### Ministry of the Environment, Conservation and Parks (MECP) Proposed Regulatory Changes

The Ministry of the Environment, Conservation and Parks is proposing regulatory changes that would allow it and system owners and operating authorities to act quickly to help ensure the province’s drinking water systems and sewage works have the staff needed to continue operations during an emergency. These proposed changes align with temporary measures we enacted during the COVID-19 pandemic and would only be available for use during an emergency that could affect continuity of water related services.

The proposed changes to Ontario’s drinking water and wastewater operator regulations under the *Safe Drinking Water Act, 2002* and the *Ontario Water Resources Act* include:

- Emergency related amendments that aim to help address drinking water and wastewater operator certification issues that may arise during an emergency or its aftermath and provide system owners and operating authorities of drinking water systems and wastewater facilities with temporary staffing options, while continuing to uphold strong environmental protection and ensuring the health and safety of Ontarians and the natural environment.
- Strike and lock-out related amendments that would formalize and clarify the process for owners and operating authorities of drinking water systems and wastewater facilities to request ministry Director’s direction and/or exemption from operator certification requirements during a strike or lock-out.
- Amendments to harmonize the circumstances under which the ministry Director may revoke or suspend a drinking water operator’s certificate or wastewater operator’s licence.

We invite you to view the full proposals on the Environmental Registry and provide your feedback by **July 2, 2021**:

- Proposed amendments to
**drinking water**operator and water quality analyst certification regulation to address impacts of emergencies (019-3513) - Proposed amendments to
**wastewater**operator licensing regulation to address impacts of emergencies (019-3515)

MECP staff will continue to support you during this difficult time. Please contact your local ministry district office if you are experiencing operator staffing shortages that may lead to a break in continuity of operations, so that we can discuss potential options to help ensure continued safe operations.

Ontario’s drinking water remains among the best protected in the world. Working with our partners and municipalities, we will continue to ensure our drinking water is held to Ontario’s high safety standards, and that the environment continues to be protected.

If you have any questions, please email: operator.certification.moe@ontario.ca

Disponible en français.

Read More### Study Guides for Examinations, Math Problems and Practice Quizzes

Are you preparing for upcoming examinations? Recommended study materials are available through the Ontario Water and Wastewater Certification Office (OWWCO) Bookstore.

Examination study guide bookstore

Additional resources have been provided below and are intended to help operators prepare for exams. They will not replace the appropriate training and experience an operator should have. These resources will not completely cover all exam subject areas.

**Formula and Conversion Tables**

Basic Water and Wastewater Formulas

**Practice Quizzes**

5 Common Questions on Water Treatment Operator Certification Exam

Sample Exam Questions and Recommended References for ABC’s Very Small Water System Exam

Sample Exam Questions for ABCs Computerized Exams

Water Plant Operator Training Program – Operator-in-Training

Water Plant Operator Training Program – Class 1 Certification

Operator-in-Training Practice Quiz 1

Operator-in-Training Practice Quiz 2

Operator-in-Training Practice Quiz 3

Test Your Knowledge of Centrifugal Pumps – Certification Quiz

Wastewater Treatment Operator Certification Exam – 4 Practice Problems

Water Distribution Class 1 – Install Units Quiz

Water Distribution Class 1 – Monitor Water Quality Quiz

Water Distribution Class 1 – Operate and Maintain Equipment Quiz

Water Distribution Class 1 – Perform Administrative Duties Quiz

Water Distribution Class 1 – Safety Quiz

Water Distribution Class 1 – System Design Quiz

Water Distribution Operator Certification Exam – 4 Practice Problems

Water Treatment Class 1 – Evaluate and Maintain Equipment Quiz

Water Treatment Class 1 – Evaluate Characteristics of Source Water Quiz

Water Treatment Class 1 – Laboratory Analysis Quiz

Water Treatment Class 1 – Monitor, Evaluate and Adjust Treatment Processes Quiz

Water Treatment Class 1 – Operate Equipment Quiz

Water Treatment Class 1 – Perform Administrative Duties Quiz

Water Treatment Class 1 – Safety and Emergency Preparedness Quiz

**Water Math**

Chemical Dosing Math Problem – Example 1

Chemical Dosing Math Problem – Example 2

Chemical Dosing Math Problem – Example 3

Chlorine Contact Time Calculations

Geometry Math – Example 1 Cylinder (Pipe)

