THE Water Corporation has apologised to Craigie residents for an unpleasant smell emanating from its wastewater treatment plant.
A Times reader noticed the “rancid” odour in late June at a popular exercise spot in bushland south of the site and had not returned because of the smell.
Spokeswoman Clare Lugar attributed it to a fault in the Beenyup Wastewater Treatment Plant’s digester process.
“The digesters take the sludge from the wastewater treatment process and use bacteria to break it down,” she said.
“Biogas is produced in the digesters during this process, and valves ensure the gas is released at set pressure points.
“Due to a fault in the process, more biogas than usual is being released via these valves.”
But residents are not expected to gain relief for several months as customised parts are required from overseas.
Ms Lugar said they expected repairs to be completed by the end of October.
“In the interim, Water Corporation has made changes to optimise the plant to reduce the amount of biogas being released,” she said.
The organisation has apologised for the issue and distributed an information sheet to 1800 nearby residents.
People are encouraged to report odours to the 24-hour faults line on 13 13 75.