Water Table

Understand the water table in Canadian real estate — how it affects construction, drainage, and property risk in flood-prone or rural areas.

Water Table

May 22, 2025


What is the Water Table?

The water table is the level below the surface of the ground where soil and rock are fully saturated with water.

Why the Water Table Matters in Real Estate

In Canadian real estate, a high water table can affect drainage, basement flooding risk, foundation design, and the long-term integrity of a property.


Key implications include:
  • May require sump pumps or drainage systems
  • Affects location of septic systems and wells
  • Can increase risk of water infiltration in basements


Builders and buyers should assess the local water table before constructing or purchasing homes in areas with poor drainage.


Understanding the water table is essential for site planning, flood prevention, and long-term home maintenance.

Example of the Water Table in Action

A buyer building a rural home orders a geotechnical report to confirm the water table is low enough for a standard basement and septic system.

Key Takeaways

  • Subsurface level where ground is saturated.
  • Impacts basements, foundations, and drainage.
  • May influence construction and maintenance.
  • Essential for rural or flood-prone areas.
  • Requires proper mitigation if high.

Related Terms

  • Floodplain
  • Drainage System
  • Foundation
  • Geotechnical Survey
  • Sump Pump

Additional Terms

Public Realm Improvements

Public realm improvements are enhancements to public spaces such as sidewalks, parks, plazas, and streetscapes, often funded or contributed by. more

Mortgagee in Possession

A mortgagee in possession is a lender who takes control of a property after borrower default, but before foreclosure or power of sale. The lender. more

Lease Surrender Agreement

A lease surrender agreement is a negotiated contract between a landlord and tenant that ends a lease before its scheduled expiration. Terms may. more

Green Infrastructure

Green infrastructure refers to natural or engineered systems that manage stormwater, reduce heat, and improve sustainability in developments.. more

Escrow Holdback

An escrow holdback is a portion of funds withheld at closing and held in escrow until specific conditions are met, such as completion of repairs,. more

Underused Housing Tax

The Underused Housing Tax (UHT) is a federal annual 1% tax on the value of vacant or underused residential property owned by non-resident,. more

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