Well Pump & Pressure Tank Troubleshooting

Almost every well problem shows up as one of four symptoms: no water at all, the pump short cycling (clicking on and off constantly), low pressure everywhere, or sputtering taps with air in the lines. Each symptom points at a different part of the system — and most of the time it's the cheap parts, the pressure tank or the pressure switch, not the pump itself. Work through the symptom that matches yours below, and you'll usually know which part is guilty before anyone picks up a phone.

A note on how to read this: start with the cheapest, most common causes first. Well contractors diagnose this way, and you should too. The pump — the expensive part — is the last thing to suspect, not the first.

Start here: match your symptom

Symptom	Most likely culprit	Go to
No water at all, nothing from any tap	Power, breaker, or pressure switch	No water at all
Pump clicks on and off every few seconds	Waterlogged pressure tank (lost its air charge)	Short cycling
Pressure is low at every fixture	Tank, switch, clogged filter, or low well yield	Low pressure everywhere
Taps sputter, water surges, cloudy bursts	Air getting in — low water level, leak, or check valve	Sputtering or air in the lines
Pump runs and never shuts off	Stuck check valve or a leak in the line	Pump runs and never shuts off

If you're not sure how the system is supposed to work in the first place, read the well water system explainer first — five minutes there makes everything below easier.

No water at all

When every tap is dry, work from the house back toward the well. The University of Nebraska Extension's well-troubleshooting guidance recommends exactly this order, because the fix is usually close to the house, not deep underground.

1. Is there power in the house? Sounds silly until the one time the answer is no. If the house has power, move on.

2. Check the well pump breaker or fuse. Well pumps run on their own 240-volt circuit. Open the breaker panel, find the one labeled "well" or "pump," and flip it fully off, then back on. Reset it once. If it trips again immediately, stop — a breaker that won't stay on means an electrical fault, and that's an electrician's or well contractor's job, not a second reset.

3. Look at the pressure gauge on the tank. It's the little round gauge near the bottom of the pressure tank. If it reads zero and the breaker is fine, the pump isn't getting power or isn't running — the pressure switch (the small gray box with a spring-loaded cover, usually mounted near the tank) is the next suspect. If the gauge shows pressure but nothing comes out of the taps, the problem is on the house side — a closed valve or a frozen line.

4. Listen. Have someone open a tap while you stand by the tank. A hum or click that never turns into running water suggests the pump is trying to start but can't — see the FAQ on the control box below.

5. Call a professional. If power is good, the breaker holds, and the gauge reads zero, you've exhausted the homeowner-safe checks. Tell the contractor what you found — "breaker holds, gauge reads zero, no sound from the pump" is worth ten minutes of their diagnostic time.

Pump short cycling (clicking on and off)

This is the one to take seriously. Short cycling — the pump starting and stopping every few seconds, or every time any water is used — is the fastest way to kill a well pump. Each start slams the motor with inrush current and heat; Franklin Electric's motor guidance says submersible motors need at least a full minute of run time per cycle to shed starting heat, and rapid cycling damages motor bearings and splines. Washington's state health department puts a number on it: pump motors in the 1–5 horsepower range shouldn't cycle more than six times per hour.

The cause is almost always the pressure tank. The tank's job is to store a pocket of compressed air that pushes water out while the pump rests. When that air charge is gone — a waterlogged tank — there's no cushion, so pressure collapses the instant any water leaves, and the pump fires up again. Here's how to confirm it.

1. Read the cut-in and cut-out. Open a tap and watch the pressure gauge. Note the pressure where the pump clicks on (cut-in) and where it clicks off (cut-out). Most systems are set to 30/50 or 40/60 — always a 20 psi spread. If the numbers look normal but the pump still races through them in seconds, the tank's drawdown (the water it can deliver between cycles) has collapsed.

2. Check the tank's air pre-charge. This is the definitive test, and it's safe if you follow the order:

1. Turn off power to the pump at the breaker.
2. Open the nearest faucet and let the gauge fall to zero. Leave the faucet open.
3. Put a tire gauge on the air valve (Schrader valve) at the top of the tank.
4. The reading should be 2 psi below your cut-in — 28 psi for a 30/50 system, 38 psi for a 40/60 system. This is the spec Nebraska Extension and tank-troubleshooting guides agree on; it's also what the factory ships the tank at for 40/60 setups.
5. If it's low, add air with a bike pump or compressor, then power up and run a normal cycle.
6. Check again in a week. If the air pressure has dropped, the bladder has a tear — re-airing won't save it. The tank needs replacing.

Two red flags mean the tank is done, no re-airing required: water spitting from the air valve when you press the gauge on (the bladder is ruptured), or the tank feeling heavy and full to a tap test (tap the side of the tank — a healthy tank rings hollow on top; a waterlogged one thuds solid).

