Borehole Pump Selection and Installation with Nakiso Borehole Drilling.

Pump selection for your new or existing Borehole depends on several criteria. 

Volume and pressure required, depth and yield of Borehole, application, power available, efficiency and importantly, reliability.


The most important aspect of any Borehole and pump is that they are matched to suit. There is no point in installing a 2HP pump in a Borehole that is suited for a 1HP. Indeed it will be detrimental to both the Borehole and the pump if this is done. It is always best to install a pump of slightly less capacity than the yield of the Borehole.

A 30LPM (Litres Per Minute) Borehole should have a 20 or 25LPM (Litres Per Minute) pump, no more.

Volume and pressure required will obviously vary depending on the application, whether the water is going into storage such as a tank or dam, or whether the water will be used directly from the Borehole. 

If the water is to be used directly from the Borehole then will the water be used via sprinklers, drippers, open hose or other uses?
Borehole Pump Selection and Installation with Nakiso Borehole Drilling.
Borehole Pump Selection and Installation with Nakiso Borehole Drilling.
First having a good idea as to the way you would like to use the water will aid in choosing the pressure and volume required from your pump.

The depth and yield of the borehole will dictate, to a certain degree, especially if it is a low yielding Borehole, the size and type of pump that will best suit the borehole. Yields from low yielding boreholes can be maximized with borehole level controls fitted to the pump. These controls allow the pump to run until the water level is within a few metres of the pump and will then shut off the pump, reinstating the pumping when the borehole has recharged to a safe level. Not only does this protect the pump from running dry, but it also allows the pump to cycle its pumping to attain maximum yield from the borehole.

The application of water use will affect the pressure rating required and the control system of the pump. 
Borehole Pump Selection and Installation with Nakiso Borehole Drilling.
Borehole Pump Selection and Installation with Nakiso Borehole Drilling.
A simple pressure control module will suffice for most applications as it will make the pump “start on-demand”, that is, the pump will start automatically when a tap is turned on and stop when a tap is turned off. If the application will be for tank filling then the process can quite simply be automated to turn the pump on when the water level of the tank starts to fall and when the tank is full, then the pump will turn off automatically.
Borehole Pump Selection and Installation with Nakiso Borehole Drilling.
Borehole Pump Selection and Installation with Nakiso Borehole Drilling.
Power available is important as a poor power supply in some rural areas can cause headaches, especially with power surges. Most domestic systems run on single-phase household supplies, with larger commercial or irrigation systems requiring three-phase power, either mains or generator, to utilize high yields of water, 250LPM (litres per minute) or more.
About Nakiso Borehole Drilling

At Nakiso Borehole Drilling, we are your comprehensive partner for unlocking reliable water on your property. Our highly skilled team tackles all drilling projects, from standard boreholes to specialized Blast Hole and RC Drilling.

We handle everything in-house for a seamless experience, encompassing expert borehole siting, efficient drilling, and pump installation – solar, electric, or manual – tailored to your specific needs. With Nakiso, your reliable water source is just a drill away.

We don't just strive to be the best; we maintain the industry's strictest quality standards and are committed to sustainable practices for the future of Zimbabwe's water security.

Fact 1: Know Your Borehole Casings

The Preferred Borehole Casing In Zimbabwe Is Class 9 and 10 (Pressure Classes.)

This is because Class 9 and Class 10 Casings are more collapse resistant. The strength of a Casing is often described as collapse resistance.

Fact 2: Borehole Drilling Depth

The exact depth, of where the water is located, cannot be established by the drilling contractor nor the Water Surveyor (Borehole Siter).

Fact 3: There Is No 100% Guarantee

It is important to note that it is never a 100% guarantee that any hole will yield water, the amount and water quality can also not be guaranteed by the drilling contractor and water surveyor.

Fact 4: Siting Is Important
Fact 5: Know The Risks

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