turnkey off grid borehole water solutions
“Drilling to Drinking”
we offer a turnkey solution and the following individual services below
Drilling | Testing | Pump Installation | Repairs and Maintenance | Turnkey Solution | Warranty
complete borehole installation process
We help undertake all the steps from DRILLING-to-DRINKING inhouse
SITING OF THE BOREHOLE
We do not undertake the siting of the borehole. Depending on the size and layout of the property we can recommend a geophysical survey or a water diviner.
With the exception of collapsing ground conditions the most common drilling method is Air Flush Rotary Percussion. Most boreholes require steel casing through the overburden and some also require a second set of casings, usually PVC.
Determining the yield of the borehole
A pump is installed into the borehole and the water level is recorded in the borehole as water is pumped out. Similarly, the recovery of the water level in the borehole after the pump is switched off is recorded. These results allow one to determine the sustainable yield of the borehole and to select the optimum pump. The duration of the test depends on the volume of water required. For a suburban home a three-hour pump out test is typically sufficient. A sample is drawn for chemical analysis towards the end of the pump out test.
The results of the chemical analyses will determine what type of water treatment and filtration is required, if any. The water is pumped from the borehole through the treatment and filtration into a holding tank. A level switch in the tank controls the filling up of the tank automatically. A pressure pump delivers the treated water from the tank into the home/facility.
YIELD TESTING
The yield test is completed in order to establish the sustainable yield of the borehole in litres per hour. This allows for us to correctly size the pumping equipment required.
How is this done? – We record the Static Water Level – that is the natural groundwater level in the borehole. We then install a test pump to allow for controlled pumping of the borehole. During pumping, two items are monitored and recorded – the drawdown (lowering of water table in the borehole) and the discharge (or pump yield). This information allows us to quantify how much water can be extracted L/hr from this borehole. On completion of the test (which can range from 3 hours to 72 hours) the pump is shut off and the water level in the borehole is recorded as it recovers (called the “recovery”). This recovery information and other data is used to make predictions on the sustainability of the aquifer from which the borehole is drawing the water.
With the yield test results we will be able to assist you with planning the pumping system for your borehole.
WATER QUALITY TESTING
During the yield testing two samples are collected for chemical analyses. One sample is for microbiological analyses (Sterile bottle) and the other for macro elements (anions & cations). The typical test undertaken is known as the SANS-241 drinking water test. The results of these tests will allow for the appropriate treatment / filtration options to be recommended to make your water safe to drink and safe for your pipes.
Domestic Boreholes uses accredited laboratories and will provide you with a report explaining the results of the chemical analysis including suggestions on how to filter your water to resolve any problems with the quality.
Using the information gained by the yield test and chemical analyses of your groundwater we recommend a pumping and treatment system to best suit your needs. Using your preferences for equipment and location, power availability and our many years of experience in the industry we design the layout of the pumping system.
A typical system is as follows – the borehole submersible pump is installed in the borehole, this pumps water into a holding tank which has level switches (they tell the submersible pump to fill up the tank when its half full and switch off when the tank is full). The water is then pumped from the tank into the home reticulation system using a variable speed pressure pump.
Some of the treatment may be done before the water enters the tank and some after – all depending on requirements. We only use pumps from established manufacturers including DAB, Grundfos and Franklin. Our technicians are able to advise and complete repairs, services and replacements to ensure your system is working efficiently.
HOW DOES WATER GET FROM MY BOREHOLE TO MY TAP?
A correctly sized submersible pump is installed into the borehole and pumps the water from the borehole through any treatment and filtration into a holding tank/s. The treated water is then pumped, with a pressure pump from the tank into the house/facility. A level switch in the tank activates the submersible borehole pump when the tank is ¾’s full to top the tank up, thereby maintaining adequate reserve.