3. Leave the pressure switch alone. If the air charge is fine but cycling persists, the pressure switch may be at fault — corroded contacts, a clogged sensing tube. Nebraska Extension is explicit: homeowners shouldn't adjust or work inside the pressure switch because it's wired to power and can cause serious injury. That's a pro visit, and it's one of the cheapest repairs in the well world.

Low pressure everywhere

If every fixture in the house lost pressure at once, the problem is in the system, not one faucet (a single weak fixture is a clogged aerator). Work this list:

What you see	Likely cause	Check
Gauge shows full pressure, taps are weak	Restriction between tank and fixtures	Whole-house filter or softener clogged; bypass it temporarily and see if pressure returns
Pressure dips and slowly recovers while using water	Tank losing its air charge	Run the short-cycling checks above
Pump runs, pressure never quite reaches cut-out	Well can't keep up, worn pump, or a leak	Note whether it's worse during dry spells — well yield is a contractor diagnosis
Pressure was fine, then dropped suddenly after plumbing work	Closed or half-closed valve	Walk the line from the tank: every valve handle should be parallel to the pipe

A whole-house sediment filter is the most common surprise here. Filters clog gradually, so the pressure loss creeps up over months and gets blamed on the well. If you have one, check its gauge differential or just swap the cartridge — it's the cheapest experiment available.

Sputtering or air in the lines

Sputtering means air is mixing with the water somewhere. Ranked by likelihood:

1. The water level dropped near the pump intake. During drought years or heavy-use periods, the water level in the well can fall far enough that the pump starts pulling air along with water. This usually comes with other clues: the pump running longer cycles than usual, or pressure fading during heavy use. Nebraska Extension flags exactly this pattern — the pump was set at a height that worked for a normal water level, and the aquifer moved.
2. A leak is letting air in. A crack in the drop pipe or service line can let air get sucked in on the intake side. If the sputtering started suddenly and there's no drought, this moves up the list.
3. The check valve is failing. The check valve keeps pressurized water from draining back down the well. When it leaks, water falls back, air takes its place, and the next cycle starts with a burst of air. This one is a professional diagnosis — but it's worth naming so you can describe the symptom accurately.
4. The tank is waterlogged. A tank with no air cushion sends pressure surges through the house that feel like sputtering. Run the tank checks — if the tank is the problem, you'll find it there too.

One caution: if sputtering appeared right after the well was serviced or the pump was replaced, say so when you call. Post-service air is usually trapped air working its way out, and a contractor will want to know the timeline.

Pump runs and never shuts off

A pump that runs continuously without reaching cut-out is either working against a leak or can't build pressure at all. Nebraska Extension gives a clean field test:

1. Shut off the water to the house (the valve after the pressure tank).
2. Watch the pressure gauge.
3. If the pressure holds steady, the check valves are doing their job and there are no leaks in the line to the house — but the pump may be worn, the well yield may have dropped, or a check valve in the well is stuck open.
4. If the pressure drops, there's a leak somewhere in the line or a check valve isn't holding. A soggy spot in the yard — anywhere but over the septic drainfield — is the classic sign of a broken water line.

Don't let a pump run dry indefinitely while you ponder this. A submersible running with no water to move will overheat and burn out, turning a valve job into a pump replacement. If you can't identify the cause within a reasonable test, shut the pump off at the breaker and call.

What each fix actually involves

It helps to know the rough shape of the bill before the contractor arrives — not exact numbers, which swing with region and access, but the order of things:

• Pressure switch: the cheap one. A pro visit and a part swap. This is why the switch is always worth ruling in or out early.
• Pressure tank: the mid-range one. The tank itself is a few hundred dollars plus labor; a straightforward swap takes a morning. Tanks last roughly a decade (Nebraska Extension says about 10 years, with some running far longer), and the industry's leading tank line carries a 7-year manufacturer warranty — so if yours is past 10 and acting up, replacement beats nursing it.
• Pulling the pump: the expensive one. The crew has to pull the drop pipe and pump out of the well, which is why everything in the pressure system exists partly to protect that investment. A quality submersible commonly runs 15–25 years when the tank and switch do their jobs — when a pump dies young, the pressure system is usually the real culprit, and it's worth saying so before the replacement goes in.

When troubleshooting won't help

Honesty section. This guide gets you to a diagnosis; these situations need a professional regardless of how handy you are:

• VFD (constant-pressure) systems. If your system has a variable-frequency drive — a control box with a digital display instead of a simple pressure switch — the troubleshooting is different and the electronics are sensitive. Nebraska Extension's guidance: make sure the professional you call is specifically familiar with VFD well systems.
• Anything inside an electrical box. Breaker resets are fine. Opening the pressure switch cover or the control box is not a homeowner job — 240 volts, no second chances.
• Pulling the pump or working down the well. Always a crew job, always.
• The well itself running dry. Dropping water levels, hydrofracturing, deepening the well — that's well-contractor territory, not a pressure-system problem.
• Contamination concerns. If troubleshooting reveals a cracked well cap, a flooded wellhead, or surface water getting in, get the water tested. Mechanical fixes and water safety are separate problems.