Tex. Water Code § 55.523: ISSUING REFUNDING BONDS WHICH PLACE A GREATER BURDEN ON THE DISTRICT.

If the district issues refunding bonds for a greater amount, for a greater rate of interest, or for a longer period of maturity than the bonds which they are to replace or if the refunding bonds in any other respect create a greater burden on the district, the district shall submit the question of whether or not it should issue the refunding bonds to the voters of the district.

Acts 1971, 62nd Leg., p. 471, ch. 58, Sec. 1, eff. Aug. 30, 1971.