Jump to Main Content

Flood Prevention Tips

Homeowners can help prevent basement floods by following these tips:

  • Slope ground water away from the home or property.
  • Seal window wells and cracks in floors and walls.
  • Direct water, using downspouts, at least 1.2 m away from the home.
  • Direct water from the footing drains to the storm sewer or pump it away from the foundation of the home.
  • Connect sump pumps to the storm sewer system or ensure that it empties onto the lawn.
  • Ensure water run-off flows to the ground surface or storm drainage system.
  • Install protective plumbing devices.
  • Seal and tighten cleanout caps and backwater valve caps.
  • Ensure service pipes between the municipal sewer main and the home are in good condition.
Protective plumbing devices assist in preventing sewage from entering basements. These devices are designed to provide a barrier to the flow of backwater and can significantly reduce the potential of basement flooding. Protective plumbing can range from sump pumps to backwater valves, which permit flow in one direction but prevent a return of flow in the opposing direction. Although these devices may help to protect against main sewer backups and basement floods, it is important to remember they are not fail-safe.

Installation of protective plumbing devices may require a building permit and must meet building code requirements. For more information contact the City Building Division at 705-759-5410 or by emailing building@cityssm.on.ca.

Handbook for Reducing Basement Flooding is available through the Institute for Catastrophic Loss Reduction. The document provides information on how to reduce your chances of having basement flooding.

If a basement flood occurs, the homeowner may wish to call Algoma Public Health at 705-759-5286 for assistance.
Share this page:

Contact Us

General Inquiry: 705-759-1567
PWT Office: 705-759-5201
GFL: 705-945-7554




128 Sackville Road
Sault Ste. Marie, ON
P6B 4T6

Our Team