Well pumps rarely fail without warning. Most give off signals for weeks or months before they quit completely — the trick is knowing which symptoms point to the pump itself versus the pressure tank or switch.
Air coming out with the water, especially at the start of a faucet run, often means the pump is losing prime or the pressure tank has lost its air charge and is drawing air into the line. On a submersible system, this can also point to a well running low relative to the pump's setting.
Pressure that surges and drops rather than staying steady suggests the pump isn't maintaining consistent output — sometimes a worn impeller, sometimes a pressure switch that's lost calibration.
A pump that never seems to shut off is either failing to build enough pressure to satisfy the pressure switch's cut-out setting, or there's a leak somewhere in the system keeping demand artificially high. Either way, a pump running nonstop is a pump wearing out fast.
Rapid on/off cycling — every few seconds rather than minutes apart — is more often a sign of a waterlogged pressure tank than a bad pump, but it still damages the pump if left unaddressed, since motor wear concentrates at startup. See our post on pressure tank short-cycling for the full breakdown.
Grinding, high-pitched whining, or a sudden change in the pump's normal running sound often signals bearing wear or impeller damage.
A pump pulling in fine sand or grit is either sitting too low in a well with a dropping water table, or has a worn impeller no longer sealing properly against debris.
A pump working harder than it should — from wear, from short-cycling, or from fighting a failing check valve — draws more power to do the same job. An unexplained jump in the electric bill is worth investigating alongside any other symptoms.
Seeing more than one of these at once? That's a stronger signal something needs attention soon rather than a coincidence. Call us and describe what you're noticing — we can often narrow down the likely cause before we even schedule a visit.