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What is an Annual Environmental Review (AER)?

TasWater owns and operates 110 sewage treatment plants (STPs). 33 Level 1 STPs are regulated by local councils and 77 Level 2 STPs are regulated by the EPA. 

Annual performance and environmental management reporting in the form of an Annual Environmental Review (AER) is required under Permit and Environment Protection Notices (EPNs) for each Level 2 Sewage Treatment Plant. An AER allows TasWater to demonstrate they are monitoring the performance of the STPs, reviewing compliance, and exploring opportunities to improve environmental outcomes. 

TasWater has made these documents available to the public to ensure disclosure of STP performance and management information is clear and accurate. AERs are submitted annually to EPA Tasmania. 

Environmental Improvements in 2021-22 reporting period 

TasWater has continued to invest in sewerage infrastructure to improve environmental outcomes around the state. Key projects progressed in this years reported period include: 

• Longford STP upgrade and successful transfer of the domestic waste stream with the final aspects of the project due for completion during FY2022-23. 
• Completion of the Tullah STP outfall extension.
• Detailed design and approvals for Cygnet STP outfall, Geeveston STP outfall and Turriff Lodge STP outfall relocation projects.
• Completion of Cameron Bay STP digester and flare upgrade project. 
• Commencement of Queenstown STP remediation project. 
• Progress of design and approvals to decommission and relocate Macquarie Point STP to an upgraded Selfs Point STP. 
• Desludging of Oatlands, Legana and Bothwell STPs.