Geometry Math – Example 1 Cylinder (Tank)

Geometry Math – Example 1 Rectangle (Tank)

Geometry Math – Example 2 Cylinder (Tank)

Geometry Math – Example 2 Rectangle (Tank)

How to calculate detention time

Operator-in-Training Math Practice Quiz 1

Operator-in-Training Math Practice Quiz 2

Operator-in-Training Math Practice Quiz 3

Operator-in-Training Math Practice Quiz 4

Operator-in-Training Math Practice Quiz 5

Operator-in-Training Math Practice Quiz 6

Operator-in-Training Math Practice Quiz 7

Operator-in-Training Math Practice Quiz 8

Operator-in-Training Math Practice Quiz 9

Operator-in-Training Math Practice Quiz 10

Operator-in-Training Math Practice Quiz 11

Operator-in-Training Math Practice Quiz 12

Problem Solved: Calculating Tank Volume – Water Treatment, Distribution System and Wastewater Math

Problem Solved: Calculating Trench Volume – Distribution System Math

Problem Solved: Calculating Volume Removed – Distribution System Math

Problem Solved: Chemical Dose with Chlorine Tablets – Water Treatment Math

Problem Solved: Chemical Per Day Formula – Distribution System Math

Problem Solved: Chlorine Demand – Distribution System Math

Problem Solved: Chlorine Dose – Water Treatment

Problem Solved: Chlorine Per Day – Distribution Math

Problem Solved: Detention Time – Water Treatment

Problem Solved: Flow Rate Formula – Water Treatment, Distribution and Wastewater Math

Problem Solved: Chemical Blending – Water Treatment

Problem Solved: Chemical Solutions – Water Treatment

Water Math Bonus – Specific Capacity & Detention Time

Water Math Bonus – Surface Loading Rate & Unit Filter Run Volume

Water Math: Calculating Water Level – Texas Class B

Water Math: Calculate Volume in Gallons – Texas Class D

Water Math: Chlorine Demand – Texas Class C

Water Math: Chlorine Demand – Texas Class D

Water Math: Chlorine Dosage (lbs per day) – Texas Class D

Water Math: Chlorine Dosage – Texas Class D

Water Math: Dirt Removal – Texas Class C

Water Math: Feet of Head – Texas Class C

Water Math: Feet of Head – Texas Class D

Water Math: Gallons to Tons Conversion – Texas Class C

Water Math: GPD to MGD – Texas Class C

Water Math: GPM to MGD – Texas Class D

Water Math: Meter Calculations – Texas Class C

Water Math: MGD Flow from Multiple Wells – Texas Class B

Water Math: MGD to GPM – Texas Class C

Water Math: MGD to GPM – Texas Class D

Water Math: Pipe Volume Calculation – Texas Class C

Water Math: Sections of Pipe Required – Texas Class D

Water Math: Static Water Level – Texas Class B

Water Math: Stock Solution – Texas Class B

Water Math – Tank Capacity – Texas Class C

Water Math: Well Drawdown – Texas Class C

Water Math: Well Drawdown – Texas Class D

Water Math: Well Production – Texas Class C

WSO Water Treatment Grade 1: Operator Math 1, Ch. 2

WSO Water Treatment Grade 2: Operator Math: Volume Measurement, Ch. 2

**Wastewater Math**

California Grade 1 Wastewater Math

California Grade 2 Wastewater Math

California Grade 3 Wastewater Math

California Grade 4 & 5 Wastewater Math

Digester Loading Rate Calculation

How to Calculate F-M Ratio – Wastewater Math

How to Calculate Organic Loading into a Pond – Wastewater Math

How-to Use Excel for Calculations and Conversions for Wastewater Math – Wastewater Dan videos

