D.C. Mun. Regs. tit. 21, r. 21-1808
Except in accordance with §§ 1808.3 and 1808.4, no person shall construct, maintain, or abandon a well within the District unless that person is a licensed well driller and possesses a current Department of Consumer and Regulatory Affairs business license.
A well owner shall ensure the construction, maintenance, and abandonment of a well is performed under the direct supervision of a licensed well driller.
A licensed well driller shall not be required for the construction of a well using hand operated or hand driven tools, including hand-augers, soil probes, and hand shovels.
A licensed well driller shall not be required for the maintenance of a well, provided that the maintenance does not require the application of chemical treatment, the maintenance of an installed pump, or a material change in the original permitted design, specification, or construction of the well.
D.C. Mun. Regs. tit. 21, r. 21-1808