Texas water, wastewater projects poised for major boost under new funding amendment

Texas is positioning itself for the largest long-term water infrastructure investment in state history following voter approval of Proposition 4 in November 2025. According to Longview News-Journal, the measure amends the state constitution to dedicate up to $1 billion annually in sales tax revenue to the Texas Water Fund from 2027 through 2047, potentially providing nearly $20 billion to support water supply, wastewater and flood infrastructure projects statewide.

Under the plan, funds will be appropriated by the Legislature and administered by the Texas Water Development Board, with allocations beginning no earlier than the 2029 legislative session, Longview News-Journal reported. By law, at least half of the funding must support the State Water Implementation Fund of Texas and the New Water Supply for Texas Fund, prioritizing projects that expand long-term water availability amid rapid population and economic growth.

While the dedicated funding will not take effect for several years, lawmakers have already approved more than $2.5 billion in interim water infrastructure funding—the largest one-time water appropriation in Texas history. State officials say the coming years will focus on updating long-term water and flood plans, refining permitting and financing processes, and preparing utilities and districts to deploy the historic investment once funds become available.

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