Who Must be Certified

Certified employees

Maryland law (COMAR and certification regulations require that all operators and superintendents of facilities be certified and defined as “operator” and /or “superintendent.” 

Please view the full PDF of "Who Must Be Certified" for more information.

Who Must Be Certified (PDF)


Please note the following updates in fees for operator applications and examinations.

Examination fee $50
Application fee for a temporary, operator or superintendent certificate $50
Renewal for the first certificate $50
Renewal fee for each additional certification category is $50 each, with a cap of $100 during any 3 year renewal.
Contact with questions? Call the MDE Board ofWaterworks andWaste Systems Operators at (410) 537-3167