What is a sign of possible well system failure?

A sudden decrease in water supply is indeed a significant indicator of possible well system failure. This could be attributed to various factors, such as a drop in the water table, a malfunction of the pump, or changes in the aquifer environment. A reduction in water supply often reflects serious underlying issues, such as over-extraction, contamination, or mechanical problems that could necessitate immediate professional assessment to prevent further complications.

In contrast, increased water quality typically suggests that the well system is functioning well or improving, making it less likely to indicate failure. Expansion of the borehole might point toward issues such as geological instability but isn't a direct sign of a well's failure. Consistent water pressure is generally a sign that the system is operating correctly, indicating that the components are functioning as designed. Therefore, the sudden decrease in water supply stands out as the primary sign of potential failure in a well system.