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Welcome to Napa Sanitation District's (NapaSan) employment portal! Thank you for your interest in applying for a position with us. Our Workforce Mission Statement is:

“To Ensure a Safe, Livable Community by Providing Efficient and Effective Public Services."

To this end, our employees play a critical role and are valued every day for their contribution to fulfilling this commitment.

NapaSan has high expectations of those who join our team, but at the same time, we regard our employees as our most valuable asset. We recognize that it is our employees who drive our success and meet the needs of our City's residents and businesses every day. So to attract and retain the best staff, we offer competitive salaries and an excellent benefits package.

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Read the job posting carefully; it contains information about the position for which you are applying. Answer all questions completely and accurately. Your opportunity for employment begins with the accuracy and completeness of your application. The information you provide in the application and assessment (if applicable) will be the primary basis for evaluating your qualifications. You are responsible for documenting all relevant qualifications in the appropriate section of the application - do not refer to a resume. Resumes may be uploaded electronically in addition to the required application and questionnaires.

Your electronic application is required in order to be considered for our employment opportunities unless otherwise indicated in the recruitment bulletin. Applications are due by the deadline noted on the job bulletin. You will be notified by email regarding the status of your application. The Human Resources office is not able to provide status updates by telephone.

Job Detail

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Treatment Plant Operations Volunteer

Closes On: December 31, 2019 at 12:00 AM PST

Job Status: Full-Time and Part-Time
Days Worked: Mon., Tue., Wed., Thu., Fri.
Rate of Pay: $0 - $0
Status: Accepting Applications
 Apply Now

Job Description


This is a volunteer position. Volunteer assignment can be through local college Water and Wastewater Technology program (Solano Community College or Santa Rosa Junior College) or directly with NapaSan. Volunteer days and hours are negotiable. May volunteer up to 1,800 hours total.

The intent of the position is to provide training and experience required by the State Water Resources Control Board to obtain a Wastewater Operator Certification. Volunteers will learn about wastewater and recycled water treatment technology, appurtenances and processes in a Grade 5 Treatment Plant, relevant state and federal regulations, as well as basic workplace skills and habits.



Treatment Plant Operations Volunteers may be instructed in and receive supervised hands-on training on some of these duties:

  • How to operate treatment, pumping, and reclamation facilities to achieve proper processing of wastewater, biosolids and recycled water within mandated operation requirements.
  • How to inspect plant operational equipment and facilities on a regularly-scheduled basis; record readings of pumps, chemical feed, and other treatment and pumping equipment.
  • How to review and analyzes operational information and test results.
  • The purpose of a Supervisory Control and Data Acquisition (SCADA) system.
  • How to collect wastewater, sludge, and other samples from various phases of the wastewater treatment process.
  • How to operate valves, pumps, and automated controls to regulate the flow of wastewater through the system.
  • How to remove screenings and grit; clean clarifiers and primary, secondary, and other wastewater equipment and facilities.
  • Gain an understanding of the principles of wastewater treatment process operation.
  • Appropriate safety procedures, including those related to the safe handling of chlorine and other treatment chemicals.


Any combination of training and experience, which would provide the required knowledge, skills, and abilities, is qualifying. A typical way to obtain the required qualifications would be:

Equivalent to completion of the twelfth (12th) grade supplemented by six (6) educational points (a 3-unit college semester math or science course is equal to 3 educational points and 10 classroom hours are equal to 1 educational point).

No prior experience is required.



Knowledge of:

  • Shop arithmetic.
  • Basic mechanical, electrical, and hydraulic principles.
  • Basic principles of wastewater treatment.
  • Basic chemical and physical tests of wastewater, sludge, and related materials.
  • English usage, grammar, spelling, vocabulary, and punctuation.

Ability to:

  • Apply science and math concepts to real situations.
  • Do physical labor, with hand and power tools, outdoors in all weather.
  • Function as part of a team.
  • Be safety oriented.
  • Operate modern office equipment, including computer equipment.
  • Use English effectively to communicate in person, over the telephone, and in writing.
  • Use tact, initiative, prudence, and good judgment within general policy guidelines.
  • establish and maintain effective working relationships with those contacted in the course of the assignment. 



Six (6) educational points (a 3-unit college semester math or science course is equal to 8 educational points and
10 classroom hours are equal to 1 educational point.) are required to apply for this volunteer position.

Please upload proof of educational points as part of your application.