Which of the following is a sign of maintenance need in a well?

Unusual noises from the pump serve as a clear indication that maintenance may be required in a well system. These noises can suggest a variety of issues, such as mechanical wear, misalignment, or potential failure of components like the motor or bearings. When a pump begins to operate outside of its normal sound range, it could indicate problems that, if left unaddressed, may lead to more serious failures, reduced efficiency, or complete breakdown of the pumping system.

Other signs listed, such as stable water quality results over time, healthy vegetation around the well, and increased flow rate, typically indicate that the well is functioning properly. Stable water quality suggests that there are no significant contaminant issues, healthy vegetation indicates that the well's surrounding environment is sound, and an increased flow rate might simply reflect better water availability or improved pump performance—not necessarily a call for maintenance. Conversely, unusual noises are a reliable signal that thorough inspection and potentially remedial actions are necessary to avoid more extensive damage.