HB 27 imposes a temporary moratorium on the issuance of new permits or amendments by the Neches and Trinity Valleys Groundwater Conservation District (NTVGCD) for the production and export of groundwater outside the district. The moratorium remains in effect until 270 days after the Texas Water Development Board (TWDB) submits a mandated study evaluating the district’s groundwater resources and the projected impacts of groundwater transfers.
The legislation directs the TWDB to conduct a comprehensive analysis that includes: (1) the maximum sustainable annual groundwater yield from aquifers within the district; (2) a comparison of that yield to the modeled available groundwater previously determined; and (3) an assessment of hydrological impacts from both existing and proposed groundwater production and transfers. The assessment must consider recharge rates, surface water interaction, spring flows, and other relevant environmental indicators. The study is due no later than January 12, 2027.
While the moratorium is active, the district is prohibited from issuing new permits or amendments that authorize the production and transfer of groundwater for use outside the district. However, permits issued prior to the effective date of the bill are not affected. The bill includes a sunset clause, expiring automatically on November 1, 2027. HB 27 reflects an effort to align local water management decisions with long-term sustainability goals and scientific analysis before permitting further groundwater exports.
The Committee Substitute for HB 27 significantly expands and clarifies the provisions outlined in the originally filed version of the bill. While the original bill imposed a flat moratorium on the issuance of new or amended permits by the NTVGCD for the export of groundwater, the substitute adds important procedural context and limitations. Specifically, the original version prohibited all new export permits without exception through September 1, 2027, and provided only a general mandate for the TWDB to conduct a study focused on whether groundwater transfers would impede modeled available groundwater levels.
In contrast, the substitute version builds a more detailed framework for the TWDB’s study, requiring the agency not only to analyze sustainable production volumes but also to compare those results with previously modeled available groundwater (MAG) and to assess the hydrological impacts of pending and proposed transfers. This includes consideration of recharge, inflows, discharges, and surface water-groundwater interactions, factors not addressed in the original filing. These additions create a more holistic and science-driven basis for evaluating groundwater impacts.
Moreover, the substitute links the duration of the moratorium directly to the TWDB's reporting schedule. Instead of a fixed end date, the moratorium now lifts 270 days after the TWDB submits its report (due by January 12, 2027), allowing stakeholders time to digest and act on the findings. The expiration date of the legislation is also extended to November 1, 2027, to accommodate that adjusted timeline. Additionally, the substitute clarifies that the moratorium applies only to permits issued after the bill's effective date, thereby preserving existing permit rights, a provision not clearly stated in the original bill.
Overall, the substitute transforms HB 27 from a blunt policy tool into a more tailored, procedural approach. It balances local concerns about groundwater exports with procedural fairness and scientific analysis, adding specificity and accountability absent from the original filing.