Senior Water Treatment Operator

We are seeking an experienced and highly motivated Facilities Water Treatment Specialist, to oversee and direct the preventive maintenance program for our facility water treatment systems and infrastructure. This position is responsible for providing operation, monitoring, maintenance, and adjustment of water treatment equipment and systems, including water treatment for chillers, RO (Reverse Osmosis) humidifiers, boiler treatment, water softeners, and deionized (DI) water systems, ensuring water quality and compliance with safety standards.

Primary Responsibilities:

• Monitor and maintain chiller treatment, RO humidification systems, water softeners, boiler treatment, and DI systems for optimal performance.

• Test and record water quality parameters, including hardness, pH, conductivity, and chemical concentrations.

• Adjust chemical dosages and system settings to maintain specified water quality levels.

• Conduct regular inspections, preventive maintenance, and repairs on water treatment equipment.

• Troubleshoot system problems and perform corrective actions.

• Maintain accurate logs, records, and documentation for compliance and reporting.

• Manage inventory of treatment chemicals and supplies.

• Adhere to safety, environmental, and regulatory guidelines.

• Communicate effectively with facility management regarding system status and maintenance needs.

Basic Qualifications

• Must be able to obtain a TS/SCI Poly clearance

• Minimum 3-5 years of experience performing maintenance, troubleshooting, and repair of water treatment systems in commercial, industrial, mission-critical, or facilities environments.

• High school diploma or equivalent (associate’s degree or technical training in water treatment preferred)

• Experience with water treatment systems, especially chillers, RO, softeners, boilers, and DI systems

• Strong analytical and problem-solving skills

• Ability to follow standard operating procedures and safety protocols

• Good written and verbal communication skills

Preferred Qualifications

• Associate’s degree or technical training in water treatment preferred

• Certified Water Treatment Operator

• Chiller water treatment knowledge

Physical Requirements

• Ability to lift up to 50 lbs.

• Ability to stand, walk, bend, and reach for extended periods

• Work in varying environmental conditions (hot, cold, wet, or noisy areas)

EC-DAS

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:

August 6, 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 -

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.