Stormwater harvesting system enhances harbour environment

Mosman Council, located on the foreshores of Sydney Harbour, recently installed a new stormwater harvesting system as part of its community environmental program.

The program involves a number of environmental projects, including a commitment to enhance the quality of stormwater discharged to Balmoral Beach.

STORM Consulting was commissioned to design a stormwater harvesting system to capture, filter, treat, store and re-use stormwater for irrigation, as well as enhance the quality of stormwater ultimately discharged to Balmoral Beach.

A Rocla CDS® P3018R gross pollutant trap (GPT) was approved by Mosman Council to provide pre-treatment for the storage and reuse system. The CDS® Unit, installed by Athassel Excavations, is connected to a main stormwater drain in Botanic Rd and is designed to treat flows up to the 3-month storm event.

Associated infrastructure downstream of the CDS® Unit supplies harvested stormwater for irrigation of landscaped areas adjacent to Balmoral Beach and nearby parklands.

Mosman Council's stormwater asset management plan includes continuous upgrades of infrastructure and ongoing installation of stormwater quality improvement devices to enhance the quality of coastal waters.