What Does a Water Treatment Operator Do?
As long as people turn on a tap and expect clean water, plants will need operators to make sure every gallon is treated, tested and safe. Water treatment operators run the pumps, filters and chemical feeds that turn river, lake or well water into drinking water, and many also look after the plant's equipment. Plants often need round-the-clock staffing.
Also known as: Water Treatment Maintenance Specialist
Water Treatment Operator Duties and Responsibilities
The primary responsibilities of a water treatment operator include:
- Monitor treatment processes on the SCADA screen and adjust chemical feed rates as water quality changes.
- Collect samples and test turbidity, pH and chlorine residual at set intervals through each shift.
- Backwash filters and clean basins, clarifiers and intake screens on schedule.
- Handle chlorine, coagulants and other chemicals safely, and log every delivery and dose.
- Maintain pumps, chemical feeders and valves, and replace worn seals and tubing.
- Record flows, levels and lab results for the monthly reports sent to state regulators.
- Respond to alarms for low pressure, high turbidity or equipment failure at any hour.
- Calibrate analyzers and meters so readings stay accurate for compliance.
- Flush hydrants and dead-end mains to keep water fresh in the distribution system.
- Walk the plant each shift to check for leaks, odd noises and chemical spills.
Required Skills and Qualifications
To succeed as a water treatment operator, you will need the following skills and qualifications:
- State water treatment operator certification
- Basic chemistry and lab testing
- SCADA monitoring
- Math for chemical doses and flow rates
- Mechanical skills for pumps and feeders
- Careful, honest record keeping
- Alertness on overnight and weekend shifts
- Chemical safety and confined-space training
Education and Training
To run a public water plant, in most states you will need a state operator certificate, earned by passing exams and logging supervised hours at a plant. Operators usually come in with a high school diploma and learn on the job, though some start out by completing a water technology certificate at a community college. Higher certificate grades open bigger plants.
Salary and Job Outlook
Typical pay: $48,040 - $74,780 per year, with a median of $60,020.
The range covers the middle half of earners nationwide. Source: U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics, May 2025, Water and Wastewater Treatment Plant and System Operators.
Employment of water and wastewater treatment plant and system operators is projected to decline about 6 percent from 2025 to 2035, according to BLS, partly because automated controls let plants run with smaller crews. Retirements still leave about 10,000 openings a year, according to the same projections, and small towns often struggle to find certified operators.
Outlook source: U.S. Bureau of Labor Statistics, Employment Projections, 2025 to 2035, Water and wastewater treatment plant and system operators.