Skip to Main Content

High Water Table

The specific level where the ground below will be saturated with water if you go any lower.

Schedule Free Inspection

How A High Water Table Affects Your Home

What Is a Water Table?  

Flooded grass in yard

A water table, or simply groundwater table, is the boundary between the soil and the area where the rocks or soils get saturated permanently. It usually follows the ground surface, rising below hills and falling at valleys.   

Water tables fluctuate depending on the seasons and from year to year. They go up when they receive more water than they can drain off. This can be due to heavy downpours or excess water from higher elevations. Additionally, they can also fall when people draw huge amounts of water from nearby wells. 

Signs of a High Water Table  

Keep an eye out for the following signs.  

Basement Flooding:  

If you and your neighbors experience basement flooding right about the same time, that’s a clear indication the water table nearby is pretty high.  

Standing Water:  

When rainwater or melt-offs fail to percolate through the soil, it’s likely the surface is already saturated due to a high water table.  

Damp Wooden Floors & Walls: 

 Watermarks on your floor and walls are a sign of excess hydration. The water table might be pushing up and wetting the subfloor area. Older homes with timber skirtings are likely to suck up moisture and experience condensation, creating the illusion of rising dampness levels.  

Septic System Failure: 

 A high water table near your septic tank can impede the drain field’s capacity to absorb and filter wastewater. When this happens, your septic system will back up and fail. 

How a High Water Table Affects You  

A high water table can impact your home in two main ways.  

Foundation Shift: 

 A high water table increases hydrostatic pressure on your basement floor and walls, making them prone to leaks. If the pressure is left to build up, it can shift your foundation walls and structures like decks.   

Humidity Issues:  

A high water table has the potential to increase humidity levels in your home. This can lead to a host of problems, including wood rot, mold growth, and rust. The rising humidity levels will also degrade your wooden structures.   

Possible High Water Table Damage Solutions  

Dealing with a high water table can be frustrating. Here are solutions that can help mitigate their effects on your home.  

Yard Drainage: 

Surface and subsurface drainage can help channel stormwater runoffs away from your home so it won’t infiltrate the foundation or weaken the structure.  

Basement and foundation waterproofing: 

Solutions such as sump pumps and interior drains can help mitigate water damage, which is prevalent in areas with high water tables.                                                                                                         

Natural Drainage Systems:  

Plants and lawns are useful as leaves and blades slow the runoff. Also, their roots absorb the water. Combining yard drainage with surface drainage helps slow down runoffs and water infiltration.  


These are shallow depressions that collect stormwater and ditch them on the municipal drain. Depending on your yard’s grading, they can carry the water towards the front or rear of the property.   

If your home sits close to a high water table, don’t fret. Contact the expert team at Groundworks for a free inspection and repair estimate. These professionals can perform the necessary foundation repairs and basement waterproofing to mitigate water damage. We use industry-approved solutions that also provide lasting results, so your home stays safe and dry. 

Publish Date:

Last Modified Date: