Texas Proposition 4: Funding the future of water infrastructure

TEXAS (KTAL/KMSS) — On November 4, 2025, 17 constitutional amendments are on the ballot for Texas voters. Our ongoing series will explain what the amendments say, what they mean, why they are on the ballot, and the arguments for and against their passage.

This is not meant to be a comprehensive breakdown of these amendments; rather, it is an overview of the basics.

Overview

“The constitutional amendment to dedicate a portion of the revenue derived from state sales and use taxes to the Texas water fund and to provide for the allocation and use of that revenue.”

What it means

Proposition 4 would require the comptroller to allocate the first $1 billion of sales tax revenue after revenue exceeds $46.5 billion to the Texas Water Fund until 2047.

The funds would be placed in a separate account within the TWF and could not be used without an appropriation law.

Why is it on the ballot?

According to a report by Texas 2036, estimates suggest that the state will need nearly $154 billion by 2050 for water infrastructure. That includes $59 billion for water supply projects, $74 billion for infrastructure maintenance, and $21 billion to repair broken wastewater systems.

Supporters say

The amendment would provide predictable and sustainable funding to address the state’s water needs.

Inaction could negatively affect the quality of life for Texans going forward.

Texas is the eighth-largest economy in the world and is dealing with an influx of people. Investment is needed to keep pace with the state’s growth.

Investment now ensures water security in the future.

Opponents say

The funding is not enough to secure the state’s water supply.