What Does a Tank Do?
Think of your well tank as your water pump's best friend.
If you have a house with a well, then you have a water pump—either in the basement or in the well itself. If the water pump had to switch on every time you turned on a faucet or took a shower, then it wouldn't take long for the pump to burn out. And that could get very expensive.
So, you have a well tank.
The well tank stores water under pressure so that the water pump doesn't have to start up every time you need water. It protects the life of your pump and saves energy because it reduces the amount of time the pump has to run. And it provides more consistent pressure in between pump starts.