Intro to Velocity Calculations and Hydraulic Retention Time – Part 1

Intro to Velocity Calculations and Hydraulic Retention Time – Part 2

Intro to Velocity Calculations and Hydraulic Retention Time – Part 3

Intro to Velocity Calculations and Hydraulic Retention Time – Part 4

Intro to Velocity Calculations and Hydraulic Retention Time – Part 5

Intro to Velocity Calculations and Hydraulic Retention Time – Part 6

Problem Solved: BOD – Wastewater Math

Problem Solved: BOD Removal Efficiency – Wastewater Math

Problem Solved: Calculating Tank Volume – Water Treatment, Distribution System and Wastewater Math

Problem Solved: Calculating VS Pumped to a Digester – Wastewater Math

Problem Solved: Chlorinator Feed Rate – Wastewater Math

Problem Solved: DAF Solid Loading Rate – Wastewater Math

Problem Solved: Detention Time – Wastewater Math

Problem Solved: Energy Savings Due to Pump Efficiency – Wastewater Math

Problem Solved: Flow Rate Formula – Water Treatment, Distribution and Wastewater Math

Problem Solved: Flow Rate (Gr. 1) – Wastewater Math

Problem Solved: Flow Rate (Gr. 3) – Wastewater Math

Problem Solved: Grit Removal Rate – Wastewater Math

Problem Solved: Heat Value BTUs – Wastewater Math

Problem Solved: MCRT – Wastewater Math

Problem Solved: MLSS – Wastewater Math

Problem Solved: Organic Loading – Wastewater Math

Problem Solved: Oxygen Transfer to Water – Wastewater Math

Problem Solved: Percent Solids Recovery – Wastewater Math

Problem Solved: Pond Hydraulic Loading – Wastewater Math

Problem Solved: Price Per Day Calculation – Wastewater Math

Problem Solved: Pump Discharge Rate – Wastewater Math

Problem Solved: Suspended Solid Weight Per Day – Wastewater Math

Problem Solved: Volatile Solids Reduction – Wastewater Math

Problem Solved: Volume – Wastewater Math

Pump Run Time to Reduce Mixed Liquor Suspended Solids (MLSS) Calculation

Volatile Suspended Solids Loading Rate to Anaerobic Digester Calculation

Wastewater Calculations – Problem of the Day

**Theory **

Backflow, Backpressure and Backsiphonage

Disinfection Breakpoint Chlorination

Project Management: Mission and Vision

Project Management: Planning the Project

Project Management: Steps in Managing a Project

Project Management: The Role of a Project Manager

Project Management: Work Breakdown Structure

Reduced Pressure Zone (RPZ) Valve – Backflow Prevention

Wastewater Collection: Method of Conveyance

Wastewater Treatment: Data and Records

Wastewater Treatment: Flow Equalization

Wastewater Treatment: Odour Control Methods

Wastewater Treatment: Preliminary Treatment

Wastewater Treatment: Grit Removal

Water Collection System: Design, Layout and System Capacity

Water Collection System: Low Pressure System Components

Water Collection System: System Components

Water Distribution: Backflow Prevention

Water Distribution: Cross Connection Control

Water Distribution: Fire Hydrant Parts and Classification

Water Distribution: Hydrant Installation and Types of Fire Hydrants

Water Distribution: Pipe Joints

Water Distribution: Pipe Material

Water Distribution: System Design and Layout

Water Distribution: Valve Modes of Operation

Water Distribution: Valve Types

Water Treatment: Chemical Feed Equipment and Flash Mixing

Water Treatment: Coagulant Aids

Water Treatment: Coagulation Chemistry Basics

Water Treatment: Coagulation Flocculation Basics

Water Treatment: Coagulation Process Operation and Jar Testing

Water Treatment: Flocculation Process Operation

Water Treatment: Well Construction

Water Utility Management: Project Management

Read More

### Mandatory Certificate Renewal (MCR) Course Resources

This course provides an overview of key regulatory updates and a review of requirements supporting the improvement of non-compliances identified in MECP inspections. The role of Ontario’s operators in protecting public health will be highlighted, and participants will be introduced to the concept of Operator Ethics.

**Resources**

AWWA Free Water Audit Software

CBC – Carleton Place Crash on Highway 7

GeoPro Lone Work Safety System

Hamilton’s Corrosion Control Program

Information for Property Owners about Lead Water Service Line Replacement

Ontario Traffic Manual – Book 7 – Temporary Conditions

Disponible en français.

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