Well Pump Not Working? Step-by-Step Troubleshooting Guide

It's 6:30 AM, you turn on the shower, and nothing comes out — your well pump is not working. No water. Not low pressure — zero water. If you're on a private well, a well pump not working is the kind of morning that sends your stress level through the roof.

Before you panic, though, there's a real chance the fix is something simple. Roughly half of all "well pump not working" service calls turn out to be something other than a dead pump — a tripped breaker, a stuck pressure switch, a waterlogged tank, or a blown fuse in the control box. These are problems you might be able to identify yourself, saving you a $150 to $300 emergency service call.

This guide walks through a systematic well pump troubleshooting process, from the easiest checks to the ones that need a professional. Even if you can't fix it yourself, knowing what you've ruled out helps the technician diagnose faster.

Before You Start: Safety First

Well pumps run on 240 volts — enough to seriously injure or kill you. Before troubleshooting anything electrical:

• Never touch wiring or electrical connections while the circuit is energized
• When checking the pressure switch, stand on a dry surface and use one hand (keep the other behind your back or in your pocket to prevent current from crossing your chest)
• If you see scorched wires, burned insulation, or smell melted plastic, stop and call an electrician or well pump technician
• If your well head is submerged in standing water (after flooding), do not touch any electrical components until a professional inspects the system

With that out of the way, let's start troubleshooting.

Step 1: Check the Circuit Breaker

This sounds almost too simple, but a tripped breaker is the single most common reason behind a well pump not working. Power surges, lightning in the area, a momentary utility outage, or even a motor hiccup can trip the breaker. It happens all the time.

Go to your electrical panel and find the breaker labeled "Well Pump," "Well," or "Water Pump." It's typically a double-pole breaker (two switches ganged together). If it's in the middle position — not fully on, not fully off — it's tripped.

To reset: Flip the breaker fully OFF first, wait 5 seconds, then flip it to ON. If the breaker trips again immediately, don't keep resetting it — repeated tripping means there's a short circuit, ground fault, or overloaded motor. That's a "call a professional" situation.

Also check: Some well systems have a separate disconnect switch near the pressure tank or wellhead, and some have a GFI outlet or breaker in the circuit. Make sure all are in the ON position.

Step 2: Check the Pressure Switch

The pressure switch is the small gray or black box mounted on the plumbing near your pressure tank. It monitors water pressure and tells the pump when to turn on and off. These switches are reliable but not bulletproof, and they're the second most common reason a well pump stopped working unexpectedly.

Remove the cover from the pressure switch (it usually pulls off or has a single screw). Look inside for:

• Burned or pitted contacts: The switch has two sets of metal contact points that open and close. If they're blackened, pitted, or have visible arc marks, the switch is worn out. Replacement switches cost $15 to $40 at any hardware store, and swapping one is a 15-minute job if you're comfortable with basic wiring.
• Insect nests: Ants, spiders, and earwigs love the warm, sheltered space inside pressure switches. An ant colony bridging the contact points is a surprisingly common cause of pump failure. Clean out any debris and test the switch.
• The reset lever: Many pressure switches have a small metal lever that acts as a manual override and low-pressure cutoff. If the lever has popped out or dropped to the off position, push it back in and hold it for 30 seconds while you listen for the pump to start. If the pump starts and runs normally, the lever reset may be all you needed.

If you hold the lever in and the pump doesn't start (and you've confirmed the breaker is on), the problem is downstream — in the control box, the wiring, or the pump motor itself.

Step 3: Inspect the Pressure Tank

Your pressure tank is the large cylindrical tank (usually blue, gray, or galvanized steel) near where the water line enters your home. It stores pressurized water and uses an internal air bladder to maintain system pressure between pump cycles.

Tap test: Knock on the side of the tank from top to bottom. A working tank sounds hollow at the top (air) and solid at the bottom (water). If the entire tank sounds solid, the bladder has failed and the tank is waterlogged. A waterlogged pressure tank is a frequent cause of a well pump not working properly. Replacing a failed pressure tank costs $250 to $600 installed.

Air pressure check: Using a tire gauge, check the Schrader valve on top of the tank. With the system depressurized (pump off, faucet open), the air charge should read about 2 PSI below the cut-in pressure — about 28 PSI for a standard 30/50 system. If the gauge reads zero or water comes out, the bladder is ruptured.

Step 4: Check the Control Box (Submersible Pumps)

If you have a submersible pump (the most common type — the pump sits down in the well, not in your basement), there's a control box mounted on the wall near your pressure tank. This box contains the starting capacitor and relay that get the pump motor spinning. It's one of the more common failure points because capacitors have a limited lifespan.

Open the control box lid (after confirming the breaker is off). Look for:

• Swollen or leaking capacitors: If the top is bulging or there's oily residue, the capacitor has failed. This is a $30 to $80 part — but capacitors store charge even when power is off, so discharge them before handling.
• Burned relay: The relay (contactor) has visible contact points. If they're welded together or heavily carbonized, the relay needs replacement.
• Loose or corroded wires: Vibration and heat can loosen wire connections over time. With the power off, gently tug each wire connection to check for looseness. Re-tighten any that move.

A full control box replacement runs $150 to $350 including labor. Note that shallow-well jet pumps don't have a separate control box — the starting components are built into the motor housing.

Step 5: Listen for the Pump

If the breaker is on, the pressure switch is engaged, and the control box looks intact, it's time to determine whether the pump motor is actually running. Stand near the wellhead (the pipe sticking up from the ground, usually with a cap) and have someone inside turn on a faucet.

