After a flood, the owners of household wells should take certain precautions to
make sure their water is safe and their well is in good operating condition.
An obvious concern is that flood water loaded with bacteria, chemicals or other pollutants may have gotten into the well. A less obvious concern is electrical shock if a non-submersible pump or any part of the well electrical system is flooded.
At the heart of each water well system is a pump, and the most common types are jet pumps and submersible pumps.
If your area you live in does not have a high water table, or if it lacks a stable supply of potable water near the surface, you must dig deeper and a deep well means that the water has to be lifted farther by water well pumps.
The most common issues with ground water may be hardness. Tips from NUCO Pump and Well Services
Hard water has not been shown to cause health problems, but can be a nuisance as it may cause soap curds and deposits to form on pipes and other plumbing fixtures. Over time this can reduce the diameter of the pipes.