Small Drinking Water Systems Zone
The Walkerton Clean Water Centre (WCWC) is committed to supporting the owners and operators of Ontario’s small systems.
WCWC is the course administrator for the Ministry’s Operation of Small Systems for Trained Persons (O. Reg. 170/03) course. Successful completion of this course qualifies the participant a “Trained Person“ under O. Reg. 170/03: Drinking Water Systems.
WCWC administers the Operation of Limited Systems course for individuals seeking to become Limited System Operators. This course is a prerequisite for obtaining a Limited System Certificate under O. Reg. 128/04: Certification of Drinking Water System Operators and Water Quality Analysts. For more information, refer to the guideline titled “Become a limited systems operator“.
Small drinking water systems that are regulated under Ontario Regulation 319/08 are assessed by Public Health Inspectors (PHIs). The PHI will issue a directive outlining what the owner/operator of the system must do to keep the drinking water safe. The directive may include, but is not limited to, water testing requirements, treatment requirements and operator training.

If you are not sure of your training requirements, you can review the following information or contact the Ministry of the Environment, Conservation and Parks (MECP) or local Public Health Unit:
- The MECP Guides for Designated and Limited Systems and Ministry of Health fact sheets
- Contact your local MECP office and/or Public Health Unit
- Contact WCWC

Trained Persons
Learn more about the requirements to become a “Trained Person” for certain categories of drinking water systems.

Limited Systems
Learn more about the requirements to become a Limited System Operator for certain categories of drinking water systems.

O. Reg. 319/08 Systems
Learn more about small drinking water systems that are regulated under Ontario Regulations 318/08 and 319/08 of the Health Protection and Promotion Act.
Overall great course content. Trainers very knowledgeable!
Participant, WCWC Small Systems Hands-on Workshop