Regional Stormwater Management
Find my pathwayAsk RSM
RSM site search

Search training, credentials, standards and local resources.

Start typing to search the RSM knowledge and professional-development system.

Basement flooding

Protection works best when the systems are understood together.

Backwater valves, sump systems, surface drainage, foundation drainage, sewer laterals, power backup and maintenance may each play a role depending on the property.

Open homeowner guidanceAsk RSM
Ontario-wide Source-aware Clear credential scope
Protection works best when the systems are understood together.
Published by: RSMLast reviewed: 2026-07-19Scope: Canada, with Ontario programme depth

Understand the pathway

Separate surface water, groundwater, sewer backup, drainage and equipment issues.

Explore

Know the limits

No single device or maintenance action addresses every flood pathway.

Explore

Start with official local information

Use municipal, regional and conservation-authority sources for current programmes and emergencies.

Explore
Safety first

During active flooding, prioritize people, electrical safety and official emergency instructions. Do not enter unsafe water or work on energized equipment.

Clear information helps people prepare before the water arrives.

Public education

Clear information helps people prepare before the water arrives.

Homeowners and communities need understandable explanations, maintenance habits, emergency awareness and reliable local sources.

Find the right pathway

Regional Stormwater Management

Build knowledge. Strengthen practice. Connect Ontario.

Explore RSM training, certification, standards, public education and municipal-resource pathways.

Ask RSMCertification pathways

Privacy settings

Choose how RSM measures website use.

Necessary storage supports core functions. Analytics helps RSM understand content performance. Advertising measurement supports campaign attribution when valid account IDs and consent are configured.