CRR Device Definitions

Biofiltration Basins (a.k.a. Bio-basins)

Bio-basins are landscaped vegetated basins used to slow and treat stormwater runoff. Stormwater is directed into the basin where the stormwater percolates downwards through almost a metre of loamy sand, removing pollutants (e.g. nutrients and heavy metals) through physical, chemical and biological processes, including filtration, plant uptake and microbial activity.

Gross Pollutant Traps

Gross pollutant traps can be nets, screens, racks or underground vaults that capture gross pollutants such as litter, organic matter and coarse sediment from stormwater runoff.

Stormwater Harvesting

Harvested stormwater is treated and stored for reuse in sports field irrigation. Stormwater harvesting collects runoff water from pipes and surface drains whereas rainwater harvesting collects water directly from roofs.