Sec. 46.30.060. - Certification.
The department shall issue certification entitling those persons who successfully complete the required examinations to supervise the operation of potable water supply and wastewater systems and facilities after considering the recommendations of the advisory board. The certificate must designate the class of system for which the operator is qualified in accordance with the classification system of the department. The certificate shall be valid for three years unless revoked for cause or replaced by one of a higher grade.