How do I decide between installing filters before stormwater enters the drainage network or down the line?
Capturing pollutants at source is an extremely efficient, and usually inexpensive, way of managing stormwater pollution. At-source treatment devices prevent gross pollutants from entering the drainage network and, therefore, reduce the likelihood of drain blockages. However, it is important to carefully consider the required cleaning frequency of the devices as this can add significantly to the whole-of-life cost. Depending on the expected pollutant loadings, and the number of required gully pits, specific to your project it may be more cost-effective to install a smaller in-line/end-of-line gross pollutant trap, such as the RSF 4200 (click here for more details).
