This is a transfer opportunity, and first consideration is given to qualified transfer-eligible employees in the job classification family
If no qualified internal candidate is selected, external applicants will be considered.
This recruitment may be used to establish a pool of qualified candidates to fill future Custodian positions at the South Treatment Plant for Career Service vacancies within the Wastewater Treatment Division over the next 6 months.
The Wastewater Treatment Division transforms wastewater to become a valuable resource for all King County communities. For those who live, work, and play in King County to have a healthy and sustainable future, the work the Wastewater Treatment Division accomplishes is valuable and important. The impact the Wastewater Treatment Division has on King County shows how great it is to work for WTD.
About the Role
The primary function of the Custodian is to maintain the cleanliness of interiors and exteriors of various office and industrial facilities at WestPoint Treatment Plant.
About the Team
This is a great opportunity for an individual who likes a variety of work, working with a diverse team that supports the Operations and Maintenance of the west section. The successful applicant will work to help the Wastewater Treatment Division maintain a healthy environment for wastewater treatment personnel of King County.
Commitment to Equity, Racial and Social Justice:
King County, named after Dr. Martin Luther King, Jr., is a diverse and vibrant community that represents cultures from around the world. Our True North is to create a welcoming community where everyone can thrive. We prioritize equity, racial and social justice, making it a foundational and daily expectation for all employees. As a Custodian, you will actively apply these principles in all aspects of your work. Learn more about our commitment at http://www.kingcounty.gov/equity .
Apply now for a rewarding career at the Wastewater Treatment Division of King County Department of Natural Resources & Parks (DNRP). Join our talented workforce in protecting and restoring the natural environment and promoting more resilient, sustainable, and equitable communities. Enjoy training, c omprehensive benefits , and growth opportunities.
Job Duties
What You Will Be Doing:
- Strip, wax and scrub various types of floors; vacuum and extract dirt from carpets and machine-buff floors.
- Clean, stock and sanitize restrooms, kitchens, and public spaces including tables, chairs, toilets, showers, sinks and walls.
- As directed, mix and use cleaning solutions and chemicals.
- Dust, wash and vacuum surfaces.
- Request and stock various types of supplies.
- Empty trash.
- Monitor and report any building, equipment, or safety issues to staff.
- Support grounds maintenance including litter pickup and occasional outdoor tasks.
- Follow established safety protocols and contribute to a culture of health and safety.
- Clean glass windows and surfaces
- May research and prepare bid specifications for cleaning equipment and supplies.
Experience, Qualifications, Knowledge, Skills
Qualifications You Bring:
- Knowledge of basic janitorial cleaning techniques.
- Knowledge in the use and care of cleaning equipment.
- Knowledge of basic safety rules and procedures to ensure the safety of yourself and co-workers.
- Knowledge of basic cleaning chemicals.
- Effective communication skills and the ability to follow written and verbal instructions.
- Ability to demonstrate behaviors that include fairness, respect, and inclusiveness.
- Ability to work effectively with others in a work environment that embraces and encourages diversity in its workforce and where differences are valued.
Competencies You Bring:
- Customer Focus - Building strong customer relationships and delivering customer-centric solutions.
- Action Oriented - Identifies and seizes new opportunities; Displays a can-do attitude in good and bad times; Steps up to handle tough issues.
- Resourcefulness -Securing and deploying resources effectively and efficiently.
- Manages Conflict - Handling conflict situations effectively, with a minimum of noise.
- Communicates Effectively: Developing and delivering multi-mode communications that convey a clear understanding of the unique needs of different audiences.
- Being Resilient: Rebounding from setbacks and adversity when facing difficult situations.
Required Licenses:
- Washington State Driver’s License.
It Would Be Great if You Also Bring:
- One (1) or more years of recent professional industrial cleaning/janitorial work experience
Physical Requirements:
- Lifting up to 50 pounds, twisting, climbing, and bending on a daily basis.
Workplace Exposure:
- Working in a wastewater treatment environment with exposure to some wastewater pathogens, and contaminates.
Supplemental Information
Working Conditions:
- Work Location: West PointTreatment Plant - 1400 Discovery Park Blvd, Seattle, WA 98199
- Work Schedule: This full-time position works a 40-hour work week. This position is covered under the provisions of the Fair Labor Standards Act (FLSA) and is overtime eligible.
- Union Representation: This position is represented by S.E.I.U. L925 (Wastewater Treatment Division).
- Physical Requirement: Incumbents performing field work must be able to lift 50 lbs.
- Workplace Exposure: Working in a wastewater treatment environment with exposure to some wastewater pathogens, and contaminates.
Application and Selection Process:
We welcome applications from all qualified applicants. We value diversity, diverse perspectives and life experience and encourage people of all backgrounds to apply.
Application materials will be screened for clarity, completeness and alignment with the experience, qualifications, knowledge, and skills essential for this role to determine which candidates may be invited to participate in a technical assessment and one or more panel interviews.
