Relating to the volume of groundwater production authorized through the issuance of permits by a groundwater conservation district.

HB 290 requires Texas groundwater conservation districts to ensure new water permits do not cause total groundwater production (including existing exempt use) to exceed the scientifically modeled sustainable supply. Districts must base permit authorizations on the executive administrator's calculated "modeled available groundwater" volume. This directly affects groundwater conservation districts that issue permits, preventing them from authorizing overuse that would hinder achieving designated water sustainability goals. The bill takes effect 91 days after the legislative session ends.