Sunday, June 01, 2008

Anatomy of the Well

Usually ground water is found in the underground formations called aquifers. The soil and rock that lie between the ground surface and the aquifer act as a barrier against any possible contamination to the aquifer.

The well that was installed at our cabin is 225 feet deep. The well was drilled thru both soil and many feet of rock into an underground stream of water. After the drilling was complete, a submersible pump and motor were installed into the underground stream inside a casing that keeps debris from entering into the piping. Connected to the submersible pump and motor is a drop pipe that extends up to the pitless unit at ground level.

The submersible pump and motor are powered by electrical wire that runs down and parallel to the drop pipe from the pitless unit at ground level. The electrical wire is connected to an electrical control box and the water flow is controlled by an automatic pressure switch.

The water is pumped into the cabin from the drop pipe into a discharge pipe placed below the frost lines. The discharge pipe is connected to the pressure water storage tank and is controlled by an automatic electrical pressure switch. The water in the pressure tank supplies the cabin plumbing fixtures, such as the shower, toilet, sinks and hot water heater. (See sketch for the anatomy of a well).

This type of well is powered by electrical power supplied to the cabin. The water supply is contingent on a continuous flow of electrical power. At times the electrical power is down or interrupted for short periods of time; therefore the water supply is off.

It is still possible to obtain water from this type of well. A PVC pipe shaped well bucket (4 1/2" diameter for 6" pipe) can be sent down the drop pipe into the aquifer or underground stream and pulled up to the surface with a rope attached to the bucket. In the case of our 225 foot deep well, this method is impractical. Therefore, some bottled water for drinking is a must. Of course, the electric power is usually down for only short periods of time and is not a major inconvenience.

1 comment:

Shellmo said...

Happy to find another log cabin dweller!

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