Skip to main content
Urgent!
Posted August 10, 2026

Senior Water Treatment Plant Operator

Vallejo, CA, USA Full Time
Compensation: $117,070 to $142,299 Annually

Certifications
Job includes multiple certifications

This recruitment is being conducted to fill three full-time vacancies. The list established by this recruitment may be used to fill future full-time, part-time, limited term, and temporary vacancies for up to one year. The ideal candidate for the position of Senior Water Treatment Plant Operator will have sufficient working knowledge and progressively responsible experience working in a T3 system (or higher) drinking water treatment facility, comparable to Vallejo's surface-water treatment processes.

This is the advanced journey level classification in the Water Treatment Plant Operator series. Employees in this classification have successfully obtained their Grade T4 and demonstrated their ability to perform and lead others in the full range of responsibilities involved in the operation and maintenance of a serviceable water supply through the City's transmission, distribution facilities, water treatment plants and sludge de-watering facility, without direction. Incumbents function with a high degree of autonomy to apply advanced concepts and expertise in specific areas to resolve issues/problems that are often of a unique nature without precedent and/or structure. Assignments may include formulating strategies and making recommendations for improved processes and allocation of resources. This classification is distinguished from Water Treatment Plant Supervisor in that the latter is a first-line supervisory classification responsible for the direct supervision and development of assigned staff, planning, goal implementation, policy development, assisting with budget preparation, as well as managing the day-to-day operations of an assigned treatment plant.

As a condition of continued employment with the City of Vallejo in the classification of Senior Water Treatment Plant Operator, incumbents are required to maintain a Grade T4 Water Treatment Plant Operator certification by the California State Water Resources Control Board (SWRCB). If incumbent is unable to maintain a Grade T4 Water Treatment Plant Operator certification, employment will be terminated.

Experience and Training Guidelines
Any combination of experience and training that would likely provide the required knowledge, skills, and abilities is qualifying. A typical way to obtain the knowledge, skills, and abilities would be:


Experience:
A minimum of four (4) years of experience working in water treatment operations, with at least two (2) of those years working at a journey-level with a Grade T3 certification, equivalent to the Water Treatment Plant Operator with the City of Vallejo.

Education:
Equivalent to completion of the twelfth (12th) grade.
Successful completion of relevant courses required in order to obtain and maintain Grade T4 certification from the California State Water Resources Control Board (SWRCB).

License or Certificate:
Possession of, and ability to maintain, a valid driver’s license.
Possession of, and ability to maintain, a Water Treatment Plant Operator Grade T4 Certification issued by the California State Water Resources Control Board (SWRCB). Failure to maintain appropriate certification throughout employment for this classification will result in termination of employment.
Possession of current and valid certifications for Hazardous Materials Technician, Confined Space Entry, CPR/First Aid, and Fork Lift Safety at the time of appointment is desirable, but must be obtained within the first 12 months of employment and maintained thereafter.

*Any license, certification, or registration required for this position shall be maintained (i.e. active and in good standing) at all times during employment with City of Vallejo. For continued employment with City of Vallejo, you must maintain such license, certification, or registration to meet the minimum qualifications of this position.

Additional Application Instructions

Applications are due by 5:00 P.M. on Monday, August 17, 2026. Applicants must submit a completed City of Vallejo online application, including all responses to the Supplemental Questionnaire (Resume/Cover Letter Optional), by the posted deadline in order to be considered.

Sign up for Job Alerts