Austin Water is currently in the final design and permitting phases for the Williamson Creek Wastewater Interceptor project. Construction is projected to begin in early 2025 and anticipated to be fully constructed by 2030. Staff from the City of Austin's Capital Delivery Services Department and Austin Water are continuing to meet with neighbors in the project vicinity to discuss the project purpose and scope, as well as potential local impacts.
Project Scope
- Installation of approximately 19,000 feet of a 72-inch diameter gravity interceptor pipeline along Williamson Creek from South First St. to Pleasant Valley Rd via tunneling construction method.
- Replacement of multiple existing 8-inch to 36-inch local wastewater pipelines to divert and reconnect the wastewater flows to the new 72-inch diameter interceptor pipeline.
- The new interceptor will remove as much of the existing 36-inch and 48-inch line from service as possible and also increase capacity in the sewer system to convey wastewater flows safely to the South Austin Regional Wastewater Treatment Plant.
Project Area
The project area is located in south and southeast Austin near Onion Creek and William Cannon Drive and continues northwest along Williamson Creek to the existing interceptor at South First Street.
Project Timeline:
Design and permitting phase: Fall 2017 to Summer 2024
Advertisement phase: Fall 2024 to Spring 2025
Construction phase: Spring 2025 to 2030
Communications
Sign-up to receive updates and notification about the project at this link.
Upcoming Meetings
In 2024, City staff will schedule meetings with neighborhood groups and continue to send out project information.
Past Meetings
Nov. 13, 2017, 6:30 – 7:30 p.m.
Dove Springs Recreation Center
5801 Ainez Dr, Austin, TX 78744 (map)
Nov. 15, 2017, 6:00 – 7:00 p.m.
Pleasant Hill Library
211 E William Cannon Dr, Austin, TX 78745 (map)
Contacts
Craig McColloch, Project Manager
Public Works
512-749-3412
Email Craig
Emlea Chanslor, Public Information
Austin Water
512-972-0145
Email Emlea