Maryland Code, Public Utilities § 17-406

(1) erosion and sediment control for utility construction under authority of § 17-403 of this subtitle and § 4-105 of the Environment Article, after review and approval of the proposed regulations by the soil conservation districts of Montgomery County and Prince George's County and the Department of Natural Resources;

(2) sewer cleaning under authority of § 24-201 of this article;

(3) plumbing under authority of § 17-403 of this subtitle and §§ 24-106, 26-102, and 26-204 of this article;

(4) gas fitting under authority of § 17-404 of this subtitle;

(5) required permits for public utility construction under authority of §§ 27-101 and 27-107 of this article; and

(6) the Commission Pretreatment Program under authority of § 17-403 of this subtitle and § 9-332 of the Environment Article.

(b)(1) The Commission shall publish the regulations as provided under § 17-403(b) of this subtitle.

(2) The sworn certificate of a commissioner as to the publication of the regulations is prima facie evidence of publication.