Submersible pumps: You won't hear the motor directly — it's hundreds of feet underground. Listen for the pressure switch click and feel for vibration on the water pipe coming out of the well. If the switch clicks but there's no vibration and no flow, your well pump is not working because the motor is likely dead or the wiring has broken.

Jet pumps (above-ground): If the motor hums but doesn't spin, the capacitor has likely failed. If it spins but no water comes out, the pump may have lost its prime — check the priming plug on top of the housing. If the motor does nothing at all, it's dead or there's a wiring issue.

If the pump is humming but not spinning, turn off the breaker immediately — a stalled motor draws extremely high amperage and will overheat quickly.

Step 6: Test the Well Itself

Sometimes you're getting no water from well pump fixtures, but the pump itself is fine — the well has run dry or the water level has dropped below the pump's intake. This is more common than people think, particularly during late summer and fall when water tables are at their lowest.

If you had water earlier in the day (or yesterday) and it gradually weakened before stopping, a low water level is a strong possibility. The well needs time to recharge. Stop all water use for 12 to 24 hours, then try again. If water returns but runs out again quickly, your well's yield is declining and you'll need a professional assessment.

A well contractor can measure the static water level using a water level indicator — a weighted sensor on a cable that beeps or lights up when it hits water. This measurement, compared to your pump's installation depth, tells you whether the pump is submerged or sitting in air.

Step 7: When to Call a Professional

Call a licensed well pump contractor if any of these apply:

• The breaker trips repeatedly after resetting
• You've checked the pressure switch, control box, and tank with no obvious issues
• The pump motor tests dead (no response to power)
• You hear grinding, screeching, or knocking noises from the pump
• Water is discolored, sandy, or smells like rotten eggs (sulfur)
• The well has been dry for more than 24 hours
• You see water pooling around the wellhead
• You're uncomfortable working with 240-volt electrical systems (this is perfectly reasonable — there's no shame in calling a pro)

When you call about your well pump not working, have this ready: pump age (if known), well depth, symptoms, and what troubleshooting you've already tried. This helps the technician arrive with the right parts.

Estimated Costs for Common Repairs

Understanding typical repair costs helps you evaluate whether a quote is reasonable.

• Service call / diagnostic fee: $75 to $200 (often applied toward repair cost)
• Pressure switch replacement: $100 to $250 (parts + labor)
• Control box or capacitor replacement: $150 to $400
• Pressure tank replacement: $250 to $600
• Check valve replacement: $150 to $400
• Submersible pump replacement: $800 to $2,500 (varies by depth)
• Jet pump replacement: $400 to $1,200

Get at least two quotes for any repair over $500. Ask whether the quote includes pulling and reinstalling the pump, new wiring, and the drop pipe — some contractors quote the pump only and add labor separately.

Why Your Well Pump Keeps Not Working — and How to Prevent It

A few simple measures dramatically reduce the odds of waking up to no water.

Install a pump protection device. Products like the Pumptec monitor the pump's electrical signature and shut it off before damage occurs. These devices cost $150 to $400 and can double pump life.

Get an annual well checkup. A yearly inspection covers the pressure tank, pressure switch, electrical connections, and a basic water quality test. Most contractors charge $100 to $200.

Install a surge protector. A dedicated surge protector on the pump circuit ($50 to $150) protects against lightning and utility power surges — a leading cause of motor failure.

Know your system. Write down your well depth, pump depth, pump model, and installation date. Keep it where you can find it. When something goes wrong at 10 PM, you'll be glad you have it.

Frequently Asked Questions

Why is my well pump not building pressure?

A pump that runs but can't reach the cut-out pressure (usually 50 or 60 PSI) typically has worn impellers, a leak in the drop pipe, a failing check valve that lets water drain back into the well, or a partially closed gate valve somewhere in the system. If the pump is more than 10 years old and gradually lost its ability to build pressure, the impellers have likely eroded and the pump needs replacement. Learn more about expected lifespans in our well pump lifespan guide.

Can I troubleshoot my well pump myself?

You can safely check the breaker, inspect the pressure switch, test the pressure tank's air charge, and listen for the pump — these checks cover about 40% of failures. Anything involving testing wiring with a multimeter or pulling the pump should be left to a licensed contractor. If your diagnostics point toward a failing pump, read our guide on the signs you need a new well pump.

How quickly can a well pump be repaired or replaced?

Simple repairs — pressure switch, capacitor, or control box — take 30 minutes to 2 hours. Pulling and replacing a submersible pump takes 3 to 8 hours depending on well depth. Most well contractors offer same-day or next-day service for emergency calls, but availability varies. During drought conditions or extreme cold snaps, wait times can stretch to 2 to 3 days because demand surges.

My well pump works intermittently — what's going on?

If your well pump is not working consistently, intermittent operation usually points to a loose electrical connection, a pressure switch with pitted contacts that make inconsistent contact, an overheating motor that trips its thermal overload then resets after cooling, or a control box capacitor that's marginal — it works sometimes and fails other times. Have a technician check the amp draw and electrical connections. Intermittent problems get worse, not better, and the unpredictability makes them particularly frustrating to live with.

Should I replace my well pump myself to save money?

Replacing a submersible pump means pulling hundreds of feet of pipe and wire from a narrow borehole. A single mistake — dropping the pump, cross-threading a fitting, pinching a wire — can turn a $1,500 job into a $5,000 disaster. Most homeowners save money by hiring a licensed well contractor who warranties both parts and labor.