On Oct. 20, the city councils of San Marcos, Kyle and Buda each approved contract revenue bonds to fund the Alliance Regional Water Authority’s (ARWA) Carrizo Expansion Project. The joint effort will increase water availability for the three communities by tapping the Carrizo‑Wilcox Aquifer and expanding treatment infrastructure.

Project details and timeline

The Carrizo Expansion includes a water‑treatment plant upgrade, clarification improvements, a new booster‑pump station, raw‑water pipelines and expanded solids‑handling facilities. Seven new wells will be drilled into the Carrizo‑Wilcox Aquifer to draw additional water. ARWA’s board approved contracts for the plant, pump station and raw‑water work in early August, and the project is slated for substantial completion by January 2029.

Water gains for each city

According to the council agendas, the anticipated water increases are:

• San Marcos: an additional 2,917 acre‑feet per year, about 2,603,829 gallons per day.
• Kyle: an additional 2,292 acre‑feet per year, about 2,045,929 gallons per day.
• Buda: an additional 413 acre‑feet per year, about 368,660 gallons per day.

The bond amounts each city authorized reflect the volume of water they will receive. The Guadalupe‑Blanco River Authority will cover the funding shortfall between the total project cost and ARWA’s share.

Why the expansion matters

Rapid growth in Central Texas has placed increasing demand on existing water supplies. By expanding the Carrizo‑Wilcox Aquifer’s contribution, the three cities are taking proactive steps to ensure reliable, affordable water for families, businesses and future development. The project also supports regional cooperation, a hallmark of responsible local governance.

Community impact

Residents can expect more stable water rates and reduced reliance on distant sources. The added capacity will help accommodate new housing, commercial projects and agricultural needs while preserving the quality of the water delivered to homes.

Next steps

Construction will begin later this year, with the first well‑drilling slated for early 2027. The cities will continue to monitor progress and keep the public informed through regular updates at council meetings and on ARWA’s website.

Original reporting: Community Impact — Austin — read the source article.