Water well construction requirements protect our subsurface drinking water supplies utilizing sound drilling practices that prevent aquifer contamination from the surface. However, natural disaster events, such as extreme flooding, may compromise even the best constructed water wells. Owners of private water wells should take precautions if the threat of flooding exists, and specific steps should be taken if water wells are impacted by flood waters. It is important to disinfect a water well if the well has been impacted by flood water, a water sample tests positive for bacteria, or when work on the well, such as a pump replacement or liner installation has been completed.
- Reducing the Impact of Flooding – Private Water Wells - PUB2500
- Disinfecting Your Water Well - PUB2733
- Disinfecting Your Water Well – Video
- Flooded Well Guidance – EPA
- Managing a Flooded Well – Water Systems Council
- Disaster Resources
- Wells and Drilling
When Repairs are Needed
If repairs need to be made to the water well, hire a contractor to do the work. Locate contractors licensed to do business in Missouri online using the Well Installation Management System tool.