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State of Washington Classified Job Specification


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Class Code: 621F
Category: Maintenance Trades & Labor


Performs skilled plumbing and/or steamfitting work.

Typical Work

Installs, maintains and repairs pipes, storm sewers, septic tanks, sewage mains and laterals, valves, drains, basins, tubs, faucets, lavatories, sinks, gates, hydrants, water coolers, and dishwashers;

Repairs fixtures in shop by refacing, repacking, and re seating valves, cutting and threading pipe, bending pipe, replacing pump bushings and washers, and testing valves and other pressure equipment;

Inspects water mains, fixtures, sewer lines, valves, and septic tanks to determine need for maintenance and repair;

Cleans, maintains, and repairs power and hand tools; Estimates materials and time needed to complete jobs; May direct and instruct helpers, patients or inmates; Performs other work as required.

Installs, inspects, maintains and repairs steam and heating systems and such equipment as boilers, radiators, oil burners, pumps, traps, valves, and laundry and kitchen equipment;

Repairs and replaces pipe and pipe coverings; welds and threads pipe;

Performs shop work such as disassembling valves and equipment, replacing worn parts, and reassembling and testing equipment;

Cleans, maintains and repairs tools and equipment;

Estimates materials and time needed to complete jobs;

May direct and instruct helpers, patients or inmates;

Knowledge and Abilities

Knowledge of: standard practices, methods, materials, tools, and equipment of plumbing and/or steamfitting trades; kinds, uses, and qualities of fixtures; safety precautions. Operation and maintenance of steam power plant machinery; fluid and gas systems; boiler laws; safety precautions.

Ability to: work from blueprints, plans, and sketches; estimate materials and time needed to complete jobs; use hand and power tools.

Legal Requirement(s)

There may be instances where individual positions must have additional licenses or certification.  It is the employer’s responsibility to ensure the appropriate licenses/certifications are obtained for each position.

Desirable Qualifications

Journey‑level standing as a plumber or steam fitter as attested by:

a. Completion of recognized apprenticeship in plumbing or steamfitting.


b. Full journey‑level status in Plumbers and Pipefitters' Union.


c. Four years of experience in State service as full‑time helper to a journey‑level plumber or steamfitter.

Some positions may require a valid motor vehicle driver’s license.

Note: 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.

Class Specification History

New class consolidates 5425 Plumber/Pipefitter/Steamfitter, 70200 Plumber, 70250 Steamfitter;  adopted May 10, 2007, effective July 1, 2007