Understanding Well Systems: Bored Wells vs Drilled Wells

Mon, 28 Sep by wayneh@edmontonlakeproperty.com


If you’re planning to buy a piece of Edmonton real estate that isn’t connected to a municipal water system – or if you want a dedicated water supply for recreational or agricultural purposes – you’ll need to plan for the installation of a well on your property. There are multiple kinds of well systems, and you’ll want to ensure you choose the right kind of system for your property, as choosing the wrong kind of well system could jeopardize the quality of your water. So how can you know if you’re installing the right kind of well? Here’s what you need to know.

Bored Wells: Large-Diameter Wells for Shallow Aquifers

A bored well is a kind of well that is created using a large-diameter bore. Bored wells are typically built in areas where aquifers (naturally forming areas in the soil where water is found) are quite shallow and offer low yields. If your aquifer only produces 1,400 gallons per day, for instance, you’ll want to use a bored well, as a bored well doubles as a storage reservoir to keep the water supply constant during peak demand hours.

Bored wells can typically be built using a buried slab or a concrete collar. Buried slab construction is the most common method. It involves extending the upper well casing to 10 feet below the ground and embedding a tapered hole into the well. This method also involves a 12-inch thick bentonite seal that spans the diameter of the borehole. The upper well casing is then filled with compacted earth, which will cause surface water to drain away from the well.

Drilled Wells: A Smaller Diameter for a Deeper Well

In contrast, a drilled well is a kind of well that works best with deep aquifers. Drilled wells are the ideal option for overburden wells and bedrock aquifers – aquifers where water fills the space between the soil and particulate or aquifers located in gaps between bedrock. Most drilled wells involve a screen filter that allows groundwater to fill the well while keeping particulate out. Drilled wells typically require something called surging before they can be used. During surging, the contractor will operate the well pump for an extended period in order to disturb the water enough to remove sediment. Given the fact that they are easier to grout and the casing joints are more secure, drilled wells are less vulnerable to contaminants than bored wells.

Choosing a well system can be challenging, especially if you’re not someone who is well versed in water and soil processes. But if you’re planning to buy a property that isn’t connected to a municipal water supply, you’ll need to understand the key differences in well types. As a general rule, drilled wells are the preferred option when possible, but bored wells work best in areas with shallow, low-yield aquifers. Buying a home is a complicated enough process when wells aren’t involved. If you’re looking for an Edmonton property with well water, you’ll want an experienced real estate agent on your side. Call me today at 780.991.5107 to find your new Edmonton recreational property and have peace of mind knowing your property’s well is up to code.

Wayne William Heine

Edmonton Lake Properties

RE/MAX Real Estate
10805 120 Street, Edmonton, Alberta, T5H-3P9

Tel: 780.991.5107
Email: Click Here

The data included on this website is deemed to be reliable, but is not guaranteed to be accurate by the REALTORS® Association of Edmonton. The trademarks REALTOR®, REALTORS® and the REALTOR® logo are controlled by The Canadian Real Estate Association (CREA) and identify real estate professionals who are members of CREA. Used under license.