III and IV PWSs shall have an operator with certification no lower than one (1) class below the system classification
present in the primary treatment
facility at all times when the plant is operational.
II, III and IV PWSs shall have at least one (1) certified operator (except 1D, Class R or WD level) in addition to
the Chief Operator, unless the
Commissioner grants a written exception to this requirement in response to a written request by the
owner of the PWS.All exceptions granted will be individual
and system specific (not
transferable) and may be rescinded immediately if compliance concerns arise.