The Ullrich Water Treatment Plant was built in 1969 and has a rated design treatment capacity of 167 million gallons per day (MGD). The plant is a conventional lime softening design, with up-flow solids contact reactor type clarifiers, gravity filters, clear well storage, and has raw water and finished water pumping stations. The plant has undergone a number of expansions and renovations over the years. It was expanded to its current treatment capacity in 2006. Ullrich Water Treatment Plant is one of three water treatment plants serving Austin Water customers and it is the largest in treatment capacity.

The American Water Work’s Association has recognized Ullrich Water Treatment Plant with the President’s Award from the Partnership for Safe Water. This prestigious award has been given to an elite group of 30 plants across the country. The award honors the performance of a plant’s filters, which play a key role in filtering out harmful bacteria.


Austin Water is planning improvements to the Ullrich Water Treatment Plant. The projects will bring process enhancements to the plant. Austin Water’s Capital Improvement Plan does not include plans to expand the current rated capacity of the plant, which is currently 167 million gallons per day. A list of projects in the 5-year Capital Improvement Plan for Ullrich Water Treatment Plant as of July 2020 is provided for reference. The projects will be constructed on the current site and are planned within the current fence line.

In September 2021, Austin Water, in collaboration with the Austin Fire Department, is beginning a wildfire mitigation project on land surrounding the Ullrich Water Treatment Plant. Learn more about the project here. View the map here. 


Community Meetings

Past Meetings
  • August 20, 2020 - Ullrich Water Treatment Plant Online Community Meeting
  • May 13, 2021 - Ullrich Water Treatment Plant Online Community Meeting
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Community Outreach Contact

Emlea Chanslor
Austin Water
512-972-0145 office