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To minimize water quality and quantity impacts, dug wells should be at least 3 m (10 ft) deep and sited away from surface water sources. Surface water can carry contaminants from the land surface into your well and the aquifer. Check with your local government about setbacks for construction of wells near streams, lakes and wetlands.
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To minimize water quality and quantity impacts, dug wells should be at least 10 feet (3 m) deep and sited away from surface water sources. Surface water can carry contami-nants from the land surface into your well and the aquifer. Provincial regulations require a well to be sited away from possible sources of contamination; at least 20 feet (6 ...
Dug Well Construction Features. The well should be cased with a watertight material (for example, tongue-and-groove precast concrete) and a cement grout or bentonite clay sealant poured along the outside of the casing to the top of the well. The well should be covered by a concrete curb and cap that stands about a foot above the ground.
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3.2 Dug Wells. Dug wells (Figure 7 and Figure 8) have large diameters (typically 600 to 1500 mm) and are usually relatively shallow (3 to 10 m deep), extending only a few meters below the water table. They were historically the most common type of domestic well because they could be constructed by hand without the need for heavy equipment.
Mar 22, 2022 · Older dug wells can be made more sanitary by installing a water-tight casing with a concrete cap, and sealing the area outside the well casing with cement grout or bentonite clay. The casing should extend at least a foot above grade and the land immediately around the well should be sloped to prevent water from collecting by the well pit.
Also look for points where surface runoff can enter the well casing directly. The essence of good construction is ensuring filtration of all water that enters the well. Dug wells are required to be made out of inter-locking concrete tiles (3 or 2 feet in diameter), steel, or plastic (typically 4-6-inches in diameter).
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Dug (or excavated) wells are shallow, typically less than 50 feet (15 m) deep and 3 feet (1 m) wide (see Figure 1). They are relatively inexpensive to construct as they are commonly dug using excavators, backhoes or power shovels. Unfortu-nately, the shallow depth of a dug well makes them vulnerable to contamination and susceptible to lowered ...
