Md. Code, Local Government § 13–915

(a) This section applies to all counties except:

(1) Baltimore City;

(2) Baltimore County; and

(3) to the extent that an area is under the Washington Suburban

Sanitary Commission, Prince George’s County.

(b) The provisions of §§ 9–105 and 9–106 of this article apply to an act, an

ordinance, or a resolution adopted by a commission county under this section.

(c) In accordance with the Maryland Plumbing Act, the governing body of a

county may:

(1) adopt a plumbing code;

(2) provide for inspections to enforce the code; and

(3) impose permit and inspection fees.