Top 74 Wastewater treatment Jobs in Seattle, Wa

Wastewater Treatment Operator (WWT Operator)
Leidos —Seattle, WA
- $50,700 - $91,650 a year
- Extended hours
- 5 years
- High school diploma or GED
- Driver's License
Water and Wastewater Treatment Operators / Field Technicians
Project Solutions Inc. —Seattle, WA
- Full-time
- OSHA
- Mid-level
- Analysis skills
- Health savings account
- Paid holidays
Field Service Technician I - Seattle, WA (Company Vehicle & 4-Day Workweeks!)
Hach —Seattle, WA
- $29 - $31 an hour
- Full-time
- Clean driving record
- Customer service
- High school diploma or GED
- Travel reimbursement
- Health insurance
Water/Wastewater Treatment Plant Construction Superintendent
Prospect Construction, Inc. —Seattle, WA
- $120,000 - $140,000 a year
- Full-time
- Microsoft Excel
- Microsoft Outlook
- Construction site
- Profit sharing
- Health savings account
Quick Apply
Assembly Technician
Madden Industrial Craftsmen —Redmond, WA
- $23 - $29 an hour
- Full-time
- English
- Forklift
- High school diploma or GED
- Health insurance
- 401(k)
Quick Apply
10h
Entry-Level Wastewater Process Mechanical Engineer
Carollo Engineers Inc. —Seattle, WA
- $80,000 - $100,000 a year
- Full-time
- Master's degree
- Doctor of Philosophy
- Civil Engineering
- Paid holidays
- Disability insurance
Wastewater Treatment Operator
King County —Maple Valley, WA
- $42.78 - $51.92 an hour
- Overtime
- Ability to walk for extended periods
- Mid-level
- Forklift
11h
Wastewater Ops Maintenance Technician
Lakehaven Water and Sewer District —Federal Way, WA
- $34.87 - $56.29 an hour
- Urgently hiring
- Heavy equipment operation
- Mid-level
- CDL
- Paid holidays
- Disability insurance
Quick Apply
Wastewater Process Engineer
Kennedy/Jenks Consulting —Seattle, WA
- $88,000 - $147,000 a year
- Full-time
- Hybrid work
- Mid-level
- Office
- Travel
- Travel reimbursement
- Health savings account
Water/Wastewater Treatment Engineer
RH2 Engineering —Bothell, WA
- From $37 an hour
- Overtime
- Microsoft Outlook
- Construction site
- Data analysis skills
- Profit sharing
- Health savings account
Quick Apply
Water Applications Technician
Tidal Vision —Seattle, WA
- $81,000 a year
- Full-time
- Background check
- Up to 50% travel
- Local
- Health savings account
- AD&D insurance
Quick Apply
Wastewater Treatment Operator/Senior Operator - C Crew
King County —Renton, WA
- $85,712.02 - $108,644.85 a year
- Overtime
- CPR Certification
- Mid-level
- Ability to lift 50 pounds
7d
Industrial Instrument Technician - West Point
King County —Seattle, WA
- $48.65 - $61.67 an hour
- 8 hour shift
- Word processing
- Mid-level
- 3 years
Project Leader
Veolia —Seattle, WA
- $149,800 - $224,600 a year
- Full-time
- 6 years
- Word processing
- Office
- Health insurance
- Dental insurance
Quick Apply
Chemical Technician
Valence Surface Technologies, LLC —Seattle, WA
- $22 - $26 an hour
- Full-time
- Basic math
- Mid-level
- High school diploma or GED
Quick Apply
Tunneling Superintendent
MWH —Kent, WA
- $120,000 - $160,000 a year
- Full-time
- Background check
- Senior level
- Leadership
- Paid parental leave
- AD&D insurance
Water/Wastewater Engineer
David Evans and Associates, Inc. —Bellevue, WA
- $100,000 - $140,000 a year
- Mid-level
- Office
- Bachelor's degree
- Health savings account
- Paid holidays
Operations Specialist - eOM Manual Technician
HDR —Seattle, WA
- $80,168.40 - $110,400.00 a year
- Full-time
- Construction site
- Writing skills
- Mid-level
- Paid holidays
- Disability insurance
Water/Wastewater Design Engineer
MacKay —Federal Way, WA
- $105,000 - $130,000 a year
- Remote
- Background check
- 5 years
- Bachelor of Science
- Health savings account
- Paid holidays
Sr. Water Quality Engineer
City of Seattle —Seattle, WA
- $68.52 - $79.78 an hour
- Online Application
- Hybrid work
- Construction site
- System design
- Office
- Disability insurance
- Health insurance
10d

