|(a) To protect the health and safety of the citizens
of this state, the Board adopts the following plumbing codes:
(1) the 2018 Uniform Plumbing Code, as published by
the International Association of Plumbing and Mechanical Officials;
(2) The 2018 International Plumbing Code, as published
by the International Code Council and the codes incorporated by reference
within the 2018 International Plumbing Code, including:
(A) the 2018 International Fuel Gas Code; and
(B) the 2018 International Residential Code.
(b) To ensure the proper design, installation, and
maintenance of plumbing systems within its jurisdiction, a political
subdivision may adopt a plumbing code with any amendments necessary
to address local concerns provided that the amendments do not substantially
vary with the rules or laws of this state.
(c) Plumbing must be installed in accordance with all
applicable plumbing codes adopted by the political subdivision in
which the plumbing is being installed.
(1) Plumbing installed by an individual licensed under
the PLL in an unincorporated area of the county or other area where
no plumbing code has been adopted must be installed in accordance
with a plumbing code adopted under subsection (a) of this section.
(2) A plumbing installation that was started prior
to the Board's adoption of the plumbing codes listed in subsection
(a) of this section may be completed under the requirements of the
codes in effect at the time permits for the installation were issued
or work on the installation commenced.
(3) In addition to all applicable plumbing codes, Liquefied
Petroleum Gas (LP-Gas) piping must be installed in accordance with
all applicable rules adopted by the Texas Railroad Commission.
(d) Any piping connecting a plumbing fixture, including
a water closet, to a potable water supply shall be installed to prevent
the back flow of nonpotable substances into the potable water system
in accordance with the applicable plumbing code and state laws. Water
closet fill valves (ball cocks) shall be of the antisiphon, integral
vacuum breaker type with the critical level (the air inlet portion
of the vacuum breaker) installed at least one (1) inch above the flood
level rim of the fixture (the inlet of the water closet overflow tube).
(e) Plumbing installed in compliance with a code adopted
under subsection (a) or (b) of this section must be inspected by a
Plumbing Inspector licensed under the PLL and Board Rule §367.4
of this title (relating to Standards of Conduct - Plumbing Inspectors).
(f) A licensee or registrant shall not install, and
a person shall not require a licensee or registrant to install, plumbing
that is not in compliance with the Plumbing License Law or any other
laws of this state, Board Rules, or any applicable plumbing codes.