PLANT TECHNICIAN WASTEWATER

Toronto, City of

Posted today|No closing date listed

About this job

Full-time temporary plant technician role at Toronto's wastewater treatment facilities, progressing to permanent after obtaining Class 4 WWT Certification. Operates and maintains wastewater treatment equipment, monitors processes, performs sample analysis, and responds to operational emergencies across three treatment plants.

Key Responsibilities

Adjust, inspect and evaluate wastewater treatment processes and equipment to optimize performance and maintain regulatory compliance
Operate and monitor plant process equipment including valves, pumps, compressors, boilers, incinerators, chemical dosing systems, and HVAC systems
Make process adjustments, respond to alarms and emergency situations to ensure safe and compliant operation
Collect samples, perform routine tests and analysis, and maintain records using manual or computerized systems
Identify operational changes and implement corrective actions; perform preventative maintenance and minor electrical/instrumentation work

Qualifications

Grade 12 diploma or equivalent and valid Class IV Wastewater Treatment Operator's Certificate (written exam under Ontario Regulation 129/04), OR minimum 2-year diploma/degree/certificate in environmental science, biology, chemistry from recognized Canadian institution with ability to obtain Class IV certification
Familiarity with environmental regulations applicable to wastewater treatment facility operation
Knowledge of activated sludge process, anaerobic digestion, dewatering, incineration, disinfection and nutrient removal principles
Ability to work with process control automation systems and interpret process information
Ability to alter unit process operations manually or using computerized technology

At a glance

15 positions open: 8 at Ashbridges Bay Treatment Plant (9 Leslie Street), 2 at Humber Treatment Plant (130 The Queensway), 5 at Highland Creek Treatment Plant (51 Beechgrove Drive)

Full-time temporary, transitioning to permanent after Class 4 WWT Certification

40 hours per week, Monday to Sunday, rotating 12-hour and/or 8-hour shifts

Union affiliation: L416 Outside

Posting period: September 29–October 14, 2026

Summarized from the official posting. See the full posting below or apply for complete details.

Job details

Salary

Experience Level

Entry level

Municipality

Toronto, City of

Province

Ontario

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Posting

Posted

October 7, 2026

Still listed

Confirmed on the employer's site October 7, 2026

Deadline

No closing date listed

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