Section 6023 - Licensing of water well contractors, pump installer contractors, drillers, drivers, pump installers, septic tank installers, liquid waste treatment plant operators and liquid waste haulers(a) No person shall: (1) Engage in the drilling, boring, coring, driving, digging, construction, installation, removal or repair of a water well or water test well; or(2) Install, maintain or repair pumping equipment in or from a well without a license issued by the Department, except (i) as, or under the supervision of, a licensed plumber, or (ii) an agricultural well on land owned or leased by the person installing, maintaining or repairing the pumping equipment. For the purpose of this paragraph "agricultural well" shall mean a well used for irrigation of crops, for the watering of livestock or poultry, for aquaculture uses, or for other on-farm purposes where the water is not to be used for human consumption or to service a residential dwelling.(b) No person shall engaged in the construction, repair, installation or replacement of a septic tank system or any part thereof except as or under the supervision of a licensed septic tank installer.(c) No person shall operate any liquid waste treatment system without a duly licensed liquid waste treatment plant operator.(d) No person shall haul, convey or transport any liquid waste in any container without a license issued by the Department.(e) Any person requiring a license for any activity specified in subsections (a)-(d) of this section shall file an application with the Secretary in such form and accompanied by such information as the Secretary may require by regulation.(f) The Secretary shall have the exclusive power to grant or deny any license required under subsections (a), (b), (c) and (d) of this section. The Secretary shall adopt regulations setting forth requirements, including an acceptable performance or an examination for obtaining and retaining any such license.7 Del. C. 1953, § 6023; 59 Del. Laws, c. 212, § 1; 59 Del. Laws, c. 537, § 15; 60 Del. Laws, c. 288, § 3; 64 Del. Laws, c. 472, §2; 71 Del. Laws, c. 187, § 1.;