On most days, turning on the tap in Round Rock is something people don’t think twice about. And that’s exactly how city leaders want it to stay—even as the community continues to grow.
That’s why Round Rock is investing $46 million into expanding a regional water treatment plant shared with Cedar Park and Leander. City Council recently approved a construction contract that will nearly double the plant’s capacity, helping ensure enough treated drinking water for years to come.
The facility, located in Cedar Park, is part of the Brushy Creek Regional Utility Authority, a partnership that allows neighboring cities to share water infrastructure instead of each building their own systems. Today, the plant can treat about 41.9 million gallons of water per day. After the expansion, that number will rise to 64.2 million gallons per day, with the added capacity divided among the three cities.
For Round Rock, that’s a significant boost. The city’s share of treated water will increase from 11.2 million gallons per day to 21.8 million gallons per day, nearly doubling what’s available to serve homes, schools, businesses, and growing neighborhoods.
Why does this matter? Because growth doesn’t just mean more rooftops—it means more daily demand, especially during hot Texas summers. Planning ahead helps prevent shortages, keeps water pressure steady, and supports new development without overloading the system. It also benefits nearby municipal utility districts that rely on Round Rock for wholesale water service.
This expansion unlocks more than capacity—it provides flexibility. With strong regional partnerships already in place for both water and wastewater treatment, cities across northern Williamson County can grow together instead of competing for resources.
It’s one of those behind-the-scenes investments most people will never see—but it plays a quiet, essential role in keeping Round Rock moving forward, one glass of water at a time.
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