Well Pump Repair: Complete Troubleshooting Guide
Check the circuit breaker first. A tripped breaker is the number one reason for sudden water loss from a private well, and it takes 10 seconds to fix. If the breaker is fine, the problem is almost always the pressure switch ($25 part), the pump controller ($75), or the pressure tank ($200 and up). Most above-ground well pump repairs cost under $100 in parts and take less than an hour.
We built this guide to walk you through every common well pump problem, from no water at all to low pressure to a pump that cycles on and off every few seconds. Use the symptom table below to find what matches your situation, then follow the link to the detailed fix.
| Symptom | Most Likely Cause | DIY? | Guide |
|---|---|---|---|
| No water at all | Tripped breaker or failed pressure switch | Yes | Well pump not working |
| Pump runs but no water | Lost prime, failed check valve, low water table | Maybe | Pump runs but no water |
| Pump cycles on/off rapidly | Waterlogged pressure tank | Yes | Pump cycling on and off |
| Low water pressure | Pressure switch needs adjusting or tank failing | Yes | Step-by-step well pump troubleshooting |
| Pump hums but won’t start | Bad motor capacitor or seized motor | Pro | Well pump motor repair |
Video Guide
Video: “Low Water Pressure - Well Pump Problems? Check This First” by Silver Cymbal
This Guide Is for You If…
- You have a private well and something is wrong with your water supply
- You want to understand the problem before calling (or instead of calling) a well service company
- You are comfortable flipping a breaker and checking basic components
This guide is NOT for you if:
- You are on city or municipal water — call your water utility
- Your water looks, smells, or tastes wrong but pressure is fine — see our well water quality guide
- You need a new well drilled or a full system installed — see our well pump installation cost guide
Diagnose Your Problem
Start at the top and work down until you find what matches.
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No water comes out of any faucet — Check the circuit breaker panel. If it is tripped, reset it once. If it trips again immediately, stop and call a professional. A repeatedly tripping breaker indicates a serious pump malfunction. If the breaker is fine, the pressure switch is the next suspect. See well pump not working.
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The pump runs but no water comes out — The pump has likely lost its prime, or a check valve has failed. This can also mean the water table has dropped below the pump intake. See pump runs but no water.
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The pump turns on and off every few seconds — This is called short cycling. It almost always means the pressure tank is waterlogged (the air bladder has failed and the tank is full of water instead of maintaining air pressure). A waterlogged tank cannot be repaired — it must be replaced. See pump cycling on and off.
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Water pressure is low or inconsistent — Start with the pressure switch. Most systems run at 30/50 PSI (turns on at 30, off at 50) or 40/60 PSI. A failing switch, clogged sediment filter, or partially closed valve can all cause low pressure. See step-by-step well pump troubleshooting.
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The pump hums but does not spin — This points to a motor issue. On above-ground jet pumps, a bad start capacitor ($15 to $30) is the most common fix. On submersible pumps, motor problems require pulling the pump from the well — call a professional. See well pump motor repair.
DIY vs Professional Repair
The simplest way to decide: if the repair is above ground, you can probably handle it yourself. If the repair involves pulling anything out of the well, call a professional.
DIY-Friendly Repairs
| Repair | Part Cost | Time |
|---|---|---|
| Pressure switch replacement | ~$25 | 30 min |
| Pump controller replacement | ~$75 | 20 min |
| Tank air pressure check | Free (tire gauge) | 5 min |
| Pressure tank replacement | $200+ | 1-2 hours |
Professional-Required
| Repair | Typical Cost |
|---|---|
| Submersible pump replacement | $800–$2,000 |
| Well casing repair | $1,000–$4,000 |
| Electrical diagnosis | $150–$300 service call |
| Drop pipe repair | $500–$1,500 |
For a full cost breakdown by repair type, see our guide on well pump repair costs. For help deciding between fixing your current pump or replacing the whole unit, see when to repair vs replace a well pump.
How Your Well Pump System Works
A private well system has four main components: the pump (sits inside the well, either submersible or above-ground jet pump), the pressure tank (stores water under pressure in your basement or utility room), the pressure switch (mounted on the tank, triggers the pump on and off), and the circuit breaker (protects the system from electrical faults).
The pressure cycle works like this: when you open a faucet, water flows from the pressure tank and the pressure drops. When it hits the low setting (30 PSI on most systems), the pressure switch turns the pump on. The pump refills the tank until the pressure reaches the high setting (50 PSI), and the switch shuts the pump off. The most common PSI pairings are 30/50 and 40/60.
Understanding this cycle matters because most well pump problems trace back to one of these four components. A failed pressure switch, a waterlogged tank, or a tripped breaker accounts for the majority of service calls — and all three are DIY-fixable for under $200.
Maintenance to Prevent Future Problems
Regular maintenance catches small problems before they become expensive emergencies.
- Monthly: Listen for short cycling (pump on/off every few seconds). Run each faucet to check pressure consistency.
- Quarterly: Check the pressure tank air charge with a tire gauge. It should read 2 PSI below your cut-in pressure (28 PSI for a 30/50 system).
- Annually: Have your well water tested. Inspect visible pipes, fittings, and the pressure tank for corrosion or leaks.
- Seasonally: Insulate exposed pipes before winter. Frozen pipes are a common cause of well pump damage in cold climates.
For the full seasonal checklist, see our well pump maintenance guide. To understand how long your current system should last, see well pump lifespan.
For EPA guidelines on protecting your well water, see the EPA private well protection guidelines{:target=“_blank”}.
FAQ
What is the average cost of a well pump repair?
Most above-ground repairs cost $25 to $200 in parts if you do the work yourself. A pressure switch runs about $25, a pump controller about $75, and a pressure tank starts at $200. Professional service calls add $150 to $300 in labor. Submersible pump replacement — the most expensive common repair — runs $800 to $2,000 installed. See our full well pump repair cost breakdown.
How many years does a well pump usually last?
Submersible well pumps last 8 to 15 years. Above-ground jet pumps average 5 to 10 years. Pressure tanks last 10 to 15 years, and pressure switches last 5 to 10 years. Hard water, sediment, and frequent cycling all shorten lifespan. See well pump lifespan for component-by-component details.
Is it cheaper to repair or replace a well pump?
For above-ground components (switch, controller, tank), repair is almost always cheaper — parts cost $25 to $200 versus $800 or more for a new submersible pump. For submersible pumps older than 10 years, replacement is usually more cost-effective than repeated repairs. We use the 50% rule: if the repair cost exceeds 50% of a new pump, replace it. See when to repair vs replace a well pump.
How to tell if a well pump is going bad?
Five warning signs: the pump cycles on and off every few seconds (short cycling), water pressure drops gradually over weeks, the pump runs continuously without shutting off, you hear grinding or humming noises from the pump, or your water turns sandy or discolored. Any of these warrants investigation. For a structured diagnostic, see our well pump problems guide.
Can well pumps be repaired?
Yes — above-ground components like the pressure switch, pump controller, and pressure tank can all be replaced by a homeowner with basic tools. Submersible pump motors can sometimes be repaired by a professional, but replacement is more common for units older than 8 years. The key question is whether the repair makes financial sense versus installing a new unit. For help with that decision, see the Family Handyman well pump repair guide{:target=“_blank”} or our repair vs replace guide.
For more guides on private well systems, septic maintenance, and drain repair, visit HomewellFix.