Demo

Water / Wastewater Manager

County of Mason (WA)
Mason, WA Full Time
POSTED ON 8/13/2026
AVAILABLE BEFORE 8/28/2026
Plan, organize and manage the day-to-day activities of the Water, Wastewater Utility, and is responsible for the on-going operation and reporting for the potable water systems and the wastewater systems, consistent with all regulatory provisions.(Any one position may not include all the duties listed nor do the listed examples include all tasks which may be found in positions of this class.)

Responsible for the daily operations and maintenance assignments to sustain the operation of potable water and wastewater systems. 

Responsible for assigning, training, supervising, and evaluating the work performance of assigned staff. Assign, supervise, and evaluate the work of staff. Advise and train subordinates as necessary. Participate in the selection of new employees and makes recommendations regarding hiring, performance, discipline, transfer, and termination.

Responsible for preparing and submitting all required reports and other documentation, as required to maintain compliance with County, State Federal and local laws, regulations and/or standards.

Assist the Deputy Director with the preparation, administration, and monitoring of the Utilities budgets. Monitor and document program expenditures, ensuring compliance with approved budget(s) and staffing levels. Enforce department and county policies, procedures, guidelines, regulations, and safety and health standards.

Assist the Deputy Director regarding short- and long-range plans for utility operations. Coordinate divisional activities in conjunction with other County departments and outside governmental agencies. Maintain interagency cooperation with all regulatory agencies and commissions.

Review permits, construction plans and specifications under guidance from the Deputy Director when needed. Oversee new construction, rehabilitation and maintenance of water and wastewater facilities.

Provide representation on interdepartmental committees and before HOA’s; make presentations and provide technical advice and assistance regarding utilities.

Analyze and recommend systematic maintenance approaches to existing facilities, equipment, and operating systems of the division. 

Maintain records for proper evaluation, control, and documentation of assets.

Resolve inquiries, complaints, problems, or emergencies affecting the availability or quality of services. 

Respond to sensitive or complex inquiries of service complaints with guidance from the Deputy Director.

Authorize payments for contracted services; and participate in resolution of disputed contractual matters.

Remain current on legislation, legal requirements, and regulations and communicates changes that affect operations with team. 

Regular, reliable, and punctual attendance. 

Other duties as assigned. 

Knowledge of:
  • Wastewater treatment processes, including preliminary, primary, secondary, and tertiary treatment. 
  • Solids digestion, sludge handling, and plant-wide air, water, electrical and hydraulic support systems.
  • Collection systems, including pumping stations, regulatory stations and miscellaneous structures and disinfecting methods.
  • Wastewater terminology and process control. 
  • Industrial safety procedures and practices.
  • Wastewater laboratory protocols and typical process control testing for a wastewater plant.
  • Delegates authority appropriately and monitors production/progress with effective control techniques.
  • Management and supervision principles and practices.
  • Legal requirements, regulations, and laws applicable to area of assignment
  • Techniques and practices utilized in the construction, operation and maintenance of water and wastewater systems.
  • Principles and practices of contract and grant administration.
  • County Government process, procedures and practices.

Skill in:
  • Exercising sound, ethical judgment in the decision-making process.
  • Fiscal management, including budget preparation, expenditure control and recordkeeping.
  • Computer applications including word processing and spreadsheets.

Ability to:
  • Plan, organize and oversee assigned work programs.
  • Develop departmental goals and objectives and conduct planning activities.
  • Analyze and evaluate operations, develop and implement corrective actions.
  • Establish and maintain effective working relationships with stakeholders.
  • Communicate effectively, both orally and in writing, about complex or sensitive issues.

OTHER JOB DUTIES:
  • May be required to obtain additional education as required to conduct business functions. 
(Any equivalent combination of education and experience which provides the applicant with the knowledge, skills, and abilities required to perform the job may be considered.) 
  • High School Diploma or GED and two (2) years of college (90 credits or CEU’s) and four (4) years of treatment plant experience, with at least two (2) years at a class III or higher plant. 
OR
  • High School Diploma or GED and six (6) years of treatment plant experience, with at least two (2) years at a class III or higher plant.
OR
  • High School Diploma or GED and four (4) years of college (180 credits or CEU’s) and two (2) years of treatment plant experience at a class III or higher plant. 

LICENSES, CERTIFICATES AND OTHER REQUIREMENTS:
  • Valid Washington State driver's license
  • State of Washington Certification as a Group III Wastewater Operator 
  • Water Distribution Manager I (WDM-I) certification or ability to obtain in one (1) year of hire
  • First Aid/CPR Card
  • Cross Connection Specialist (CCS) or ability to obtain in one (1) year of hire
  • Confined Space Entry training 


This position is required to follow chapter 13 of the Mason County Personnel Policy. If offered the position you must provide a Abstract Driving Record from the WA State DOL.




This recruitment is open until filled, application review is ongoing. Submit your application materials as soon as possible as this recruitment may close at any time.

Work Schedule: 07:00AM - 3:30PM

Salary : $90,238 - $112,695

If your compensation planning software is too rigid to deploy winning incentive strategies, it’s time to find an adaptable solution. Compensation Planning
Enhance your organization's compensation strategy with salary data sets that HR and team managers can use to pay your staff right. Surveys & Data Sets

What is the career path for a Water / Wastewater Manager?

Sign up to receive alerts about other jobs on the Water / Wastewater Manager career path by checking the boxes next to the positions that interest you.
Income Estimation: 
$107,523 - $144,337
Income Estimation: 
$148,684 - $191,756
Income Estimation: 
$89,517 - $109,269
Income Estimation: 
$105,498 - $131,773
Employees: Get a Salary Increase
View Core, Job Family, and Industry Job Skills and Competency Data for more than 15,000 Job Titles Skills Library

Not the job you're looking for? Here are some other Water / Wastewater Manager jobs in the Mason, WA area that may be a better fit.

  • David Evans and Associates, Inc. Olympia, WA
  • Senior Project Manager, Water/Wastewater Water And Environment Jobs With David Evans And Associates At David Evans and Associates, Inc., our Water and Envi... more
  • 1 Month Ago

  • David Evans and Associates, Inc. Olympia, WA
  • Project Manager, Water/Wastewater Water And Environment Jobs With David Evans And Associates At David Evans and Associates, Inc., our Water and Environment... more
  • 1 Month Ago

AI Assistant is available now!

Feel free to start your new journey!