Signs Your Well Pump Is Failing (And What to Do About It)
A well pump rarely fails without warning. The signs are often subtle at first — a brief pressure drop, a faucet that sputters air, a water bill that stays flat while your electric bill climbs. Most homeowners miss them until the pump stops entirely.
Recognizing early warning signs gives you time to schedule a replacement on your terms, not under emergency conditions at 2 AM when no water is coming out of the tap.
The Most Common Warning Signs
1. Sputtering or Air in the Faucets
If air is coming out of your taps along with water — especially after any period of low use — that is often a sign the pump is not maintaining consistent priming or water is getting into the air chamber. This is one of the earliest indicators of pump wear.
2. Sudden Drop in Water Pressure
Normal household pressure runs 40–60 PSI. If you notice pressure that is consistently lower than usual — showers that feel weak, toilets that fill slowly — and the pressure switch and tank check out, the pump may not be moving enough water.
3. Pressure That Cycles Rapidly
Short-cycling — where the pump kicks on and off every few seconds instead of running for a normal cycle — usually points to a waterlogged pressure tank. But if the tank has been replaced or checked and the cycling continues, the pump itself may be struggling to maintain pressure.
4. Muddy or Discolored Water
Sand, silt, or discolored water coming from your taps after years of clean water is a warning sign. As submersible pumps wear, the internal impellers can degrade, pulling sediment that was previously filtered or settled. It can also indicate the pump is drawing the well down too low.
5. High Electricity Bills Without Explanation
A failing pump motor works harder to move the same volume of water. If your electric bill has crept up and you have not added any major appliances, your pump may be running inefficiently. A well pump that once drew 8 amps and now draws 12 is consuming 50% more electricity.
6. Pump Runs Constantly
Your pump should cycle — on when pressure drops, off when pressure is restored. A pump that runs continuously without building pressure typically means it cannot keep up with demand, has lost prime, or the impeller is worn. Left running, it will burn out.
7. Visible Rust or Corrosion at the Wellhead
Rust around the wellhead casing, wiring connections, or the pitless adapter is not just cosmetic. Corrosion can migrate down into the pump and motor, and corroded electrical connections cause intermittent failures that are often misdiagnosed as pump problems.
What to Do If You Notice These Signs
Test your pressure tank first. Many pump symptoms are actually pressure tank problems, which are cheaper to fix. Check the air charge — it should be 2 PSI below the pump's cut-in pressure.
Check the pressure switch. A dirty or stuck pressure switch can cause short-cycling and pressure problems. Inspect the contacts for corrosion.
Call a licensed well contractor for a pump test. A contractor can pull amperage readings at the pump and compare against the pump's specifications to determine how much wear has occurred.
Do not wait for total failure. If a contractor tells you the pump is showing wear, budget and schedule replacement. Pumps typically fail within months to a year of showing these signs.
What a Pump Test Costs
A diagnostic service call to test your well pump runs $125–$250 in most markets in 2026. This is money well spent — it tells you whether you have weeks or months before failure, and gives you time to get multiple quotes on replacement.
If Your Pump Has Already Failed
No water from the tap means it is time to call immediately. A licensed well contractor can typically reach you within a day in most service areas. If you have a well warranty plan, call the warranty service line first — they will coordinate the contractor and the claim.