Markets, Stormwater, Wastewater, Water

Logan City Council on a pipe inspection mission

The program will look for pipe defects and illegal connections that allow stormwater to infiltrate the city’s wastewater network during heavy rainfall events.

Work will commence on 23 December 2015 and will include the use of smoke, dye and CCTV inspection.

The city’s current underground water infrastructure includes a wastewater network, designed to collect and treat the wastewater from homes and businesses, and a separate stormwater network, which collects the runoff from streets and houses to be discharged into nearby creeks and rivers.

Local councillor Don Peterson said “In a perfect system, the two networks would be completely separate, but unfortunately, stormwater enters the wastewater network due to defective, improper or illegal connections, with up to 70 per cent of the inflow coming from residential connections.”

While it is possible to moderate the network, extreme weather events make this more difficult and the Rochedale South area has seen an increase in the wastewater overflows as a result.

Mr Peterson said “The network becomes overwhelmed by the stormwater inflow and wastewater overflows can happen, mostly in a way that we can manage, but sometimes the overflows will occur on residents’ properties, and that’s not ideal.”

As well as residents’ properties, the Logan City Council has identified several catchments that regularly experience overflow events, isolating the problems to parts of the city with older infrastructure.

The Roads and Water Infrastructure Committee hopes that by identifying and eliminating network defects, the number of wastewater overflows will be significantly reduced.

For more information visit the Logan City Council website.

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