Quick Answer
A hand-dug well with a hand pump or a submersible pump is the best type for limited water supply areas, offering a relatively low upfront cost, reduced environmental impact, and reliable access to groundwater.
Choosing the Right Well Type
For off-grid properties with limited water supply, a hand-dug well is often the most suitable option. This type of well is relatively inexpensive, with a cost ranging from $3,000 to $10,000, depending on the depth and location. In contrast, a drilled well can cost anywhere from $10,000 to $30,000 or more.
Well Depth and Yield
A hand-dug well typically ranges in depth from 10 to 30 feet, with an average yield of 1 to 5 gallons per minute (gpm). To determine the optimal well depth, consider the water table depth, which can be assessed through a local well log or by consulting with a geologist. For example, if the water table is at a depth of 20 feet, a hand-dug well with a depth of 25 feet may be more suitable than a shallower well.
Pump Selection
When selecting a pump for a hand-dug well, consider factors such as water pressure, pump flow rate, and power source. A hand pump or a submersible pump are ideal options for hand-dug wells, as they are relatively low-maintenance and energy-efficient. For example, a submersible pump with a flow rate of 2 gpm can be powered by a small solar panel or a wind turbine, making it an excellent choice for off-grid properties.
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