The City of Austin has officially broken ground on a major overhaul of one of its most critical infrastructure facilities, launching a $1.5 billion expansion and modernization of the Walnut Creek Wastewater Treatment Plant.
City leaders say the project is designed to accommodate Austin’s rapid population growth while improving environmental protections and long-term system reliability. The Walnut Creek facility, located in northeast Austin, is one of the city’s largest wastewater treatment plants and plays a key role in processing millions of gallons of wastewater each day.
Currently, the Walnut Creek Wastewater Treatment Plant serves more than 50% of Austin and operates at a treatment capacity of 75 million gallons per day. Through this expansion, that capacity will increase to 100 million gallons per day.
“This generational investment to expand and modernize the Walnut Creek Wastewater Treatment Plant is about taking care of Austin,” said Austin Mayor Kirk Watson. “We’re making improvements to keep these essential services strong and building a future we can count on.”
According to Austin Water, the upgrades will significantly increase treatment capacity and incorporate newer technology aimed at improving water quality before it is returned to local waterways. Officials say the project will also help the city meet stricter state and federal environmental regulations in the years ahead.
The expansion comes as Austin continues to see sustained growth, putting increased pressure on aging infrastructure systems. City leaders say the investment is necessary to ensure the wastewater system can keep up with demand while avoiding potential service disruptions.
“Today’s groundbreaking marks an important milestone in securing vital City Services, while energizing economic development and creating jobs,” said Mike Rogers, Assistant City Manager. “These are the types of jobs envisioned and created by the Austin Infrastructure Academy, a local coalition of partners in government, education and business who are growing Austin’s workforce and providing opportunities for advancement, training and competitive compensation for workers who are building, operating and maintaining our critical infrastructure.”
In addition to boosting capacity, the project is expected to include improvements to odor control, energy efficiency, and system resiliency during extreme weather events—an increasing concern following recent winter storms and flooding issues across Central Texas.
Construction is expected to take several years, with city officials emphasizing that the long-term benefits outweigh the short-term disruptions that nearby residents may experience.
This expansion project will be funded through a combination of federal and state low-interest loans, including up to $1 billion from the U.S. Environmental Protection Agency’s (EPA) Water Infrastructure Finance and Innovation Act (WIFIA) program and $59 million from the Texas Water Development Board Clean Water State Revolving Fund program, along with Austin Water’s funding.
Once completed, officials say the upgraded Walnut Creek facility will be better equipped to serve Austin’s growing population, which is projected to reach 1.5 million by 2040.
