Well & Borehole Pumps

Well and borehole pumps are most often found in wells and used to pump water to homes, or offices. Submersible pumps need to be sized according to each individual situation.

Considerations in selecting a well or borehole pump include;

  • Site conditions

  • Well depth

  • Predicted water usage

Our experienced staff, will evaluate your water pump needs and create a borehole pump package that delivers!

At FWS we provide a large variety of submersible pumps ranging from 0.37kW to 22kW. We generally hold large stocks of submersible pumps in 0.37 kW, 0.55 kW, 0.75 kW and 1.1 kW; however, should you require a more substantial unit, it can be ordered and fitted upon request.

Flow rates can vary from 5 litres/min to 500 litres/min and heads up to 600m.

Submersible borehole pump with control box

Well & Borehole Pump Applications

  • Residential potable water supply from deep wells

  • Municipal and industrial waters supply

  • Irrigation and other agricultural applications

  • Fire fighting systems

  • Pressure boosting in high-rise buildings, domestic houses and other applications

They are suitable for all domestic, agricultural and commercial water supplies. Generally some of the top brands we carry and repair are:

  • Lowara

  • Franklin

  • Grundfos

  • Pedrollo

We also offer a comprehensive well and borehole pump repair service. You can count on us to get your well up and running as quickly as possible.

Different sizes of borehole pumps
  • Goulds

  • Pentax

  • Stairs

Pressure systems


As water is pumped from the well into the pressure tank, it compresses the air in the tank until it reaches a preset level, typically the 40 to 60 pounds per square inch (psi). When someone turns on a tap, air pressure in the tank forces water throughout the plumbing until the pressure drops to the preset trigger pressure, usually the 20 to 40 psi. That tells the water pump to turn on, and water is then drawn into the house and tank. When the tap is turned off, pressure builds until it is restored to its default shut-off level. The amount of water delivered by the pressure tank between the time the pump shuts down and the time it starts again is called the drawdown.


Pressure tank size and the drawdown will depend on the amount of water the pump can draw into the home in 1 to 2 minutes. Some tanks hold as little as 10 gallons, others more than 200 gallons. The most common size of pressure tanks in residential homes hold about 44 gallons and have a drawdown of about 16 gallons. If your home uses more than the average amount of water or has a well with a low yield, a larger pressure tank may be needed.

Why do I need a pressure tank?

A pressure tank is important because it keeps water pressure at a constant level. It also keeps the water and air separated. Without these features the water pump would turn on and off quickly – a problem called cycling – which can quickly burn out the pump motor.

If your well has a submersible pump, it can be difficult to tell whether the pump is running or not. These pumps often have a relay switch that will click on and off when it is trying to activate the pump, and you can listen for that click. Some models even have a relay switch light that will tell you when the relay is turning on the pump. There is, of course, the chance that there is a problem with the electrical relay system. This will require a professional to determine if that’s the cause.


If you think there is a problem with your well pump or pressure tank, FWS can help you determine the problem and find a solution.

Vertical pressure vessel
Horizontal pressure vessel

Grants Available for Water Pumps*

Grants Available for Water Pumps*

Grants are available for water pumps for private well supplies and group water schemes from your local authority.

Terms & conditions apply. Contact a member of our team for more information.