Except as provided in §B of this regulation, a person may not practice well drilling or represent to the public that the person is authorized to practice well drilling in this State unless that person is licensed by the Board. Exceptions. An individual authorized to provide plumbing services as a master plumber in the State may install or repair a water pump, a water tank, or water conditioning equipment without a license from the Board. An individual employed by an agency of the federal government or this State may practice well drilling while performing the duties of that employment.