March 2023: Woongarra Balancing Storage Lagoon (Qld). Glyphosate
SunWater staff applied the herbicide (Weedmaster Duo Dual Salt Technology) to the Woongarra Balancing Storage Lagoon, which supplies the River Park WTP, to treat water lettuce. Spraying of the herbicide was done at allocation within the lagoon away from the WTP offtake point. Council operators emptied and flushed the plant treated water reservoirs. Water was trucked into the plant to supply the service area until the laboratory analysis results were received. Supply from the WTP was reinstated upon receipt of results below the ADWG limit for Glyphosate and Total Glyphosate. SunWater is to advise Council prior to the application of herbicide treatment to the water storage lagoons and irrigation channels. The investigation report for incident DWI-476-23-10168 was submitted to QWSR on 22/03/2023 and further information was provided on 12/09/2023.
Bundaberg Shire Council Drinking Water Quality Management Plan 2022/23