
  • Air quality
  • Waste
  • Odor

Stormwater treatment will seek to achieve real, sustainable, and impactful improvement in water quality. The global water work with the local communities to ensure the following:

  • Flood protection
  • Improves water quality management
  • Protection of ecosystems

Working with the local consultants and councils – Global water’s knowledge of the stormwater requirements and treatment ensures that no stone is left unturned. With all these, the guarantee of maintaining good water flow from residential water pipes to the water drainage, canals, and up to the big streams where water disposal occurs, prevents flooding or unwanted incidents that can occur.

Install GPTs to maintain the flow of water and enhance a pollution-free environment.