Kooringal Sewage Treatment Plant
“Wagga Wagga City Council operates a STP located at Vincent Road, Kooringal, approximately 8 km southeast of the CBD. The main objective of the plant is to treat sewage collected from the areas of Kooringal, Tatton, Lake Albert, and the pressure sewer from East Wagga and Gumly Gumly.
The treatment load primarily consists of domestic sewage with a light industrial area located within the sewer catchment. The first step in the process consists of screening and grit removal. Following these stages, the flow splits into two process streams for further treatment. Approximately 15% is treated through primary sedimentation, trickling filtration and secondary filtration. The remaining 85% passes through a newer treatment process and includes primary sedimentation, high rate trickling filtration, aeration and secondary sedimentation.
All effluent flows into tertiary ponds. Waste sludge is digested and held in two lagoons, where it is removed to landfill when required. The final effluent from the process is discharged into either the Murrumbidgee River via Marshall’s Creek or into the network of effluent reuse/irrigation projects administered by Council.” https://wagga.nsw.gov.au/services/stormwater-and-sewers/sewers/sewage-treatment
Kooringal Leachable Reporting 2019-2026
PFBA dominated PFAS detections in leachate.
Kooringal Biosolids
PFAS in biosolids at Kooringal are dominated by PFOS (58% of total).
PFAS content in biosolids at Kooringal is approximately half that of Narrung Street STP.
Comprehensive Investigation of Per- and Poly- Fluoroalkyl Substances (PFAS) at RAAF Base Wagga Department of Defence Detailed Site Investigation FINAL (Rev3) 5 June 2018 (Jacobs)
1.WAGGA Council Sewerage Treatment Plants
(a)Extract Page 51 Table 7.2: Results from NSW EPA sampling of treated effluent Council STP (Sewerage Treatment Plants)
Kooringal STP 3
6:2 FTS 0.021 ug/l
PFHpA 0.03 ug/l
PFHxA 0.030 ug/l
PFOA 0.03 ug/l