Job Description

This classification is a level one (1) and responsible for assisting in the site maintenance and operation of wastewater treatment plants, collection systems, drinking water facilities, and water distribution systems of the County to ensure quality operations of wastewater and drinking water systems for the citizens.

Examples of Duties

  • Regular, reliable, and punctual attendance required.
    Monitor the wastewater plant processes and water system quality.
    Conduct maintenance and minor repairs on plant equipment, machinery, and systems.
    Assist in laboratory testing and analysis.
    Perform collection system and distribution system responsibilities.
    Locate and inspect new construction utility hook ups.
    Respond to customer complaints and questions.
    Respond to emergency operations concerns.
    Maintain grounds and buildings.
    Communicates effectively verbally and in writing.

This classification requires the incumbent to be able to read and interpret the laws, rules and regulations relating to wastewater and drinking water systems; work independently, with limited supervision’ work within established policies, procedures and processes.


Incumbents are required to know: The basic components of wastewater and potable water systems; laws and regulations regarding the operation and maintenance of wastewater collection, conveyance and treatment and disposition; and drinking water systems.
Incumbents are required to have the ability to: Perform duties accurately and timely; make accurate mathematical calculations; perform accurate laboratory tests and analysis; communicate effectively with the public, other employees and outside professionals;  mentally and physically perform essential functions; work independently within established guidelines with limited supervision; handle multiple, multi-step tasks simultaneously; maintain effective working relationships with other employees in the department, other county departments and regulatory agencies.

Minimum Qualifications
(Any equivalent combination of education and experience, which provides the applicant with the knowledge, skills, and abilities required to successfully perform the job)

High School Diploma or equivalency and
One (1) year of domestic wastewater system and drinking water system operating experience and
Experience in monitoring and/or maintenance of mechanical systems.


Valid Washington Driver’s License, incumbents are required to have and maintain a good driving record while employed by the County.
Wastewater Treatment Plant Operator 1 Certification by Washington Department of Ecology
Water Distribution Specialist Certification by the Washington Department of Health Drinking Water Program
First Aid/CPR Certification

Wastewater Operator Certification Program requires one (1) year of domestic wastewater treatment plant operating experience, there is no substitution for the operating experience.
Water Distribution Specialist Certification requires a High School Diploma or equivalency and six (6) months of experience of working as a water system operator.

Supplemental Information
Internal posting with General Services Teamsters Bargaining Unit is concurrently with the public. Therefore, if a qualified applicant from within the bargaining unit applies, that person may be selected for the position.

Any one position may not include all of the duties listed nor do the listed examples include all tasks, which may be found in positions of this class.

Salary $57,136.08 – $69,328.08 Annually
Location Mason County, WA
Job Type Full-Time
Job Number 202300063
Department Utilities & Waste Division
Opening Date 11/13/2023
Closing Date 12/4/2023 11:59 PM Pacific
FLSA Non-Exempt
Bargaining Unit 14

Job Overview