2024 Ontario Building Code: Water Supply and Plumbing Requirements for Dwelling Units
Sarah's Expert Insight
OBC Compliance Specialist
"Ensuring compliance with Section 9.31 is critical for passing inspections in London, Oakville, and Muskoka. At empcontracting.ca Inc. your construction contractor in London, Ontario, we focus on high-efficiency hot water equipment and proper basement drainage to protect your investment and prevent moisture issues. Adhering to these plumbing standards is not just a legal requirement but a foundation for long-term home durability and occupant comfort."
Navigating the 2024 Building Code Compendium for residential plumbing ensures your home meets provincial safety and comfort standards. Here is a detailed breakdown of the requirements for water distribution and service heating under Section 9.31.
9.31.3. Water Supply and Distribution Systems
In every dwelling unit where a drinking water system is available, a distribution system is mandatory. This ensures that essential utilities are accessible throughout the living space.
Required Connections for Hot and Cold Water
When executing a renovation or new build, empcontracting.ca Inc. your construction contractor in London, Ontario ensures piping for both hot and cold water is connected to:
- Kitchen sinks and lavatories
- Bathtubs and showers
- Slop sinks and laundry areas
Additionally, cold water piping must be specifically run to every water closet (toilet) to satisfy health and sanitation requirements.
9.31.4. Required Plumbing Fixtures and Facilities
The code mandates that every dwelling unit must be equipped with a kitchen sink, lavatory, bathtub or shower, and a water closet whenever a water distribution system is available.
Laundry and Hot Water Provisions
Laundry facilities must be provided within the unit or in a conveniently accessible location within the building. Furthermore, a consistent hot water supply is mandatory, and the delivery system must conform to the safety requirements in Subsection 7.2.10.
Basement Floor Drains
Where gravity drainage to a sewer, drainage ditch, or dry well is possible, a floor drain is a requirement for any basement forming part of a dwelling unit. This is a critical flood-prevention measure for Ontario homes.
9.31.6. Service Water Heating Equipment
To meet the requirements of Article 9.31.4.2., water heating equipment must be installed in strict conformance with Part 7 of the OBC and must provide an adequate supply of hot water for the occupants' needs.
Disclaimer: This content is generated from the Ontario Building Code for educational purposes. Always consult with a licensed professional engineer or your local building department before starting any construction project in London, Ontario.