Austin Water plans 2028 indirect potable reuse project through Lady Bird Lake

The Austin Integrated Water Resource Planning Community Task Force has set its sights on a significant milestone: the target for indirect potable reuse (IPR) is now aimed for 2028. This ambitious timeline comes with critical discussions around budgetary and timing considerations that could impact the overall project.

During the meeting, officials highlighted the need to reassess the approach to water treatment facilities. Instead of merely expanding existing side stream treatment facilities, there is a push to consider comprehensive improvements at the South Austin Regional Wastewater Treatment Plant (SAR). This shift could lead to increased costs and a longer implementation timeline for the IPR project, which aims to enhance water quality and supply for the region.

The task force is currently evaluating various configurations for the IPR strategy, including the integration of water from Lady Bird Lake. Engineering consultants are actively involved in assessing the necessary infrastructure, including the construction of a water treatment plant and the routing of reclaimed water transmission lines. These developments are crucial for meeting water quality standards and ensuring the safe discharge of treated water into local bodies.

Coordination with other departments, such as Watershed Protection and Austin Energy, is ongoing to address water quality modeling and lake level maintenance, especially during drought conditions. The task force is also exploring the feasibility of direct potable reuse as an emergency supply strategy, responding to community interest in alternative water sources.

As the planning progresses, the task force anticipates delivering a feasibility report on the various IPR options by early fall. This report will inform decisions on prioritizing supply strategies for near-term implementation, ensuring that Austin is prepared to meet its water needs sustainably and effectively.