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Well water pumps
By John Martino
Private wells use a well pump to pull water from an underground well, delivering it through the main well distribution pipe. The well water is stored in a well tank for domestic use. There are two types of well pumps used in residential applications. One is a submersible pump which is the most common type. The second type is a jet pump which is installed close to well water storage tank. Submersible pumps are desirable because they tend to be more reliable for general household use. They also tend to need less maintenance then the Jet well pumps. A submersible pump is a single unit that is submerged at the bottom of the well and has impellers that pull water and deliver it to the surface. These types of well pumps can last a long time, as much as fifteen to twenty years in some instances. Replacing a submersible pump can be quite expensive because heavy specialized equipment is required. Jet style pumps are generally used in shallow well applications. The jet pump is a centrifugal force pump that forces water to the surface. The Jet pump generally has a shorter life expectancy as compared to the submersible pump but is generally less expensive to maintain and replace. Some jet pumps that are installed for deep wells use a system where water is re-circulated downward into the well again to create pressure which help in delivering water to the surface. The well tank is usually installed in the basement of the home. As the well tank fills with water the pressure inside the tank increases. This compressed air that is in the well tank supplied the pressure necessary to supply water to the various fixtures in the home. As water is used the pressure in the tank drops and the pump cycle then continues. A problem called water logging can occur with well tanks. The issue occurs when the water in the tank begins to absorb the air in the tank. As a result there may be a lack of adequate pressure to supply the home. Some more modern well tanks have a bladder system that separates the water from the air. This separation prevents the water from absorbing the air in the tank.
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Thank you for sharing this information, John.
My son's well seems to have low pressure so I'll check it out.
Best to you.
Frederick
Thanks for this information. We have a private well where I live. I believe we have a pump at the bottom of the well.
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