Water and waste treatment plant operators – NOC : 9243

Unit Group

9243 Water and waste treatment plant operators

Water treatment plant operators monitor and operate computerized control systems and related equipment in water filtration and treatment plants to regulate the treatment and distribution of water. Liquid waste plant operators monitor and operate computerized control systems and related equipment in wastewater, sewage treatment and liquid waste plants to regulate the treatment and disposal of sewage and wastes. They are employed by municipal governments and industrial facilities. This unit group also includes waste treatment plant operators in composting plants and other waste management facilities.

Example Titles

environmental systems operator – water treatment

operator, water purification plant

process operator, liquid waste

sewage plant operator

waste treatment plant operator

wastewater treatment plant operator

water filtration plant operator

water treatment plant operator

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Main duties

Water treatment plant operators perform some or all of the following duties:

Operate and monitor computerized control systems and related equipment in water filtration and treatment plants to regulate the treatment and distribution of water
Monitor and inspect plant equipment and systems to detect equipment malfunctions and to ensure plant systems are operating normally
Read flow meters, gauges and other recording instruments to measure water output and consumption levels, bacterial content, chlorine and fluoride levels
Collect and test water samples for chemical and bacterial content, analyze test results and instrument readings and make adjustments to plant equipment and systems to ensure quality control
Provide verbal or written instructions for process control changes to waterworks system to ensure water produced meets standardized quality requirements
Perform security checks in plant and on grounds
Respond to public enquiries regarding water quality issues and emergencies
Complete and maintain plant logs, reports and statistics
May perform minor maintenance or assist skilled tradespersons with installation and repair of plant machinery
May measure, mix and transport chemicals to maintain feed stocks.

Liquid waste plant operators perform some or all of the following duties:

Operate and monitor computerized control systems and related equipment in wastewater treatment, sewage treatment and liquid waste plants to regulate the flow of sewage through settling, aeration and digestion tanks, and to treat and dispose of sewage and wastes
Patrol plant to check pumps, motors, filters, chlorinators and other plant equipment; monitor and read gauges, meters and other recording instruments to detect equipment malfunctions and ensure plant systems and equipment are operating within prescribed limits
Test and adjust chemical feed rates to ensure that disinfection processes meet quality standards
Collect waste and sewage samples, test and analyze results and make adjustments to plant equipment and systems as required
Perform security checks in plant and on grounds
Complete and maintain plant logs and reports
Perform preventive maintenance on plant equipment to ensure that the facility operates in accordance with required standards
May assist skilled tradespersons with installation and repair of plant machinery.

Employment requirements

Completion of secondary school is required.
College or industry training courses in chemistry, pollution control or related subjects are required.
Certification in water treatment and distribution (Levels I, II, III or IV depending on the certification level of the plant) is required for water treatment plant operators.
Certification in wastewater collection and wastewater treatment (Level I, II, III or IV depending certification level of the plant) is required for wastewater treatment plant operators.
Solid waste, landfill or compost facility operator certification may be required for operators in waste treatment plants.
Certification in workplace hazardous materials information system (WHMIS), transportation of dangerous goods (TDG), and courses in safety practices may be required.
On-the-job training is provided.
Previous experience as a worker in the water treatment or wastewater field may be required.

Additional information

There is limited mobility between water treatment plant and waste plant operators.
Progression to supervisory positions is possible with experience.

Classified elsewhere

Chemical engineers (2134)
Chemical technologists and technicians (2211)
Supervisors, petroleum, gas and chemical processing and utilities (9212)
Water and waste plant labourers (in 9613 Labourers in chemical products processing and utilities )
Waterworks and gas maintenance workers (7442)