Carrizo-Wilcox Aquifer Water Supply Project
To address the long-term demands of population growth in our water service area, the City is looking to partner with EPCOR to secure additional raw-water supply. The City has entered into a two-year reservation agreement to negotiate a public-private partnership and a Water Supply Agreement, which will provide a plan to deliver water from the Carrizo-Wilcox Aquifer in Robertson County. The partnership contemplates Georgetown receiving about 32 million to 55 million gallons per day of treated groundwater (39,399-70,000-acre feet), with initial delivery by 2030.
The City of Georgetown faces unprecedented growth and demand for water, coupled with a finite surface water contract volume from the Brazos River Authority (BRA) and limited yield of local Edwards Aquifer groundwater. The population is rapidly growing in Central Texas, increasing competition for BRA surface water and groundwater supplies.
The City’s Integrated Water Resources Plan (IWRP) identifies new water supply options and ensures long-term reliability under uncertain water resources and demand growth. The IWRP, which was presented to council in December 2022, projects the City adding an average of 6,700 new water connections each year from 2024 through 2042 – nearly three times the projected new connections from the 2018 master plan (2,500). As such, the IWRP estimates the City will need to bring on new, raw-water supply by 2030 in order to keep up with demand.
The reservation agreement Council entered into with EPCOR on Aug. 9, 2023, provides a plan to deliver water from the Carrizo-Wilcox Aquifer in Robertson County. The partnership contemplates Georgetown receiving about 32 million to 55 million gallons per day of treated groundwater (39,399-70,000-acre feet), with initial delivery by 2030.
Glossary of Terms
- Acre foot: An acre foot of water is enough water to cover an acre of land 1-foot deep, or about 326,000 gallons. Put another way, an acre-foot of water is enough to flood a football field 1-foot deep. For reference to the Carrizo-Wilcox Aquifer waterline project, the original 39,339-acre feet of water amounts to 35.2 million gallons of water per day.
- Groundwater: Water that exists underground in saturated zones beneath the land surface. The upper surface of the saturated zone is called the water table. Contrary to popular belief, groundwater does not form underground rivers.
- Surface water: Water located on top of land, forming terrestrial waterbodies. The vast majority of surface water is produced by precipitation.
- Water transmission main: Moves significant quantities of treated water among service areas. The Carrizo-Wilcox Aquifer waterline project will construct an 80-plus-mile waterline to transport water from the Carrizo-Wilcox Aquifer to Georgetown.
- Fall 2022: Discussions with EPCOR began
- December 2022: Integrated Water Resources Plan presented to council
- May 2023: Team of experts established
- May-July 2023: Evaluation of reservation agreement
- Aug. 9, 2023: Two-year reservation agreement signed
- August 2023-January 2024: Discussion with regional partners on needs and contracts
- January-March 2024: Rate increase expected for customers to reflect two-year contract costs; specific rate increase figures will be determined and communicated in fall 2023
- July 2025: Council approval of water supply contract
Frequently Asked Questions