If you are looking to drill a borehole for extracting water, you will surely want to know how long your investment will last. You’ll also be wanting to hear that the lifespan of a borehole is a long time. Well, there’s good news! Boreholes can last for decades, even a lifetime, with the right maintenance. There are still boreholes in use that were created a hundred years ago, when drilling techniques were not as advanced as they are today. Using the most up-to-date technology and methods, boreholes are not likely to collapse any time soon.
Boreholes these days are lined with plastic membranes from top to bottom, which allows water to flow freely and reduces the risk of the borehole collapsing in on itself. As there isn’t much chance of these linings becoming damaged, it wouldn’t be unreasonable to assume that, in modern times, the lifespan of a borehole could be much, much longer.
Of course, it isn’t necessarily enough for the borehole to be stable to ensure that it is useable and that potable water is always going to be available. You will need to perform regular semi-maintenance to get the best use out of your borehole.
How to maintain a borehole
There are many parts of a borehole that require maintenance. The head of the borehole should be a galvanised metal to avoid corrosion, but if you already have one in place and it is not galvanised, it should be coated in an oil or spray to help reduce the risk. Alternatively, you may have a plastic head, in which case it should be cleaned every now and again to stop bacteria building up, which could make its way into your borehole. It is also worth checking under the man hole cover whenever you can, just to make sure nothing has got inside, such as mud or insects.
The borehole water pump and filters can sometimes get blocked up with small bits of bacteria, which can lead to water quality and flow speed decreasing. Iron deposits in the water can cling to components and block up the system over time. Due to this, it is important to lift the pump up for cleaning every now and again. If it gets particularly bad it may require a chemical clean or even a replacement to ensure borehole efficiency.
A regular water test is a quick way to spot any issues such as the above. High levels of manganese, iron and bacterium are an indicator that your borehole may be getting clogged up.
It is very important to use the right techniques when a borehole is created to ensure the longest lifespan possible. On top of this, maintenance can help prolong the lifespan of a borehole when it comes to being useable for potable water. For more information on how to maintain a borehole, or if you’d like to know more about our services, please get in touch!
Contact Borehole Solutions today on 01733 200 501. We also offer an extensive range of other geotechnical services, including sonic, rotary and cable percussion drilling, as well as soakaway, water well and ground source heat pump installations! Or take a look at our Instagram page to see images of our previous work.