Well Pump Not Working: How to Diagnose and Fix It
Why Your Well Pump Stopped Working (Quick Answer)
A well pump stops working for four main reasons: a tripped circuit breaker, a failed pressure switch, a waterlogged pressure tank, or a burned-out pump motor or controller. The first three are DIY-fixable for $25–$275 in parts. If none of those restore water flow, the problem is likely underground and needs a professional well service company. Steps 1 through 3 take about 15–20 minutes total — work through them in order, cheapest fix first. For a broader overview of repair options, see our complete well pump repair guide.
Video: “No Water! #1 Fix it Video why Well Pump not working” by H2O Mechanic
Step 1 — Check the Breaker (10-Second Fix)
The first thing to check when a well pump stops working is the circuit breaker. It costs nothing and takes about 10 seconds.
Find the double-pole breaker in your main panel labeled “Well,” “Pump,” or “Well Pump.” A tripped breaker sits in the middle position — not fully on, not fully off. To reset it properly, push it all the way to OFF first, then firmly back to ON. Pushing it directly to ON without going to OFF first may not complete the reset.
While you’re at it, check the well switch near the pressure tank. It’s a separate switch that homeowners occasionally bump to the OFF position without realizing it.
If the breaker trips again within minutes of resetting, stop. A repeatedly tripping breaker means the pump motor is drawing too much current — a sign of a failing motor or a seized impeller. Call a well service company rather than continuing to reset it.
Step 2 — Test the Pressure Switch ($25 Fix)
If the breaker isn’t tripped, the pressure switch is the next thing to check. This is the most common non-electrical cause of a well pump not working, and it’s the scenario most competitor guides skip over entirely.
The pressure switch mounts on a quarter-inch tube near the pressure tank. It monitors water pressure and signals the pump to start when pressure drops below the cut-in threshold — typically 30 PSI on a standard 30/50 residential system.
Safety: Turn off the breaker before opening the pressure switch cover. The switch carries line voltage.
To test the switch, turn the breaker back on, then strike the tube below the switch sharply with a screwdriver handle. A visible spark and pump activation confirm the contacts are pitted or burned and the switch needs replacement.
Signs the switch is bad without the spark test: the pump won’t start even when pressure should be low, or there’s no audible clicking from the switch when it should be triggering.
To replace the pressure switch:
- Turn off the breaker and confirm power is off with a voltage tester
- Label each wire terminal with tape before disconnecting anything
- Unscrew the old switch from the tube
- Wrap the threads with Teflon tape
- Install the replacement in the same orientation as the original
- Reconnect the labeled wires
A replacement switch costs about $25 at any hardware store. We found that most pressure switch failures show up as a no-start condition rather than intermittent operation — the contacts corrode through and the switch stops conducting entirely. For more on diagnosing switch failure patterns, see our guide to pressure switch problems.
Temporary fix if you can’t get to a store today: File the pitted contact surfaces smooth with a nail file. This restores temporary conductivity but the switch still needs permanent replacement as soon as possible.
For additional context on the diagnostic process, Family Handyman’s well pump guide{:target=“_blank”} covers the same basic sequence.
Step 3 — Replace the Pump Controller ($75 Fix)
If replacing the pressure switch didn’t restore water flow, the pump controller is the next component to check. This step applies primarily to submersible pump setups — jet pumps typically don’t have a separate controller.
The controller is an electronic box that starts the submersible pump motor when the pressure switch signals it. Look for a metal or plastic box mounted near the pressure tank, often labeled “motor control.”
To replace the controller:
- Remove the cover screw and take the unit to a hardware store for an exact-match replacement — bring the brand name and any model numbers from the label
- Snap the new controller onto the existing mounting box (same-brand units require no rewiring)
- Restore power and test
A replacement controller runs about $75.
Step 4 — Diagnose a Waterlogged Pressure Tank ($200+ Fix)
A waterlogged pressure tank has a specific symptom: water spurts or pulses rhythmically at the faucet even when the pump appears to be running. This is different from getting no water at all.
A pressure tank holds a cushion of air to maintain steady water pressure between pump cycles. When the internal bladder ruptures, the tank fills entirely with water. The pump then short-cycles — switching on and off more than 6 times per hour — because there’s no air buffer. Short cycling wears out the pump motor fast.
