(UI) — Texas voters have approved a $20 billion statewide investment to modernize water infrastructure, repair aging systems, and expand future water supplies under Proposition 4 — one of the largest water funding measures in state history.

The ballot initiative establishes $1 billion in annual funding for the next 20 years, supporting new supply projects, pipeline and treatment plant upgrades, and conservation technology across both rural and urban communities.

“Texas can’t afford to waste water — or time,” said Jennifer Walker, special advisor to the National Wildlife Federation’s Action Fund. “Investing in our water infrastructure now means fewer leaks, safer drinking water, conservation of natural resources, and a stronger economy that can support families and communities for decades. Today’s vote shows that Texans across the political spectrum understand the stakes and are ready to invest in solutions that will protect our water for generations.”

The measure gained strong bipartisan support, with backing from utilities, conservation groups, and business leaders who cited the state’s growing population and frequent droughts as critical motivators.

“Water isn’t just about turning on the tap. It’s about healthy rivers and wetlands, thriving wildlife habitats, and resilient ecosystems that support Texas’ outdoor heritage,” said Vanessa Puig-Williams, senior director of the Environmental Defense Fund’s Texas Water Program. “Our campaign brought together state leaders across the political spectrum along with urban and rural voices — all united around the common-sense need to secure Texas’ water future.”

The funding will help communities replace aging pipes, repair treatment plants, and build new systems to reduce leaks and increase drought resilience. Texas’s population is projected to nearly double by 2050, putting additional pressure on existing infrastructure.

Environmental Defense Fund Action and the National Wildlife Federation Action Fund jointly invested $700,000 in outreach and education to build support for the measure, which they describe as a “turning point” for Texas water security.