Troubleshooting Well Pump Problems: Step-by-Step
We walk through the same 8-step sequence our team uses to diagnose a dead well pump: starting with the breaker (free fix) and working down to pump motor failure (call a pro). For a broader overview of repair options, see our well pump repair guide. Most problems land in steps 2–4 and cost under $100 to fix yourself.
Quick Answer: Start at the circuit breaker — it costs nothing to check. If the breaker is fine, tap-test the pressure switch (the small box on a ¼-inch tube near the pressure tank). A visible spark means the switch is bad; replacement runs about $25. If water is surging instead of flowing steadily, jump to Step 7.
Video Guide
Video: “Most Common Reason for No Water!! Reset Pump Pressure Switch” by H2O Mechanic
What You’ll Need
Gather these before you start — discovering a missing tool mid-repair is the most common time-waster we see:
- Multimeter — tests for 240V at the breaker and checks voltage drop across the pressure switch
- Non-contact voltage tester — safety confirmation before touching any wires
- Flat-blade screwdriver — removes switch covers and taps the pressure switch tube
- Tire gauge — a standard automotive tire gauge fits the Schrader valve on top of the pressure tank
- Needle-nose pliers — handles wire terminals and labeling
- Nail file — for the emergency temporary fix in Step 4 only
Safety First: Cut Power Before Touching Anything
Well pumps run on 240V — the same voltage as an electric dryer, and enough to be fatal. Before removing any switch cover or touching any wire:
- Locate the double-pole breaker in your main panel (usually labeled “well pump” or “water pump”)
- Flip it to OFF
- Confirm power is dead with your non-contact voltage tester at the pressure switch terminals — never skip this step
Do not proceed with DIY work if you smell burning, see scorched wires, or hear buzzing at the electrical panel. Those are signs of damage beyond the pump circuit itself — call a licensed electrician.
Step-by-Step Well Pump Diagnostic
These 8 steps mirror the diagnostic sequence a trained well driller follows. If you’ve already checked the breaker, jump to Step 2. Each step ends with a branch so you can skip what you’ve already tried.
The sequence is based on the approach documented in Family Handyman’s well pump repair guide{:target=“_blank”}, refined here with cost data and branching logic that linear guides leave out.
Step 1 — Check the Circuit Breaker
Find the double-pole breaker for the well system. A tripped breaker often sits in the middle position — not fully on, not fully off — which looks like “on” at a glance but cuts power entirely.
Reset it: push firmly to OFF first, then flip to ON.
Cost if this is the problem: $0.
Branch: Pump starts? Done. Breaker trips again immediately after reset? Stop — this signals a motor fault serious enough to require a pro. Jump to Step 8. Breaker holds but still no water? Move to Step 2.
If your well pump is completely silent with no water at any faucet, the guide on well pump not working covers additional electrical checks beyond the breaker.
Step 2 — Check the Well Switch Near the Pressure Tank
Many systems include a dedicated switch box mounted on the wall near the pressure tank, separate from the main breaker. It is easy to accidentally bump it off during other utility work.
Confirm the switch is in the ON position.
Cost if this is the problem: $0.
Branch: Switch was off and water returns? Done. Switch was already on? Move to Step 3.
Step 3 — Tap-Test the Pressure Switch
The pressure switch — the small box on a ¼-inch tube coming off the pressure tank — signals the pump to run whenever line pressure drops below the cut-in threshold (30 PSI on a 30/50 system, 40 PSI on a 40/60 system).
To test it: restore power to the system, remove the switch cover, and tap the ¼-inch tube below the switch sharply with a screwdriver handle. A visible spark and immediate pump activation confirm the switch is faulty and needs replacement. Replacement switches cost about $25 at any hardware store.
No spark, no pump response — the switch is not the problem. Move to Step 5.
Cost if this is the problem: ~$25.
Branch: Spark confirms bad switch? Proceed to Step 5 for replacement. No spark? Move to Step 5 anyway — the controller is next.
Step 4 — Emergency Filing (Temporary Fix Only)
If the switch contacts look pitted or burned when you have the cover off, a nail file can restore enough conductivity to get water flowing while you wait on a replacement. This is a temporary measure only — schedule permanent switch replacement within a day or two.
- Cut power and verify with the voltage tester
- File the contact surfaces lightly until they are clean and bright
- Restore power and test
Cost: $0.
This buys time if you are without water right now. It does not fix the underlying failure.
Step 5 — Replace the Pressure Switch
- Cut power and verify with the tester
- Photograph the wire connections before touching any terminal — this is the step most people skip and later regret
- Label each wire with a small piece of tape
- Unscrew the old switch from the ¼-inch tube
- Wrap Teflon tape around the threads of the new switch before installing
- Mount the replacement in the same orientation as the original
- Reconnect wires using your labels and photo as reference
For a full walkthrough including photos of each connection point, see our well pump pressure switch guide.
Cost: ~$25.
Branch: Water restored? Done. Still no water? Move to Step 6.
Step 6 — Replace the Pump Controller
The pump controller — a separate box near the pressure tank — handles starting and running current for the motor. If replacing the pressure switch did not restore water, this is the next component to test.
Take the old unit to the hardware store for an exact replacement. Same-brand models snap onto the existing mounting box with no rewiring needed. Cut power, swap covers, restore power, test.
Cost: ~$75.
Branch: Water restored? Done. Still nothing? Move to Step 7.
Step 7 — Diagnose a Waterlogged Pressure Tank
Symptom: Water surges or pulses at faucets instead of flowing steadily, or the pump short cycles — turning on and off every few seconds instead of running for several minutes at a time.
