Md. Code, Public Utilities § 24-201

(a) (1) In this section, “sewer cleaning” means the cleaning or clearing of and the removal of stoppages or obstructions in sanitary sewer lines, pipes, and fixtures.

(2) “Sewer cleaning” does not include any installation, maintenance, extension, removal, or alteration of any pipe, sanitary fixture, or other sewer apparatus.

(b) This section may not be construed to:

(1) require a person to have a sewer cleaner’s license to clean a sewer on the person’s own property;

(2) prevent a person from cleaning a sewer on the person’s own property; or

(3) apply to or prohibit the cleaning by any person of a sewer or sanitary fixture of any dwelling, commercial or industrial establishment, or premises owned or operated by the person.

(c) The Commission shall adopt and enforce regulations governing sewer cleaning in sanitary sewer lines, pipes, and fixtures connected to the Commission’s sanitary sewer system.

(d) (1) (i) To qualify for a sewer cleaner’s license, a person need not be a master plumber.

(ii) A sewer cleaner’s license does not authorize the licensee to engage in the plumbing business other than sewer cleaning.

(2) The Commission:

(i) shall require that a person other than a licensed master plumber who is engaged in or represents the person to the public as engaged in sewer cleaning be licensed by the Commission;

(ii) may require a bond of the licensee to insure compliance with and adherence to the regulations adopted by the Commission;

(iii) may establish qualifications and examine applicants concerning their competency and qualifications for a license under this section; and

(iv) may require a reasonable fee for the issuance and renewal of a license in an amount not more than one–half of the fee charged for a master plumber’s license.