Plumber/Pipefitter/Steamfitter Supervisor pay range
State of Washington · class code 621H
- Class code
- 621H
- Salary range
- 58G
- Pay unit
- Year
- Alternate ranges
- 2
- State
- Washington
- The State of Washington published pay range for Plumber/Pipefitter/Steamfitter Supervisor is $78,504 to $91,104 per year, spanning every alternate range the plan defines.
- Washington State Office of Financial Management (OFM) keys this classification as class code 621H.
- The plan defines 2 alternate ranges for this class, so the rate depends on which bargaining unit covers the position.
- 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 58G in the General Service Salary Schedule. The range pays 7 steps, and this class starts at step G rather than at the bottom of the range; a step is normally earned on a periodic increment date, not negotiated.
| Basis | G | H | I | J | K | L | M |
|---|---|---|---|---|---|---|---|
| Annual | $78,504 | $80,496 | $82,440 | $84,528 | $86,688 | $88,788 | $91,104 |
| Monthly | $6,542 | $6,708 | $6,870 | $7,044 | $7,224 | $7,399 | $7,592 |
| Hourly | $37.60 | $38.55 | $39.48 | $40.48 | $41.52 | $42.52 | $43.63 |
Steps as published. The monthly and hourly rows are the state's own, not conversions of the annual row.
Alternate ranges
| Bargaining unit | Minimum | Maximum | Basis |
|---|---|---|---|
| As listed | $78,504 | $91,104 | per year |
| Teamsters | $78,504 | $91,104 | per year |
The listing prints a separate range for classes covered by a bargaining agreement. Which one applies depends on the employee's unit.
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
Supervises plumbers, pipe fitters and/or steamfitters and performs skilled plumbing, pipe fitting and/or steamfitting work; OR Directs a crew of incarcerated individuals of correctional institutions and performs skilled plumbing, pipe fitting and/or steamfitting work.
Examples of the work
Plans, lays out, directs and inspects work of crew of plumbers, pipe fitters, and/or steamfitters and helpers or crew of incarcerated individuals engaged in installation, maintenance and repair of steam systems and equipment such as boilers, pipes, radiators, pumps, traps, valves, and laundry and kitchen equipment; Keeps records; makes reports; Plans, lays out, directs and inspects work of crew of plumbers and helpers or crew of incarcerated individuals engaged in installing, maintaining and repairing water, refrigeration and sewage systems; Recommends repairs and consults with supervisors and others on projects; determines material and personnel requirements; Performs other work as required ...
Minimum qualifications
Three years of experience as a journey level plumber, pipe fitter or steamfitter. NOTE: • Some positions may require a valid motor vehicle driver’s license. • Some positions performing plumbing work as defined under WAC 296-400A-005 requires current Washington State PL01 License/Certificate issued by the Department of Labor and Industries. • Some positions will be required to obtain and maintain a Water Distribution Manager Certificate of Competency and/or Water Treatment Plant Operator Certificate of Competency issued by the Department of Health. These certificates are required by the Safe Drinking Water Act of December 1974, effective January 1, 1978.
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.