You are here

Home » State Human Resources » Compensation & job classes » Classified Job Listing » » State of Washington Class Specification

State of Washington Classified Job Specification


<< Classified Job Listing

Class Code: 602T
Category: Maintenance Trades & Labor


As a certified Group 1 wastewater treatment plant operator, operates and maintains a Class 1 wastewater treatment plant at an institution or serves as a backup for a Wastewater Treatment Plant Operator 2.

Typical Work

Operates, adjusts and regulates chemical feed machines, chlorinators, sludge digestion pumps, and flow meters; breaks up sludge in gas chambers;

Makes prescribed tests such as tests for hydrogen-ion concentrates, oxygen demand and settlable solids;

Cleans bar screens and filter beds; cleans grit from grit chamber; washes down tanks and chambers;

Records gauge and meter readings; keeps operational records;

Lubricates and maintains motors, pumps and heat exchangers;

Maintains buildings and adjacent grounds;

Supervises and instructs helpers, patients or residents;

Performs other work as required.

Knowledge and Abilities

Knowledge of: principles of operation and maintenance requirements of sewage treatment plant machinery and equipment; chemical and physical tests required for safe and efficient operation of sewage treatment plant; tools and equipment used in maintaining sewage treatment plant equipment.

Ability to: make accurate readings; keep operation records; establish and maintain cooperative working relationships with others.

Legal Requirement(s)

Incumbents in some positions in this class will be required to obtain and maintain a Water Distribution Manager 2 Certificate of Competency issued by the Department of Health. This Certificate of Competency is required by the Safe Drinking Water Act.

Desirable Qualifications

Certification by Department of Ecology as a Group 1 wastewater treatment plant operator.

Note: Classification of the wastewater treatment plant will be determined by the Department of Ecology.

Class Specification History

Revise class. Revises title (formerly Sewage Plant Operator), definition, minimum qualifications; adopted May 21, 1973.
Revise class. Revises minimum qualifications; adopted February 17, 1978.
Revise class. Revises minimum qualifications; adopted February 10, 1989.
Revise class. Revises title (formerly Waste Treatment Plant Operator 1), definition, minimum qualifications; adopted June 10, 1999.
Revise class. Revises class code (formerly 75400), general revision; adopted May 10, 2007, effective July 1, 2007.