Amend CSSB 1 by adding the following appropriately numbered section and renumbering the subsequent sections appropriately: SECTION ___. Subchapter L, Chapter 51, Water Code, is amended by adding Section 51.534 to read as follows: Sec. 51.534. ADDITION OF LAND SUBJECT TO WATER QUALITY PLAN TO DEFINED AREA. The procedures of Section 49.301 may be used to add land to a defined area created under this subchapter. The land must be included in the district and subject to a water quality plan approved by the commission but is not required to be contiguous to the defined area.