The proposed joint resolution seeks to amend the Texas Constitution to allow county commissioners courts the authority to exempt from ad valorem taxation the portion of a property’s assessed value that is linked to the installation of rainwater harvesting or graywater systems. This exemption would apply to all political subdivisions that impose property taxes. The amendment aims to encourage the adoption of sustainable water management practices by providing financial relief to property owners who invest in these environmentally friendly systems.

If approved, this constitutional amendment will be presented to voters during the election scheduled for November 4, 2025. The ballot will include a proposition allowing voters to express their support or opposition to the amendment, which is designed to promote water conservation efforts and enhance the sustainability of property development in Texas.