Maryland Environment Section 12-501

      (a)      A person or municipal or private corporation may not operate a waterworks, wastewater works, or industrial wastewater works unless the facility is under the responsible charge of a certified superintendent.

      (b)      After July 1, 1982, a person or municipal or private corporation may not operate a waterworks or wastewater works unless all operators in the waterworks or wastewater works are certified operators.

      (c)      After July 1, 1982, a person or municipal or private corporation may not operate an industrial wastewater works unless all industrial operators in the industrial wastewater works are certified industrial operators.