Amend the House Committee Substitute for SB 312 on third reading by inserting the following new SECTION 28 between lines 17 and 18 on page 31 of the committee substitute to read as follows, and renumbering the subsequent sections accordingly: SECTION 28. Section 36.001, Water Code, is amended by inserting a new Subdivision (18) to read as follows: (18) "Public water supply well" means, for purposes of a district governed by this chapter, a well that produces the majority of its water for use by a public water system.