Get NGWA Water Well Drilling Agreement

Key Takeaways: For drinking water, a well should be dug to a depth of at least 100′ feet below the ground surface or 10′ feet below the water table. Deeper wells can range from 300′ – 600′ feet or more depending on the soil type and local regulations.

2.2 Casing All wells should be cased to a depth of at least 25 feet below ground surface. The casings of wells developed in sand or gravel should extend watertight to or into the aquifer. The minimum casing diameter for every new well should be at least 5 inches nominal inside diameter.

The well casing must be a minimum of 12 inches above the concrete floor level. The casing height of a well is measured from the uppermost edge of the well casing excluding the well cap.

Water quality in a deep well usually changes more slowly than in a shallow well. That's because groundwater does some mixing as it moves through the aquifer. A spill a mile away from your deep well in the Basin and Range aquifer might be substantially diluted with clean aquifer water before it gets to your well.

The key to ensuring that a water borehole will work through drought conditions is drill depth. A lot of drilling companies have a policy to stop drilling once they hit water. This can be only 20-30 metres down, which is at a depth that is still susceptible to being affected by the surface conditions.

to drill. A well takes about a week to and lasts up to 40 years with proper maintenance and care. ✓ A well provides free water for both residential and irrigation needs.

Dug wells have a large diameter, are shallow (approximately 10 to 30 feet deep) and are not cased continuously. Driven wells are constructed by driving pipe into the ground. Driven wells are cased continuously and shallow (approximately 30 to 50 feet deep).

Most household water wells range from 100 to 800 feet deep, but a few are over 1,000 feet deep. Well yields can be increased by fracturing the bedrock immediately around the drill hole and intercepted rock faults.