Sec. 123.002. EXCEPTION. This subchapter does not apply to the extent that the supply of natural gas is required to maintain natural gas service for:

(1) use by residential users or hospitals; or

(2) an analogous use that is vital to public health and safety.

Acts 1997, 75th Leg., ch. 166, Sec. 1, eff. Sept. 1, 1997.