Wastewater Treatment Plant Operator

City of Mill Valley | Mill Valley, CA

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Posted Date 10/08/2020

The Sewerage Agency of Southern Marin (SASM) is a joint powers authority (JPA) that provides wastewater collection, treatment, water reclamation, and disposal for 30,000 Southern Marin residents. The City of Mill Valley, a member of the JPA, provides staff for SASM. Staff are hired by the City and operate under the Department of Public Works.

SASM is located along the waterfront in Mill Valley in close proximity to Highway 101, San Francisco, nature preserves, and iconic recreational areas.

Mill Valley has grown from a small mill town to the modern full-service city it is today. With a staff of almost 150 full-time employees and an annual operating budget of $41 million, the City of Mill Valley prides itself on efficient, effective and courteous service delivery with a commitment to operational excellence.


Under the general direction of the Chief Treatment Plant Operator, the Treatment Plant Operator conducts work performed in the Wastewater Treatment Plant, including maintenance of the plant, sewage lift stations, trunk sewers, and out fall.

Examples of Essential Duties (include but are not limited to):

  • Operate and adjust all unit operations in the treatment plant to ensure smooth and efficient operation.
  • Record/collect, calculate, interpret, and report data.
  • Collect samples, troubleshoot and address operational and mechanical issues.
  • Conduct minor preventative maintenance including equipment inspection, internal and external cleaning, oil and grease changes or replenishment, adjustments, etc.
  • Identify and request repairs or improvements as needed.
  • Read, understand, and implement Operation and Maintenance Manual procedures; update or modify procedures when necessary.

Ideal Candidate

The ideal candidate will be a detail oriented self-starter who is comfortable working both independently and as a part of a team. He/she should be mechanically-inclined, safety-oriented, comfortable and accurate with basic math, and able to follow directions.

Recommended experience and training include:

  • 18 months of hands-on experience in a Wastewater Treatment Plant operation.
  • High school education or equivalent
  • Possession of, or ability to obtain, a Grade 1 Certification for a Wastewater Treatment Plant Operator
  • Possession of a Grade II or above certificate is highly desirable.


The City of Mill Valley prides itself in its workforce and is pleased to offer a generous benefits package. This position is represented by the American Federation of State, County and Municipal Employees Association (AFSCME).

  • Leave – the City provides a generous leave package:
    • 14 holidays and floating holidays/personal days
    • 2 to 5 weeks of vacation leave based upon years of service
    • Health Insurance – City provides the full premium for the Kaiser Family Plan or the equivalent thereof for employees who elect Western Health Advantage HMO.
  • Dental Insurance – City provides the full premium for Delta Dental
  • Retirement
    • New employees with no prior CalPERS service or have a break in CalPERS service of 6 months or more: 2% @ 62
    • New employees who are “classic” CalPERS members and do not have a break in service of more than 6 months: 2.5% @ 55
  • 457 Deferred Compensation – the City offers up to $300/year in matching contributions toward deferred compensation
  • Other
    • City pays the premium for Long-Term Disability Insurance and Life Insurance ($50,000)
    • Free pool/gym membership at the Mill Valley Community Center
    • Discounts on classes, facility rentals, and camps provided by Mill Valley Recreation

Special Instructions

Resumes will not be accepted in lieu of the City's official application form via CalOpps, but should accompany the application. All applications and resumes will be reviewed to select those applicants whose qualifications appear to most closely match the requirements of the position. A limited number of qualified applicants may be invited to participate in the subsequent phase(s) of the recruitment process, which may include one or more of the following: written examination, performance examination, assessment exercises, oral interviews, and complete background checks. Meeting the minimum qualifications does not guarantee advancement in the selection process. Paper applications may be obtained from the City of Mill Valley at City Hall, 26 Corte Madera Avenue, Mill Valley, CA 94941 or by calling (415) 388-4033 x4835.

Job Category
Local Government
Career Level
Entry Level

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