Relating to a groundwater study of certain aquifers underlying the territory of the Neches and Trinity Valleys Groundwater Conservation District by the Texas Water Development Board before the issuance of permits or permit amendments by the district.

HB 27 requires the Texas Water Development Board to study groundwater sustainability in the Neches and Trinity Valleys Groundwater Conservation District. The study must determine the maximum annual groundwater production without harming the aquifer's modeled available water and assess impacts on local water flows. The bill imposes a temporary moratorium on new permits or permit amendments for groundwater transfer out of the district until the study report is submitted by January 12, 2027. This moratorium applies only to the Neches and Trinity Valleys District and expires on September 1, 2027. The bill directly affects groundwater permit applicants and the district's permitting authority.