Ontario Water treatment operator oit Jobs – 19 Openings This Week

Operator, Water (OIT-IV)
York Region —Newmarket, ON
- $35.37–$55.28 an hour
- Full-time
- Mechanical knowledge
- Dental care
- Employee assistance program
7d
Treatment Operator (12-Month Contract)
City of Orillia —Orillia, ON
- $31.25–$34.89 an hour
- Contract
- Microsoft Word
- Microsoft Excel
- Microsoft Office
Quick apply
11d
Temporary Operator-In-Training (OIT), Water/Wastewater - Township of St. Clair
County of Lambton —Mooretown, ON
- $27.98–$33.33 an hour
- Heavy equipment operation
- High school diploma or GED
- Computer skills
8d
Continuous Opening System Operator / Operator-in-Training
Niagara Region —Thorold, ON
- $28.77–$40.44 an hour
- Weekends as needed
- Word processing
- Laboratory experience
- High school diploma or GED
Water & Wastewater Operator
Ontario Clean Water Agency —Aylmer, ON
- $24.88–$38.04 an hour
4d
Water and Wastewater Technician
Ontario Clean Water Agency —Mississauga, ON
- $26.51–$37.21 an hour
- Temporary
- Bilingual
- Basic math
- English
- Disability insurance
16h
Operator, Wastewater
York Region —Newmarket, ON
- $35.37–$55.28 an hour
- On call
- Mechanical knowledge
- Employee assistance program
Maintenance Operator
THE REGIONAL MUNICIPALITY OF DURHAM —Durham, ON
- From $36.24 an hour
- Overtime
- Microsoft Office
- High school diploma or GED
- In-person
Quick apply
Wastewater Operator
Town of Bradford West Gwillimbury —Bradford West Gwillimbury, ON
- $27.19–$48.61 an hour
- Full-time
6d
Millwright and Operator (Skilled Trades & Operator)
York Region —Newmarket, ON
- $51.25–$55.28 an hour
- Temporary
- Engineering
- Laboratory experience
- Maintenance
- Employee assistance program
12d
Process & Compliance Technician
Ontario Clean Water Agency —Aylmer, ON
- $1,289.12–$1,534.12 a week
- On call
- Bilingual
- English
- Microsoft Office
- Disability insurance
5d
Utility Plant Electrician Operator
Ontario Clean Water Agency —Wasaga Beach, ON
- $34.62–$37.58 an hour
- Overtime
- Bilingual
- English
- Project management
- Disability insurance
Mechanic Operator
Ontario Clean Water Agency —Belleville, ON
- $24.88–$38.04 an hour
4d
Operations Manager
MPS Group, Inc. —Oakville, ON
- Weekends as needed
- Sales
- Microsoft Office
- Manufacturing
Quick apply
Licensed Millwright, Wastewater
The City of Guelph —Guelph, ON
- $39.62 an hour
- Full-time
- Microsoft Word
- Microsoft Excel
- Schematics
- Dental care
- Tuition reimbursement
11d

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Based on your search for water treatment operator oit

Operator, Water (OIT-IV)
York Region —Newmarket, ON
Demonstrated field experience working directly in water/wastewater facilities with completion of training courses and certification(s) as designated by…
$35.37–$55.28 an hour
7d
Treatment Operator (12-Month Contract)
City of Orillia —Orillia, ON
Working knowledge of current City by-laws, ministry standards, and provincial and federal regulations and guidelines related to water and wastewater treatment.
$31.25–$34.89 an hour
Quick apply
11d

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Operator, Water (OIT-IV)
York Region —Newmarket, ON
Demonstrated field experience working directly in water/wastewater facilities with completion of training courses and certification(s) as designated by…
$35.37–$55.28 an hour
7d
Operator, Wastewater
York Region —Newmarket, ON
A valid Class “G” drivers’ license and clean driving record. Operator-in-Training Ontario MECP certification in wastewater treatment and wastewater collection.
$35.37–$55.28 an hour

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Operator, Water (OIT-IV)

York Region -
Newmarket, ON

Apply Now

Job details

Full-time
$35.37–$55.28 an hour
7 days ago

Qualifications

Post-secondary education
Environmental Science
Mechanical knowledge

Full job description

Status

Permanent Full-Time

Temporary - Approximate length of assignment, in months

Type of Position

a Replacement

Start Date

Salary

Per hour

Salary Grade

$51.25 - $55.28

Department

York Region -> Public Works -> Water and Waste Water

Location

145 Harry Walker Parkway, - Newmarket, ON L3Y 7B3 CA (Primary)

Job Description (E)

ABOUT US

Almost 1.2 million residents call York Region home, making it one of the largest regions in Canada – and the fastest growing with a population that’s expected to grow to more than 2 million by 2041. Our geography, which is comprised of about 1,800 square kilometers over nine different municipalities, is as beautiful, interesting and diverse as our people. Local government is organized in a two-tier structure and we work together with our local municipalities to provide residents and businesses access to a broad selection of services and resources.

WHAT WE OFFER

Consistently named one of Canada’s Best Employers by Forbes, we offer a collaborative, progressive workplace that takes pride in our organizational culture and is committed to living The 13+ Factors of Psychological Health and Safety in the Workplace – aligned with our vision to create strong, caring and safe communities both within and outside our walls.

