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GPTs

A gross pollutant trap (GPT) is a stormwater treatment system’s first line of defence. Providing primary treatment, GPTs remove bulky pollutants, plastic pollution, sediment, and litter – and stop their conveyance from our catchments.

Gross Pollutant Traps

StormSack

Highly engineered water quality devices, deployed directly into the stormwater system to capture contaminants close to the surface.

Ecoceptor

A vertically configured pollutant trap suitable for low risk applications. 

BaffleBox

Concrete or fibreglass structures containing a series of sediment settling chambers separated by baffles.

Vortceptor

Non-blocking hydrodynamic separator with a unique screen and treatment action, resulting in excellent pollution removal performance and high water quality outcomes.

Latest News

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GPT for Wetlands Conservation: Greenfield BaffleBox Deployment

Improving Water Quality on Tamaki Drive & Waitemata Harbour

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