Wells – Background Information
Well Water – Background Information
Many houses now use private wells as a source of drinking water. There are generally 3 types of private drinking wells used today:
Dug – These wells are made by digging a hole in the ground and then casing the hole with a strong material to prevent collapse, such as stone, brick or tile. Dug wells are not very deep, usually ranging from 10 to 30 feet, this short depth means these types of wells are most at risk from contamination. There are a number of features your dug well should have to minimise the chances of contamination:
- The well should be cased with a strong, watertight material.
- The opening of the well should be covered by a concrete lid that is positioned about a foot off the ground.
- Build a mound around the opening of the well so that surface water runs away from the well.
- Try and have your water pump leading to a separate building rather than right next to the well.
Driven – These types of wells are usually deeper than dug wells, ranging from 30 to 50 feet in depth. This is still reasonably shallow and therefore a driven well has quite a high risk of contamination. There are a number of features your driven well should have to ensure proper construction and minimise the chances of contamination:
- 2 to 3 inch diameter metal pipes should be driven into the ground, with a screen at the end of the pipe. This helps to drive the pipe through sand and gravel so that the water that enters the well is filtered from particulate contaminants.
- Put the pump on top of the well or in a separate building.M
- The well and pit should be capped with the same kind of tile used for dug wells.
- Follow the same instructions as given for dug wells.