Saving Waterways: Gross Pollutant Traps

Gross Pollutant Traps (GPTs) are important frontline defenders that screen stormwater and protect waterways from solid waste and litter – with various configurations available to remove a wide range of pollutants.

Modern GPT designs offer versatility, including the capacity to remove many types of contaminants including sediments, silt, total suspended solids, nutrients, and oil & grease.

This pollution is prevented from conveyance through catchment areas and is captured before it reaches our rivers and ocean environments. Gross pollutants, including plastic pollution, are removed from our drains and subsequent parts of our stormwater network.

GPTs can be installed independently, or as stormwater pre-treatment that work in conjunction with secondary and tertiary devices. They are often used to compliment stormwater devices downstream, which play vital roles, for example filter cartridge systems, oil and water separators, and on-site stormwater detention.

Maintenance: Clean Screens & Clean Streams

Maintaining stormwater assets is imperative. Often out of sight, GPTs require routine inspection, cleaning, and maintenance to ensure they are performing optimally – and prevent costly failures or premature decommission.

The frequency of these maintenance schedules depends on several factors, including the size of the catchment, the volume of stormwater runoff, and pollutant load. Maintenance ensures peace of mind that your site. Not only are surrounding waterways protected from the detrimental impacts of untreated stormwater, but the service life of our stormwater assets is improved.

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