Well Pump Runs but No Water: 6 Fast Fixes to Check First

TL;DR: When a well pump runs but no water comes out of the faucet, the cause is almost always one of six things: a tripped or worn pressure switch, a waterlogged pressure tank, a lost prime, a stuck or leaking foot valve, a dropped water table, or a cracked pipe underground. Work through them in that order before you call a well contractor — most of the cheap fixes take under 20 minutes to rule out.

_Last reviewed: August 2026 · 6 min read_

Nothing rattles a homeowner faster than flipping on the kitchen tap and hearing the pump hum away in the basement while nothing comes out. The good news: this specific symptom — pump running, no water — has a short, well-known list of suspects, and most of them don't require a plumber.

Okoniq Property Hub logs your well and pump service dates automatically, so if you're a landlord managing this on a rental, you're not digging through paper receipts to figure out when the tank was last replaced.

Is the pressure switch or pressure tank the problem?

Start here because it's the most common cause and the cheapest to check. A pressure switch tells the pump when to turn on and off based on tank pressure, and if it's stuck, corroded, or set wrong, the pump can run continuously without ever building enough pressure to push water through the pipes.

Look at the pressure gauge near the tank. If the needle sits at zero or barely moves while the pump runs, the switch or its contacts may be the issue. Next, thump the side of the pressure tank. If it sounds solid all the way down rather than hollow at the top, the tank has gone waterlogged — the internal air bladder has failed and the tank filled entirely with water, leaving no air cushion to push water out to the house. A waterlogged tank is a straightforward swap, and it's one of the repairs worth adding to your maintenance log the same way you'd track 10 home repairs you can safely do yourself — this one usually isn't DIY, but knowing what failed saves a wasted service call.

Did the pump lose its prime?

A pump that's lost its prime spins but moves air instead of water, and it will run indefinitely without delivering anything. This happens most often with jet pumps sitting above the well (shallow-well or two-line jet pumps), less often with submersible pumps that sit down in the well itself.

Signs of a lost prime: the pump sounds unusually smooth or light, almost like it's spinning freely, and there's no pressure buildup at all no matter how long it runs. Shallow-well jet pumps need to be re-primed manually by pouring water into the priming port with the check valve closed. If you're re-priming a pump every few weeks, that's not a fix — it's a symptom of a leak somewhere in the suction line, and it's worth tracking the pattern the same way you'd document any recurring issue in a first-time landlord checklist, because recurring priming loss usually means a bigger repair is coming.

Could the foot valve or check valve be stuck?

A stuck-open foot valve lets water drain back down the pipe every time the pump shuts off, which means the pump has to re-prime itself every single cycle and never catches up. The foot valve sits at the bottom of the intake pipe in the well and is supposed to hold water in the pipe between pump cycles.

You can sometimes tell by listening: if the pump cycles on and runs for a few seconds, shuts off, then almost immediately has to restart, water is draining back down between cycles. Pulling the pipe to inspect or replace the foot valve is a job most people hand off to a well contractor, since it usually means pulling 20 feet or more of drop pipe out of the casing.

| Symptom | Likely Cause | Typical Fix Difficulty | |---|---|---| | Gauge stays at zero, tank sounds solid | Waterlogged pressure tank | Moderate — tank swap | | Pump spins smooth, no pressure ever builds | Lost prime | Easy if shallow well, otherwise call a pro | | Pump short-cycles, restarts every few seconds | Stuck foot/check valve | Hard — pipe pull required | | Pump runs longer and longer over weeks | Dropping water table | Depends on well depth, may need deepening |

Has the water table dropped below the pump intake?

A well that's run dry, or a static water level that's dropped below where the pump or intake pipe sits, will produce this exact symptom — the pump runs but pulls only air. This is more common in late summer during drought, in shallow wells (under roughly 100 feet), and in areas with heavy seasonal irrigation nearby.

A telltale pattern: the pump used to run for a few seconds per cycle and now runs longer and longer over a period of weeks before you notice no water at all. That's the well slowly losing capacity rather than a sudden mechanical failure. A well contractor can measure the static water level and tell you whether the fix is lowering the pump, or something more involved. If you're evaluating a property with a private well before buying, this is worth adding to your list right alongside the items in a first rental property due diligence checklist — well capacity is easy to overlook until it's your problem.

When should you stop troubleshooting and call a well contractor?

Call a licensed well contractor once you've ruled out the pressure switch and tank and the symptom still points to something underground — a stuck foot valve, a cracked pipe, or a dropped water table all require pulling pipe or measuring the well itself, and neither is a DIY job. A cracked or disconnected pipe between the pump and the house is less common but produces the identical symptom: pump runs, no water reaches the tap, because the water is leaking out into the ground before it ever gets there.

If you've swapped the tank, confirmed the switch works, and the pump still won't build pressure, that's the point to stop guessing. A well service call to pull the pump and inspect the drop pipe, splices, and foot valve is far cheaper than replacing a submersible pump that didn't actually need replacing.

FAQ

Why does my well pump run constantly but never build pressure?

This almost always means the pump is moving air instead of water — either it's lost its prime, the foot valve is stuck open and letting water drain back, or the water table has dropped below the intake. Check the pressure switch and tank first since those are the fastest to rule out.

Can a bad pressure switch cause no water at all?

Yes. If the switch's contacts are corroded or the switch is set wrong, the pump may run but never signal the system correctly, and you'll see a pressure gauge that stays near zero the entire time the pump runs.

How do I know if my pressure tank is waterlogged?

Thump the tank from top to bottom. A healthy tank sounds hollow near the top, where the air cushion sits. If it sounds solid the entire way down, the air bladder has failed and the tank is fully waterlogged.

Is it normal for a well pump to short-cycle?

No. A pump that turns on, runs briefly, shuts off, and restarts within seconds usually means water is draining back down the pipe between cycles, most often because the foot valve or check valve is stuck open.

Should I try to re-prime the pump myself?

If it's a shallow-well jet pump sitting above ground, re-priming through the priming port is a reasonable DIY step. If the pump is submersible and sits down in the well itself, or if you find yourself re-priming repeatedly, call a well contractor instead.

<div class="glass rounded-2xl p-5 mt-7 max-w-4xl border border-red-400/30 bg-red-500/5"> <div class="flex items-start gap-3"> <span class="text-2xl flex-shrink-0">⚠️</span> <div class="flex-1 min-w-0"> <p class="text-red-200 text-sm font-bold">Not tax advice</p> <p class="text-slate-300 text-xs mt-1 leading-relaxed"> This post assumes a standard residential well setup with a jet or submersible pump and a conventional pressure tank. It does not account for your well's specific depth, local water table conditions, or state well-contractor licensing requirements. Well systems vary and misdiagnosing a pump issue can damage equipment. Call a licensed well contractor before opening electrical components or pulling pipe if you're unsure. </p> </div> </div> </div>