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wastewater treatment jobs near seattle, wa

Wastewater Treatment Operator (WWT Operator)

Leidos -
Seattle, WA

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Job Details

Full-time
$50,700 - $91,650 a year

Qualifications

Wastewater Certification
Hazardous Waste Operations & Emergency Response Training
Safety protocol adherence
Project documentation
Personal protective equipment (PPE) use
Waste treatment plant experience
Process control instrumentation
High school diploma or GED
Certified Wastewater Treatment Operator
Driver's License
Compliance documentation
Safety equipment
Power tools
Hand tools
Facilities routine maintenance
Respirator
Wastewater systems

Full Job Description

Description

Leidos is currently seeking a Wastewater Treatment Operator (WWT Operator) to provide full time operation, repair and maintenance of a small-scale industrial dissolved air flotation (DAF) wastewater treatment plant. WWT Operator is responsible for onsite DAF operations (system operation, control and performance evaluation) to ensure industrial water quality meets the process needs and that effluent complies with discharge requirements of the facility permit(s).

Primary Responsibilities:

Perform O&M including operational checks, sampling and monitoring of pH, turbidity, temperature and surfactants, chemical calibration of pumps, bench top testing, equipment troubleshooting, and minor maintenance of mechanical components in accordance with equipment O&M Manuals.
Schedule and oversee subcontractors conducting electrical and plumbing repairs of the system.
Document compliance with project sampling procedures, including specific sample collection methods and documentation, complete daily logs and system documentation, and assist in data interpretation.
May support sampling of groundwater, collecting water level data, and storm water sampling during precipitation events.
Comply with Leidos site specific Health & Safety Plan.
Communicate directly with the site facility engineer as well as the Leidos Project Engineer located in Oakland, CA.

Required Skills and Qualifications:

High school diploma or equivalent and at least 5 years' relevant experience treating industrial wastewater, to include: wastewater treatment plant operation, system monitoring, sampling, and operations/maintenance.
Certified Wastewater Treatment Operator for Washington State, or in the process of becoming certified.
Forklift certification or the ability to obtain qualification/certification.
Current 40-Hour HAZWOPER certification with valid 8-Hour refresher training.
Demonstrated experience in delivering field work in a safe manner.
Ability to work independently to schedule and complete routine field duties.
Good organizational and project documentation skills.
Good communications skills and ability to proactively interact with client and Leidos team.
Valid driver’s license.
Willingness to work during night/weekend/extended hours occasionally as necessitated by site needs.

Preferred Skills:

Knowledge of DAF wastewater treatment systems with a Certified Level II wastewater treatment operator.

Physical Requirements:

Ability to wear required personal protective equipment (PPE), including hard hats, safety glasses, steel-toed boots, gloves, hearing protection, respirators, and chemical-resistant clothing as required.
Ability to enter confined spaces and perform confined space work in accordance with applicable regulations and training requirements.
Ability to lift, carry, push, and pull equipment, tools, hoses, pumps, and sample containers weighing up to 70 pounds, with or without reasonable accommodation.
Ability to perform field and plant operations activities requiring manual dexterity and the use of hand and power tools.
Ability to work at elevated heights and safely climb ladders, platforms, and catwalks.
Ability to distinguish colors, read gauges and instrumentation, and observe operating conditions for process monitoring and troubleshooting.

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting:

June 17, 2026

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:

Pay Range $50,700.00 - $91,650.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

About Leidos

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.

Pay and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.

Securing Your Data

Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at [email protected].

If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

Apply Now

Refine Your Search

wastewater treatment jobs in seattle, wa

Wastewater Treatment Operator (WWT Operator)

Water and Wastewater Treatment Operators / Field Technicians

Field Service Technician I - Seattle, WA (Company Vehicle & 4-Day Workweeks!)

Water/Wastewater Treatment Plant Construction Superintendent

Assembly Technician

Entry-Level Wastewater Process Mechanical Engineer

Wastewater Treatment Operator

Wastewater Ops Maintenance Technician

Wastewater Process Engineer

Water/Wastewater Treatment Engineer

Water Applications Technician

Wastewater Treatment Operator/Senior Operator - C Crew

Industrial Instrument Technician - West Point

Project Leader

Chemical Technician

Tunneling Superintendent

Water/Wastewater Engineer

Operations Specialist - eOM Manual Technician

Water/Wastewater Design Engineer

Sr. Water Quality Engineer

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