Three ways to confirm a waterlogged tank:
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Air valve test: Unscrew the plastic cap on top of the tank, then press the Schrader valve with a screwdriver tip. Water discharge instead of air means the bladder has ruptured.
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Tire gauge test: Check air pressure at the Schrader valve with a standard tire gauge. A healthy tank should read 2 PSI below the cut-in pressure — that’s 28 PSI for a 30/50 switch. A reading of 0 or a spray of water confirms waterlogging.
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Physical test: Rock the tank gently from the top. A healthy tank has an air pocket at the top and moves fairly easily. A waterlogged tank feels uniformly heavy top-to-bottom and barely moves.
A waterlogged pressure tank cannot be repaired — once the bladder ruptures, the only fix is a replacement tank. Tank prices start around $200; budget an additional $150–$350 for a plumber to swap it if you’re not comfortable draining the system yourself and matching the replacement to your household’s drawdown capacity.
If the tank checks out fine and you’re still troubleshooting, our troubleshooting guide covers more advanced diagnostic paths.
When to Call a Well Driller or Plumber
Some well pump problems sit outside what a homeowner can fix with basic tools. Knowing when to stop saves money and avoids making things worse.
Call a professional if:
- The circuit breaker trips again within minutes of resetting — this points to a motor drawing too much current
- The pump runs continuously but no water comes out (read more about what this usually means in our pump runs but no water guide)
- Water comes out discolored, sandy, or smells different — sediment often signals a pump that’s pulling from the bottom of the well or a compromised casing
- The pump hums but doesn’t start — a seized motor is rarely worth DIY repair
- You’ve replaced the pressure switch and controller and still have no water
Underground problems — broken water lines, failed check valves below grade, a damaged well casing — need a well service truck with the right equipment. These are not tasks a homeowner can tackle with hand tools.
Cost expectations: A service call runs $150–$500 for diagnosis and minor repairs, according to Angi well pump repair costs{:target=“_blank”}. A full submersible pump replacement typically runs $300–$2,000 depending on well depth and pump size. As Kocher Geo Well Drilling notes, homeowners should contact experts for electrical failures, repeated unsuccessful re-priming attempts, and pumps that won’t shut off.
The EPA private well guidelines{:target=“_blank”} recommend annual water quality tests for private well owners — catching a contamination issue early is far cheaper than discovering it after the pump fails.
For jet pump owners who need to restore prime after a repair, see how to prime a well pump.
Our well pump repair hub has a full overview to help frame the conversation before you call a contractor.
FAQ
Why did my well pump stop working?
A well pump stops working for four main reasons: a tripped circuit breaker, a failed pressure switch, a waterlogged pressure tank, or a burned-out pump motor or controller. The breaker check costs nothing. A pressure switch replacement costs about $25. A waterlogged tank costs $200+ to replace. If the first three don’t fix it, the problem is likely underground and needs a well service company.
How do I know if my well pump is bad?
The clearest signs are: the pump runs but no water reaches the faucets, the pump short-cycles more than 6 times per hour, your electric bill spikes without explanation, or the water starts to taste or smell different. A pump that hums but won’t start usually has a seized motor. Any of these symptoms beyond short cycling typically require a licensed well driller.
Well pump not working but breaker not tripped — what’s next?
Move directly to the pressure switch test. Tap the quarter-inch tube below the switch with a screwdriver handle while the breaker is on — a visible spark and pump activation mean the switch contacts are burned and need replacement. A new switch costs about $25 and takes 30 minutes to install. If that doesn’t restore flow, swap the pump controller ($75) and then test the pressure tank for waterlogging.
Can I fix a well pump myself?
Homeowners can reliably handle three repairs: pressure switch replacement, pump controller swap, and pressure tank diagnosis and replacement. Submersible pump replacement is a different situation — it requires pulling the pump from the well, which involves specialized equipment and is usually a two-person job. Most homeowners should leave pump-pulling to a licensed well driller.
How long does a well pump last?
Submersible well pumps typically last 8–15 years depending on well depth, water quality, and how hard the pump cycles. Pumps in sandy or mineral-heavy water tend to wear faster. Short cycling from a waterlogged tank also shortens pump life significantly. See our well pump lifespan guide for a full breakdown of what affects longevity.