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Residential Water Well System Components

Four generations of experience installing, maintaining and
repairing wells throughout Utah and Wyoming.
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If you own a residential water well system – or are planning to drill one on your property – you should be at least a little familiar with the main components. Having a basic understanding of how the system works can help you troubleshoot problems and may give you an appreciation of proper well maintenance.

Residential Water Well System Components

Ready to learn? Below, we explain the function of six important residential water well system components.


Casing is the steel or plastic tube that provides a path for groundwater flow. Along with grout, this 4- to 6-inch diameter lining keeps the water confined to prevent contamination and sedimentation.

Well Cap

The top of the casing is covered by a cap, which provides a water-tight seal that blocks contaminants, pollutants and insects from entering the water well system. Most caps feature vented screens to allow for pressure equalization during pumping.

Well Screen

The screen acts as a strainer, sitting along the bottom of the casing and filtering out sand, gravel and sediments. For residential water wells, continuous slot, slotted pipe and perforated pipe screens are typically used.

Pressure Tank

The pressure tank stores water for household use, and it can be found inside your home. The level of pressure inside the tank is monitored, and a switch automatically turns the pump on or off as needed.

Well Pump

The pump is the well system component responsible for drawing water up from the ground and moving it into your home. For residential water wells, two type of pumps — above-ground jet pumps and submersible pumps – are commonly used.

Pitless Adapter

A pitless adapter creates a sanitary and frost-proof seal between the casing and the main water line that runs to the home. Adapters are connected to the casing below the frost line for the area, and they function to divert water horizontally to prevent the pump and pipes from freezing during cold weather.

All of these residential water well system components work together, and if one has a problem, your household water supply could be affected. With proper maintenance, however, you shouldn’t have that worry. For advice on how to maintain your water well, talk to the Z-Team at Mike Zimmerman Well Service LLC.

The licensed Z-Team contractors also have the skill, knowledge and expertise to troubleshoot problems and complete quality, affordable repair or replacement of damaged system components.

After more than 30 years of drilling and maintaining wells throughout Utah and Wyoming, the licensed Z-team contractors are known for expert workmanship and stellar customer service. Contact our Salt Lake City office and schedule a free consultation to learn more about your residential water well system components today.