Regional Authorities and Special Districts - As enacted, makes revisions to the law relative to the Tennessee Duck River Development Agency. - Amends TCA Title 64, Chapter 1, Part 6.

This bill updates the laws governing the Tennessee Duck River Development Agency to establish a new fee system for water withdrawals. It defines "participating entities" as any group or business that takes water from the Duck River or its specific tributaries in four counties and requires a state permit. Under the new rules, these entities must pay a per-thousand-gallon withdrawal fee, which is calculated based on how much water they use and must be approved by an advisory committee. The collected funds are intended to cover the agency's operating costs and finance regional water supply projects, with the fee amount reviewed at least every two years.