WE OFFER THE FOLLOWING SERVICES:
a) Maintaining your borehole
b) Keeping your water supply flowing all year
c) Top tips for maintaining your borehole
d) Borehole annual check-up
12 MONTHS WARRRANTY ON DEFECTIVE WORKMANSHIP & TYPICALLY, 24 MONTHS ON PUMPS (as per OEM)
complete borehole installation process
We help undertake all the steps from DRILLING-to-DRINKING inhouse
SITING OF THE BOREHOLE
We do not undertake the siting of the borehole. Depending on the size and layout of the property we can recommend a geophysical survey or a water diviner.
With the exception of collapsing ground conditions the most common drilling method is Air Flush Rotary Percussion. Most boreholes require steel casing through the overburden and some also require a second set of casings, usually PVC.
Determining the yield of the borehole
A pump is installed into the borehole and the water level is recorded in the borehole as water is pumped out. Similarly, the recovery of the water level in the borehole after the pump is switched off is recorded. These results allow one to determine the sustainable yield of the borehole and to select the optimum pump. The duration of the test depends on the volume of water required. For a suburban home a three-hour pump out test is typically sufficient. A sample is drawn for chemical analysis towards the end of the pump out test.
The results of the chemical analyses will determine what type of water treatment and filtration is required, if any. The water is pumped from the borehole through the treatment and filtration into a holding tank. A level switch in the tank controls the filling up of the tank automatically. A pressure pump delivers the treated water from the tank into the home/facility.
YIELD TESTING
The yield test is completed in order to establish the sustainable yield of the borehole in litres per hour. This allows for us to correctly size the pumping equipment required.
How is this done? – We record the Static Water Level – that is the natural groundwater level in the borehole. We then install a test pump to allow for controlled pumping of the borehole. During pumping, two items are monitored and recorded – the drawdown (lowering of water table in the borehole) and the discharge (or pump yield). This information allows us to quantify how much water can be extracted L/hr from this borehole. On completion of the test (which can range from 3 hours to 72 hours) the pump is shut off and the water level in the borehole is recorded as it recovers (called the “recovery”). This recovery information and other data is used to make predictions on the sustainability of the aquifer from which the borehole is drawing the water.
With the yield test results we will be able to assist you with planning the pumping system for your borehole.
WATER QUALITY TESTING
During the yield testing two samples are collected for chemical analyses. One sample is for microbiological analyses (Sterile bottle) and the other for macro elements (anions & cations). The typical test undertaken is known as the SANS-241 drinking water test. The results of these tests will allow for the appropriate treatment / filtration options to be recommended to make your water safe to drink and safe for your pipes.
Domestic Boreholes uses accredited laboratories and will provide you with a report explaining the results of the chemical analysis including suggestions on how to filter your water to resolve any problems with the quality.
Using the information gained by the yield test and chemical analyses of your groundwater we recommend a pumping and treatment system to best suit your needs. Using your preferences for equipment and location, power availability and our many years of experience in the industry we design the layout of the pumping system.
A typical system is as follows – the borehole submersible pump is installed in the borehole, this pumps water into a holding tank which has level switches (they tell the submersible pump to fill up the tank when its half full and switch off when the tank is full). The water is then pumped from the tank into the home reticulation system using a variable speed pressure pump.
Some of the treatment may be done before the water enters the tank and some after – all depending on requirements. We only use pumps from established manufacturers including DAB, Grundfos and Franklin. Our technicians are able to advise and complete repairs, services and replacements to ensure your system is working efficiently.
HOW DOES WATER GET FROM MY BOREHOLE TO MY TAP?
A correctly sized submersible pump is installed into the borehole and pumps the water from the borehole through any treatment and filtration into a holding tank/s. The treated water is then pumped, with a pressure pump from the tank into the house/facility. A level switch in the tank activates the submersible borehole pump when the tank is ¾’s full to top the tank up, thereby maintaining adequate reserve.
WE OFFER THE FOLLOWING SERVICES:
a) Maintaining your borehole
b) Keeping your water supply flowing all year
c) Top tips for maintaining your borehole
d) Borehole annual check-up
12 MONTHS WARRRANTY ON DEFECTIVE WORKMANSHIP & TYPICALLY, 24 MONTHS ON PUMPS (as per OEM)
