Drilling a borehole is one of the most important investments for homes, farms, and businesses in Zimbabwe. It promises independence from unreliable municipal water supply and ensures access to clean water. However, one of the most frustrating challenges borehole owners face is unreliable water yield.
What is Borehole Yield?
Borehole yield refers to the amount of water that can be sustainably drawn from a borehole over time. A high-yield borehole provides enough water to meet household or agricultural needs, while a low-yield borehole struggles to keep up, forcing owners to ration water or seek alternatives.
Why Do Some Boreholes Have Low or Unreliable Yields?
- Poor Geological Surveying – Without proper hydrogeological studies, drilling is often guesswork. Some drillers dig blindly, which increases the risk of striking a weak aquifer.
- Seasonal Variations – Groundwater levels fluctuate, especially during droughts, reducing output in certain regions.
- Over-pumping – Drawing water too quickly can reduce pressure in the aquifer, lowering yield.
- Poor Drilling Practices – Inadequate casing, wrong depth, or poor finishing can affect water flow.
The Impact on Borehole Owners
For homeowners, a borehole with unreliable yield means:
- Constant frustration with trickling taps.
- High costs in pumping with little return.
- Dependency on water deliveries during shortages.
- Reduced property value, since water security is a key selling point.
How to Avoid This Problem
- Work with professional drillers who conduct geological surveys before drilling.
- Drill to the correct depth based on the area’s water table.
- Invest in yield testing to confirm sustainable water flow.
- Choose a reputable company with a proven track record, like Ragnarock Drilling, which ensures scientific surveys and reliable drilling practices.
Conclusion
While borehole drilling is a smart investment, ignoring geological assessments can lead to disappointment. Protect your investment by choosing experts who guarantee not just a borehole, but a reliable and sustainable water source.