Defined Benefit Pension Program - With the Ontario Municipality Employees Retirement System (OMERS) defined benefit pension plan, you can confidently retire knowing that you will have income for life. Eligibility from date of hire as a full-time employee and includes employer-matched contributions.
Employer of Choice - Recognized as the highest-ranking government employer in Canada and fourth overall among 300 organizations.
Benefits and Wellness - Employees and their loved ones have access to a comprehensive employer-paid benefits plan that includes extended health, dental and life insurance, access to a 24/7 Employee and Family Assistance Program and corporate discounts and purchase plans for day-to-day products and services.
Inclusive and Diverse Workforce - We’re committed to fostering an environment that celebrates all dimensions of diversity and ensures everyone can develop to their full potential, participate freely in society and live with respect, dignity and freedom from discrimination. Our robust Inclusion, Diversity, Equity and Accessibility program continues to grow, and has been recognized by the United Nations and many other organizations for our leadership.

Salary OIT - IV : $35.37 - $55.28 per hour

ABOUT THE ROLE

Reporting to the Supervisor, Operations, Central Area and under the day-to-day work direction of the Senior Team Lead, performs operations and maintenance activities supporting the optimal operation of ground water systems, water treatment plants, associated booster stations and the transmission system to meet Provincial Acts and Regulations and Regional standards.

WHAT YOU'LL BE DOING

Performs operations and maintenance activities supporting the optimal operation of wastewater treatment plants and associated pumping stations, and the optimal operation of ground water systems, water treatment plants, associated booster stations and the transmission system; enters sewers, wet wells and treatment tanks or chambers for the purpose of performing maintenance.
Performs routine maintenance (related to CLAIR - Cleaning, Lubricating, Adjustment, Inspections and minor Repairs), at water treatment plants and associated pumping stations, and transmission system components.
Performs daily checks and analysis on the operation of equipment and makes adjustments to process controls to optimize effluent quality and ensure compliance with applicable Provincial regulations.
Performs “stake-out/locates” for all water mains, collection systems, treatment plants and assists the Senior Team Lead in preparing inspection reports on the condition of linear and discrete assets.
Participates in the design, installation, commission and handover of new equipment to ensure all equipment is installed correctly and functions efficiently as per relevant asset management standards.
Provides daily guidance and supervision of tasks appropriate to the level of certification for operators and co-op students enrolled in education programs, on-going certification or as required.
Provides input to reports as assigned.
Maintains data logs and performs in-plant laboratory analysis including MOE regulatory compliance sampling and submission, in accordance with prescribed Certificates of Approval, Permits to take Water, water and waste water industry standards, policies and practices.
Ensures that documentation logs are completed legibly and accurately.
Conducts sampling activities and records results to ensure adherence to applicable Provincial Acts and Regulations.
Participates on committees, task forces or work groups as assigned.
Responds to inquiries, complaints and concerns in a timely and professional manner to assure optimal service.

WHAT WE'RE LOOKING FOR

Post Secondary Diploma/Certificate in Environmental Sciences (2 or 3 yrs) or approved related combination of education and experience.
MECP License level OIT-4 for Water Treatment and a level OIT-4 License for Water Distribution and Supply, including experience as designated by Provincial Acts and Regulations and as it applies to the Central Facility.
Demonstrated field experience working directly in water/wastewater facilities with completion of training courses and certification(s) as designated by Provincial Acts and Regulations, and field experience and certification(s) Level to the legislated standard required at the assigned facility.
Demonstrated experience in mechanical electrical equipment and pump maintenance procedures.
A valid Class “G” drivers’ licence, clear of serious offences under the Highway Traffic Act.
Demonstrated knowledge of system hydraulics.
As a condition of employment, candidates are required to complete a medical assessment that measures their functional abilities and confirms their immunization status. This is in accordance with the requirement laid out under clause 25(2)(h) of the Occupational Safety and Health Act (OSH Act)
Ability to perform mathematical calculations to determine chemical dosages and flow rates; record accurately and maintain legible records.
Physical stamina and ability to climb on or into elevated tanks, work in confined spaces, manholes, sewers, treatment tanks, and wet wells, and work with hazardous chemicals, near high voltage electrical equipment.
Ability to physically withstand long periods of standing, walking, climbing and heavy lifting; work in a noisy environment and all/extreme weather conditions.
Ability to wear a Self-Contained Breathing Apparatus to enter confined spaces.
Availability and ability to respond to emergency situations and work outside normal scheduled hours, as required.

Council Approval Date

Scheduled Weekly Hours

Scheduled Shifts

7:30 a.m. to 4 p.m.

Operational Hours

Close Date

June 15, 2026

# of Hires Needed

Union

CUPE Local 4900

Please apply online by 5:00PM EST of the closing date indicated above.

All employment opportunities are recorded on a 24-Hour Career Line and may be accessed by calling 1-877-464-9675 ext. 75508. We thank all candidates for their interest; however, only those selected for an interview will be contacted. Please be advised, York Region uses email as the primary means of communication with candidates and does not use AI technology in any part of the recruitment process. Please ensure your email address is up to date, checked frequently (including your spam folder), and accepts messages from unknown users.

York Region is an equal opportunity employer committed to an inclusive, barrier-free recruitment and selection process. We respect, encourage and celebrate our diversity, aiming to build a qualified workforce that reflects the population we serve. Should you require an accommodation under the Human Rights Code during the recruitment and selection process, including accessible formats and communication supports, please email [email protected] or call 1-877-464-9675 extension 75506. Accommodations for applicants with disabilities are available upon request during recruitment processes and throughout employment.

Apply Now

Refine Your Search

water treatment operator oit jobs in ontario

Operator, Water (OIT-IV)

Treatment Operator (12-Month Contract)

Temporary Operator-In-Training (OIT), Water/Wastewater - Township of St. Clair

Continuous Opening System Operator / Operator-in-Training

Water & Wastewater Operator

Water and Wastewater Technician

Operator, Wastewater

Maintenance Operator

Wastewater Operator

Millwright and Operator (Skilled Trades & Operator)

Process & Compliance Technician

Utility Plant Electrician Operator

Mechanic Operator

Operations Manager

Licensed Millwright, Wastewater

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