To apply, submit a:
- Complete Application
- Resume
- Responses to the supplemental questions
Note: Additional documents won't be considered during minimum qualification screening.
Who to Contact: For more information regarding this recruitment, please contact Dan Sherman, HR Analyst at dasherman@kingcounty.gov.
Discover More About the Wastewater Treatment Division: Visit our website and check us out at Facebook , X (formerly Twitter) , Instagram , YouTube , and the WTD Blog .
Discover More About DNRP: Visit our DNRP website , explore an interactive map of our recent accomplishments and check us out at Facebook , X (formerly Twitter) , LinkedIn , TikTok , Instagram , YouTube and Keeping King County Green News .
Sign up for Job Alerts to be notified of additional career opportunities with King County. Select the Natural Resources category for DNRP opportunities and explore other categories of interest.
King County's Vision, Mission, and ACTIVATE Values unite us.
King County serves residents with a relentless sense of urgency, delivering on commitments with transparency and accountability. We are action-oriented, creative problem solvers who collaborate across roles, engage directly with communities, and challenge the status quo to achieve meaningful impact. As a unified team, we uphold high ethical and stewardship standards, embrace change, stay curious, and continuously improve. Across all interactions, we listen first, act quickly, and stay aligned as a team to earn and sustain public trust. Learn more about our Vision, Mission, and ACTIVATE Values here and visit our Why work at King County page here .
King County is an Equal Employment Opportunity (EEO) Employer
No person is unlawfully excluded from employment opportunities based on sex, race, color, national origin, ethnicity, religious affiliation, disability, sexual orientation, gender identity or expression, age except by minimum age and retirement provisions, pregnancy, status as a family caregiver, parental status, marital status, military status or status as a veteran who was honorably discharged or who was discharged solely as a result of the person's sexual orientation or gender identity or expression, citizenship or immigration status, genetic information, or other protected class. However, to the extent that distinction or differential treatment on the basis of citizenship or immigration status is authorized by either federal or state law, regulation, or government contract, it is not an unfair practice.
Our EEO policy applies to all employment actions, including but not limited to recruitment, hiring, selection for training, promotion, transfer, demotion, layoff, termination, rates of pay or other forms of compensation.
To Apply
If you are interested in pursuing this position, please follow the application instructions carefully. If you need this announcement in an alternate language or format, would like to request accommodation or assistance in the application or assessment process or if you have questions, please contact the recruiter listed on this job announcement.
King County offers a highly-competitive compensation and benefits package designed to meet the diverse needs of our employees and support our employees' health and well-being. Eligible positions receive the following benefits and have access to the following programs:
- Excellent medical, dental, and vision coverage options: King County provides eligible employees with options, so they can decide what’s best for themselves and their eligible dependents
- Life and disability insurance: employees are provided basic coverage and given the opportunity to purchase additional insurance for both the employee and eligible dependents
- Retirement: eligible King County employees may participate in a pension plan through the Washington State Department of Retirement Systems and a 457(b) deferred-compensation plan
- Transportation program and ORCA transit pass
- 12paid holidays each year plus twopersonal holidays
- Generous vacation and paid sick leave
- Paid parental,family and medical, and volunteer leaves
- Flexible Spending Account
- Wellness programs
- Onsite activity centers
- Employee Giving Program
- Employee assistance programs
- Flexible schedules and telecommuting options, depending on position
- Training and career development programs
This is a general description of the benefits offered to eligible King County employees, and every effort has been made to ensure its accuracy. If any information on this document conflicts with the provisions of a collective bargaining agreement (CBA), the CBA prevails.
NOTE: Benefits for Term Limited Temporary (TLT) or Short Term Temporary (STT) positions, including leave eligibility and/or participation in the pension plan through the Washington State Department of Retirement Systems, will vary based upon the terms and details of the position.Short Term Temporary positions are not eligible for an ORCA transit pass.
For inquiries about the specifics of this position, please contact the recruiter identified on this job posting.
Closing Date/Time: 8/12/2026 11:59 PM Pacific
King County Water and Land Resources Division
206-477-4800The Water and Land Resources Division is at the forefront of King County’s efforts to protect and restore clean water and healthy habitat and strengthen the resilience of communities, environment, and infrastructure in the face climate change. We are a dedicated workforce of more than 400 supported by an annual budget of ~$250 million. WLRD has a strong track record of developing innovative strategies for protecting working farms and forests, restoring habitat, protecting water quality, and ensuring people have equitable access to green space. We reduce flood hazards, manage stormwater facilities, and reduce toxic threats. Our Environmental Lab and Science section maintain high-quality data sets used in long term-water quality trend analysis and use Best Available Science to inform decision making. We house three salmon recovery forums and support the Land Conservation Initiative, which will preserve our last, most important natural lands and urban green spaces over the next 30 years. Our forestry and agricultural programs help people protect their lands and support local food production.
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