(a) In this section, “hydrant” means:
(1) a fire hydrant; or
(2) a metal flush valve that:
(A) has the appearance of a fire hydrant; and
(B) is located in a place that an entity responsible for providing fire suppression services in a fire emergency would expect a fire hydrant to typically be located.
(b) This section applies only to a county, or a municipality in a county, that:
(1) borders the United Mexican States or is adjacent to a county that borders the United Mexican States;
(2) has a population of at least 400,000 or has a population of at least 20,000 and is adjacent to a county that has a population of at least 400,000; and
(3) is within 200 miles of the Gulf of Mexico.

(c) Each public water system responsible for any hydrant shall:
(1) paint all or the cap of the hydrant white if the hydrant is available to be used only to fill a water tank on a fire truck used for fire suppression services; and
(2) paint all or the cap of the hydrant black if the hydrant is unavailable for use by the entity providing fire suppression services in a fire emergency.
(d) For purposes of Subsection (c)(2), a hydrant is unavailable for use in a fire emergency if it is unavailable for pumping directly from the hydrant or is unavailable for use in filling a water tank on a fire truck used for fire suppression services.
(e) A public water system may place a black tarp over the hydrant or use another means to conceal the hydrant instead of painting all or the cap of the hydrant black as required under Subsection (c)(2) if the hydrant is temporarily unavailable for use in a fire emergency for a period not to exceed 45 days. Not later than the 45th day after the date a hydrant is concealed as provided by this subsection, the public water system responsible for the hydrant shall:
(1) if the hydrant is available for the provision of fire suppression services, remove the tarp or other means of concealment; or
(2) if the hydrant continues to be unavailable for use in a fire emergency, paint all or the cap of the hydrant black as required by Subsection (c)(2).
(f) A public water system that paints all or the cap of a hydrant black as required by Subsection (c)(2) may also ensure by any reasonable means that the hydrant is identifiable in low-light conditions, including by installing reflectors.
(g) This section does not apply:
(1) within the jurisdiction of a governmental entity that maintains its own system for labeling or color coding its hydrants; or
(2) to any public water system that has entered into a contract with a municipality or volunteer fire department to provide a water supply for fire suppression services if the contract specifies a different system for labeling or color coding hydrants.
(h) For purposes of Subsection (g), a system for labeling or color coding hydrants may include the assignment of different colors to identify hydrants that are available for direct pumping, hydrants that are available for filling a water tank on a fire truck used for fire suppression services, and hydrants that are unavailable for use by an entity providing fire suppression services in a fire emergency.
(i) The fact that all or the cap of a hydrant for which a public water system is responsible under this section is not painted black as described by Subsection (c)(2) or concealed in the manner described by Subsection (e) does not constitute a guarantee by the public water system that the hydrant will deliver a certain amount of water flow at all times. Notwithstanding any provision of Chapter 101, Civil Practice and Remedies Code, to the contrary, a public water system is not liable for a hydrant’s inability to provide adequate water supply in a fire emergency.