Assuming that the survey yields positive results and that these are confirmed by the drilling, the quality of the work performed and the equipment supplied are vital to the long-term performance of boreholes and pump installations. The latter are of two types, according to whether they are designed to operate submerged or mounted above ground. Of the two, the positive pressure applied by submersible models is more effective than negative pressure applied from above and they also consume less electricity.
When choosing the correct size pump for borehole installations, this must be based upon the total head of pressure to be overcome. This will be determined from the depth of the drilled portion plus the height of any vertical piping that may need to be installed above ground. Any horizontal piping needed to transfer water to a storage tank, however, does not add to the head of pressure and will, therefore, have no influence on the size of the pump required.
Any water treatment required will depend upon the intended use for the pumped water. For tasks such as cleaning cars and driveways, irrigating the garden, and topping up the pool, the underground supply may be adequate without further treatment. If it is required for drinking purposes, however, the company responsible for drilling the borehole and the pump installation should be able to test the water and determine the type of treatment plant that will be necessary.