Many homes around O'Fallon rely on a private well, and most well systems need electricity to deliver water. The pump pushes water up from the ground, and the pressure tank holds a small reserve. When the power goes out, the reserve drains, and the taps stop. Treatment equipment such as softeners, filters, and UV lamps may also stop working until power returns. A little planning makes an outage easier to manage.

Know Where Your Equipment Is

Before you need it, find these parts of your system and make sure everyone in the house knows where they are:

  • The electrical breaker that feeds the well pump
  • The pressure tank, usually near the pump or where the water line enters the house
  • The main water shutoff valve
  • Any treatment units, including softeners, sediment filters, and UV lamps
  • The control panel or indicator light for each unit

Write the locations on a card and keep it near your electrical panel. If a service person ever needs to come out, the card saves time.

Plan for Drinking and Cooking Water

An outage does not always mean the water is unsafe, but it does mean you cannot assume the supply is steady. Keep a supply of drinking water in clean, sealed containers. Use a container that was made for storing drinking water, and do not reuse containers that held chemicals or other products. Keep enough on hand for the length of a typical outage in your area, and refill the supply whenever you can.

If your home has a generator, check with the installer or service provider who set it up about how it connects to the well pump. A portable generator run directly into a house circuit can cause injury and damage equipment. Ask for a safe connection method before the next storm season.

What to Check When Power Returns

When electricity comes back, do not rush to use the water right away. Follow these steps:

  1. Wait until the pump has restarted and the pressure tank has refilled. Listen for the pump to cycle normally.
  2. Open an outside spigot or a basement tap and let the water run for a while to clear air and loose sediment from the lines.
  3. Look at the water in a clear glass. Note any cloudiness, discoloration, odor, or grit.
  4. Check that your softener, filter, and UV lamp indicators show normal operation. Reset any unit that displays a fault, and follow the manufacturer instructions for that unit.
  5. Run the taps through each fixture in the house so that the system flushes evenly.

If the water looks or smells different, or if the pressure was low for a long time during the outage, consider a water test before using it for drinking or cooking. Test kits for common concerns are available, and the Missouri State Public Health Lab offers low-cost testing for coliform bacteria, E. coli, and iron bacteria. Ask the lab which test fits your situation, and keep a record of the date and the outage.

Make the Plan Before the Next Outage

An outage is a good time to notice weak points. Ask yourself a few questions:

  • Does my pressure tank still hold air and deliver steady pressure?
  • Do I know how to shut off power to the pump safely?
  • Do I have drinking water stored, and is the container clean and sealed?
  • Is my treatment equipment set to restart on its own, or do I need to reset it by hand?
  • Have I written down a contact for the person who services my well?

Taking these steps now means fewer surprises in the next storm. For O'Fallon homeowners, a simple written plan, a stocked supply of drinking water, and a clear sense of how your well and treatment equipment respond to a power loss will help you decide what to do next when the lights go out.