419 N Meldrum St, Fort Collins, CO 80521 (970) 499-0516

How to tell if a well pump is worn out?

Well pumps rarely die without warning. They give you weeks, sometimes months, of small symptoms that are easy to explain away until the day the taps run dry. Knowing what those symptoms look like is the difference between a scheduled replacement and an emergency call on a Sunday night.

Short answer

A worn-out well pump usually announces itself before it quits. Watch for pressure that sags when two fixtures run at once, a pump that kicks on and off every few seconds, or one that runs for long stretches and never seems to shut off. Sputtering, air-spitting faucets and a sudden jump in your electric bill point the same direction. Cloudy or gritty water often means the pump is sitting too low in a drawn-down well. None of these symptoms prove the pump itself is dead, because a failed pressure switch or a waterlogged tank causes the same behavior, so have a licensed technician check amp draw, pressure settings and static water level before anyone pulls the pump.

The Six Symptoms Worth Acting On

  • Pressure drops when two fixtures run. A shower that loses force the moment the washing machine fills means the pump can no longer hold its rated flow.
  • Rapid cycling. If the pump clicks on and off every few seconds, the pressure tank has usually lost its air charge. Left alone, that cycling destroys the motor.
  • The pump never shuts off. A pump running continuously without reaching cut-out pressure has worn impellers, a hole in the drop pipe, or a well that cannot keep up with it.
  • Air spitting from taps. Air in the lines means the pump is breaking suction, drawing from a drawn-down well, or has a leak above the water line.
  • Grit or cloudiness. Sand coming up with the water abrades the impeller stack and shortens whatever life is left.
  • A higher electric bill. A dragging motor pulls more amps for the same gallons. The bill often moves before anything else does.

Any one of these on its own is worth a diagnostic visit. Two or more together usually means the pump is near the end.

When It Is Not the Pump at All

Every symptom above can also be produced by a part that costs a fraction of a pump replacement. A waterlogged pressure tank causes rapid cycling. A failed pressure switch causes a pump that will not start. A stuck check valve causes pressure that bleeds off overnight. A clogged sediment filter causes weak flow at every fixture.

This matters because the labor to pull a submersible pump is the expensive part of the job, and it is wasted if the real fault was a $90 switch. A competent diagnosis measures amp draw against the motor nameplate, checks the tank's air charge against the switch cut-in setting, and confirms static and pumping water levels before anyone brings out a boom truck. If you are troubleshooting right now, start with our step-by-step guide to what to check first when a well pump is not working.

Why Northern Colorado Wears Pumps Out Faster

Larimer County water is hard. Mineral scale builds on impellers and inside the drop pipe, and it costs a pump efficiency every year it runs. Foothills properties around Laporte and Red Feather Lakes often draw from deep bedrock wells, where a pump has to lift water several hundred feet and works harder for every gallon. Summer thunderstorms on the Front Range put surges through overhead service drops that take out control boxes and motor windings outright.

None of that is avoidable, but it is manageable. A correctly sized pressure tank, a surge arrestor at the control box, and a pump set at the right depth for your actual static water level together add years to a system in this climate.

What are the first signs of water pump failure?

The earliest signs are small and easy to write off. Pressure drops a little when someone else turns on a tap. The pump cycles more often than it used to. You hear it start and stop while nobody is using water, which points to a leak in the drop pipe or a failing check valve. Faucets spit air after the house has been quiet overnight. Hot showers turn lukewarm because the flow cannot keep up. Electric bills creep up with no change in habits. Catching the problem here is worth real money, because a pressure switch or check valve replaced early often prevents the burned-out motor that becomes a four-figure replacement job.

The practical takeaway: the cheap window closes fast. A pressure switch, check valve or tank bladder caught in the first weeks of trouble is a same-day repair. The same system left running for three months arrives as a burned-out motor and a full pump replacement.

Related Well Pump Questions

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Get a Straight Answer About Your Well Pump

Our licensed pump technicians test before they quote: amp draw, insulation resistance, tank pre-charge and water level, with the readings written down.

We serve private wells across Fort Collins, Loveland, Wellington, Laporte, Berthoud, Windsor, Greeley, Estes Park and Red Feather Lakes.

Visit our Well Pump Services page to review the full scope of work and request service.

Star Plumbing Co. LLC

419 N Meldrum St,
Fort Collins, CO 80521, United States

Direct Line
(970) 499-0516