Water Supply Well System Failure

All well systems are vulnerable to mechanical failure, and that failure may contribute to water supply contamination. Broken surface seals, corroded pipe, and standing water that is allowed to seep and drain back into the aquifer along the outside of the well casing can introduce contaminants into your system.

Pump or plumbing failure should always be addressed by a licensed well professional.

The most common water supply well system failure in Arizona is due to dropping ground water elevations. If the water table drops below the well casing, flow of water becomes turbulent as the water mixes with air. In an uncased, bedrock well, as the water table drops and air is introduced into formally saturated cracks and fractures; turbulent flow begins to erode the aquifer. The first sign of system failure (and dropping ground water elevations) is the build-up of sediment in tanks, pipes, and plumbing fixtures. If the well continues to pump gritty sands, the pump itself will grind to a stop and will need to be replaced.