§9–408.

    (a)    Except as provided in subsection (b) of this section, and subject to § 9-409 of this subtitle, State primary drinking water regulations shall apply to every public water system in this State.

    (b)    The State primary drinking water regulations do not apply to a public water system that:

        (1)    Consists only of distribution and storage facilities, and does not have any collection and treatment facilities;

        (2)    Obtains all of its water from, but is not owned or operated by, a public water system to which the State primary drinking water regulations apply;

        (3)    Does not sell water to any person; and

        (4)    Is not a carrier that conveys passengers in interstate commerce.