What’s the Average Yield for a Drilled Well?

Well Yield Factors

The yield of a drilled well is influenced by several factors, including the geology of the area, the depth of the well, and the type of aquifer being tapped. In general, wells drilled in areas with high water tables or permeable rock formations tend to have higher yields. For example, a well drilled in a sandstone aquifer may produce 5-10 gpm, while a well drilled in a limestone aquifer may produce 1-2 gpm.

Well Depth and Cost

The depth of a well is a critical factor in determining its yield and overall cost. Drilling a well to a depth of 100 feet can be relatively inexpensive, with costs ranging from $3,000 to $6,000. However, drilling a well to a depth of 500 feet can cost $20,000 to $50,000 or more. It’s essential to consult with a professional well driller to determine the optimal depth and location for a well on your off-grid property.

Pump Selection and Efficiency

Once a well has been drilled and completed, the next step is to select a suitable pump to meet the needs of the household. A submersible pump is often the best choice for a drilled well, as it can handle high volumes of water and is relatively energy-efficient. A 1-horsepower (hp) submersible pump can produce up to 10 gpm, while a 2-hp pump can produce up to 20 gpm. When selecting a pump, it’s essential to consider factors such as flow rate, head pressure, and power consumption to ensure optimal performance and efficiency.