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Certainly one of the most important factors concerning one's borehole is now on hands. How much water can I pump over the long term without drastically affecting the yield and making sure that the borehole is not pumped dry? Here we use the Step Drawdown Yield Test.
The STEP DRAWDOWN YIELD TEST is underwritten by the Department of Water in conjunction with the National Ground Water Data Base. We test the water for a minimum of 6 hours up to 3 days, depending on when we get the influx of water into your borehole to a constant reading. The constant influx of water must be consecutive readings for 4 hours. When this reading is reached we can now provide you with how much water your borehole is delivering per hour.
Test pumping of borehole is normally carried out to meet two objectives:
- To establish borehole potential.
- To establish aquifer potential.
The pump supplier can only work on the information that the owner of the borehole provides and can thus not be held responsible for the pump or borehole failure if the borehole is over pumped. Either of these incidents might lead to a possible over-capitalization on the borehole equipment with a variety of pump protection devices, as well as additional costs for refurbishing and re-installation of a damaged pump.
Another test that is done on a borehole is the WATER FIT FOR HUMAN CONSUMPTION or WATER ANALYSIS TEST where we take samples on the water in your borehole to have the microbiological count tested as set out by the SOUTH AFRICAN DRINKING WATER STANDARDS (SABS 241: 2005: ABBREVIATED). First sample is on start up and the second sample is after the borehole has been pumping for about a hour.
On both tests we send you a watermarked certificate as per the Borehole Water Assosiation of South Africa which you can keep for future reference.
Contact us for a no obligation free quotation or for more information
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