Wastewater Treatment Plant Operator 2 pay range
State of Washington · class code 602U
- Class code
- 602U
- Salary range
- 54E
- Pay unit
- Year
- State
- Washington
- The State of Washington published pay range for Wastewater Treatment Plant Operator 2 is $67,704 to $82,440 per year.
- Washington State Office of Financial Management (OFM) keys this classification as class code 602U.
- This is the range the plan authorises, not the salary of any individual employee.
Step progression
Washington State Office of Financial Management (OFM) assigns this class to salary range 54E in the General Service Salary Schedule. The range pays 9 steps, and this class starts at step E rather than at the bottom of the range; a step is normally earned on a periodic increment date, not negotiated.
| Basis | E | F | G | H | I | J | K | L | M |
|---|---|---|---|---|---|---|---|---|---|
| Annual | $67,704 | $69,348 | $71,136 | $72,900 | $74,748 | $76,608 | $78,504 | $80,496 | $82,440 |
| Monthly | $5,642 | $5,779 | $5,928 | $6,075 | $6,229 | $6,384 | $6,542 | $6,708 | $6,870 |
| Hourly | $32.43 | $33.21 | $34.07 | $34.91 | $35.80 | $36.69 | $37.60 | $38.55 | $39.48 |
Steps as published. The monthly and hourly rows are the state's own, not conversions of the annual row.
Class specification
The OFM classified job specification for this class is published by Washington State Office of Financial Management (OFM). The passages below are quoted from it as published, not paraphrased, and cut to their opening sentences; the full specification is the authority on duties and qualifications.
What the state says the job is
As a certified Group 2 wastewater treatment operator or Group 2 water distribution/treatment plant operator, operates and maintains a Class 2 wastewater treatment plant or water distribution/treatment plant at an institution or serves as a backup for a Wastewater Treatment Plant Operator 3.
Examples of the work
Plans, assigns, and supervises work of lower level staff of unskilled and skilled workers and /or residents engaged in operation of sewage treatment or water treatment/distribution plant and in maintenance and repair of auxiliary equipment, compressors, pumps, water lines, controls, and meters; Instructs operating personnel in proper operating and maintenance methods and procedures; Directs the analytical testing of sewage treatment plant chemical operations for plant efficiency, including daily and weekly tests for dissolved oxygen, settable solids, pH valves, and biochemical oxygen demand; Inspects plant and advises supervisor regarding maintenance, operational, and safety problems; recomm ...
Minimum qualifications
Certification by Department of Ecology as a Group 2 wastewater treatment plant operator OR A valid Washington State Certificate of Competency issued by the Department of Health as a Water Treatment Plant Operator 2 or Water Distribution Manager 2 Note : Classification of the wastewater treatment plant will be determined by the Department of Ecology.
Quoted from the OFM classified job specification, read 2026-10-21.
Where this comes from
Washington State Office of Financial Management (OFM) publishes this figure in Classified Job Listing joined to the OFM salary schedules effective July 1, 2026. Every number on this page is read from that document; nothing is estimated, modelled or averaged.
The dollar figures come from the salary schedule the listing assigns this range to.
Nearby classes in Washington
Wastewater Treatment Plant Operator 2 in other states
| State | Minimum | Maximum | Per year at full time |
|---|---|---|---|
| New York | $45,081 | $55,322 | $45,081 to $55,322 |
Each state publishes its own range for a classification with this exact title. Duties, grade structures and bargaining units differ between states, so read each class page before comparing.