The pressure tank holds an air bladder that absorbs pressure spikes and keeps flow smooth. When the bladder fails, the tank fills completely with water and loses its buffer. Three tests confirm waterlogging:
Test 1 — Air valve check: Unscrew the plastic cap on the Schrader valve near the top of the tank. Press the valve pin with a small screwdriver. Water discharge means the tank is waterlogged.
Test 2 — Tire gauge method: Check your pressure tank with a standard automotive tire gauge on the Schrader valve. The reading should be 2 PSI below your system’s cut-in pressure — 28 PSI for a 30/50 system, 38 PSI for a 40/60 system. A reading near zero means the bladder has failed and the tank is waterlogged.
Test 3 — Rock test: Push the top of the tank. A healthy tank has an air pocket and shifts when nudged. A waterlogged tank is solid water throughout — it will not move, and the top feels dense and heavy.
A waterlogged pressure tank cannot be repaired, only replaced. For sizing guidance and the full swap procedure, see our guide on pressure tank sizing and replacement.
Cost: $200+ for the tank, plus $300–$500 for installation if you hire a contractor.
Branch: Tests confirm waterlogging? Replace the tank. All three tests negative? Move to Step 8.
Step 8 — When the Problem Is Underground or In the Well
You have reached the limit of DIY well pump troubleshooting when:
- The pump runs continuously but delivers no water to any faucet
- The pressure switch clicks rapidly without water delivery at any tap
- Water has sediment, unusual color, or odor
If your well pump runs continuously but delivers no water, the problem is almost certainly underground — a failed check valve, broken water line, or damaged well casing connector. These require a licensed well driller with a camera inspection; DIY repair is not feasible.
Sediment in your well water almost always means a check valve has failed. Filter installation can protect appliances short-term, but the valve still requires professional inspection to rule out a casing break or compromised well lining.
Cost for professional service: $300–$2,000+ depending on what the camera inspection finds and whether the pump needs to be pulled.
Quick-Reference Troubleshooting Table
Well pump troubleshooting at a glance — match your symptom to the likely cause and cost before you start:
| Symptom | Most Likely Cause | DIY Fix | Typical Cost |
|---|---|---|---|
| No water, pump silent | Tripped breaker or bad pressure switch | Check breaker, tap-test switch | $0–$25 |
| Pump runs, no water | Failed check valve or underground break | Call a pro | $300–$2,000 |
| Water surges or pulses | Waterlogged pressure tank | Tire gauge check, replace tank | $200+ |
| Pump cycling on and off every few seconds | Waterlogged tank or bad pressure switch | Rock test, switch tap-test | $25–$200+ |
| Low pressure only | Pressure switch settings or low tank air | Adjust switch (30/50 or 40/60 PSI) | $0–$25 |
| Sediment in water | Failed check valve | Filter + pro inspection | $50–$300 |
When to Stop DIYing and Call a Pro
Call a licensed well driller if any of these apply:
- The breaker trips again immediately after resetting — this signals a motor fault, not a switch or controller issue
- You smell burning, see scorched wires, or hear buzzing at the electrical panel
- The pump runs without stopping and no faucet in the house has water
- You’ve replaced both the pressure switch and the controller and the problem persists
- Water has sediment, discoloration, or odor — per EPA private wells water quality guidance{:target=“_blank”}, discolored or odorous well water requires lab testing before it is safe to drink
Getting an accurate diagnosis first saves money. Licensed well drillers charge $300–$2,000+ for pump pulls — but that beats buying a $200 pressure tank when the actual problem is a broken line 100 feet underground.
FAQ
Why does my well pump have power but no water?
The most common cause is a failed pressure switch or pump controller (Steps 3–6 above). The switch tells the pump when to run — if it fails, the pump gets no activation signal even with full power at the panel. Replacing the switch costs about $25; the controller runs about $75. If both components have been replaced and you still have no water, the problem is underground: a failed check valve, broken water line, or a submersible pump that has failed and needs to be pulled.
How do I know if my pressure tank is waterlogged?
Three tests confirm a waterlogged tank. Press the Schrader valve pin on top of the tank — water discharge means waterlogged. Check air pressure with a tire gauge; it should read 2 PSI below cut-in (28 PSI for a 30/50 system, 38 PSI for a 40/60 system), and a reading near zero means bladder failure. Push the top of the tank — a healthy tank shifts slightly when nudged; a waterlogged one is solid water throughout and will not move.
What does it mean when the well pump keeps clicking?
Rapid clicking from the pressure switch means short cycling — the pump fires on and off every few seconds rather than running for several minutes. The cause is almost always a waterlogged pressure tank. Once the bladder fails, the system loses its pressure buffer and the switch fires continuously. See our guide on pump cycling on and off for step-by-step diagnosis and the repair options at each severity level.
How long does a well pump last?
Submersible pumps typically last 10–15 years; jet pumps can run 10–20 years with proper maintenance. A pump failing before 10 years usually points to a water quality problem — sediment or hard minerals — or cumulative damage from persistent short cycling. The 5 common well pump problems{:target=“_blank”} guide from Fresh Water Systems covers the most frequent causes of premature failure.
Can I troubleshoot a well pump myself?
Yes, for the electrical, pressure switch, and pressure tank steps (Steps 1–7 above). These account for the majority of well pump failures and cost between $0 and $200 to fix yourself. Anything involving pulling the pump from the well casing requires a licensed well driller — the lifting equipment, safety protocols, and permits are not practical for homeowner DIY in most states.