Boreholes rarely fail suddenly. Yield tapers, the pump cycles harder, and one day it burns out. Watching a few simple indicators catches problems early.
Record static and dynamic water levels quarterly. A steadily deepening dynamic level means the screen is clogging or the aquifer is under stress.
Test water quality annually. Rising iron or manganese often signals biofouling that responds well to early chemical re-development.
Keep the headworks sealed and the sanitary seal intact, protect cabling from rodents, and service the pump control panel on the manufacturer's schedule.