How to Increase Water Pressure from Your Well Pump

Check your pressure tank gauge first

Low water pressure usually means your pressure tank — the metal tank that stores water between pump cycles — is not holding air properly. Before you adjust anything, look at the gauge on the side of the tank. Most household systems run between 40 and 60 pounds per square inch (PSI), with the pump turning on around 40 PSI and shutting off around 60 PSI.

If the gauge reads below 40 PSI when the pump is running, or if pressure drops quickly after the pump stops, the tank's air bladder has likely failed. The bladder is an internal balloon that separates air from water; when it ruptures, water fills the entire tank and the pump has nowhere to push against, so pressure stays low.

You can test this yourself: turn off power to the pump, open a faucet to drain the tank completely, then listen near the tank drain valve. If water comes out instead of air, the bladder is gone and the tank needs replacement — this is not a repair you can do yourself.

Key Takeaways

• A failed pressure tank bladder is the most common cause of low well water pressure and requires replacing the entire tank.
• You can adjust the air pressure inside a working tank yourself by adding air with a bicycle pump, but only if the bladder is intact.
• The pump's pressure switch controls when the pump turns on and off; adjusting it changes your system's pressure range and requires a wrench and caution.
• Sediment clogging the pressure tank outlet or a failing pump motor are less common causes that usually require a professional to diagnose.
• If pressure is low only at one faucet or fixture, the problem is downstream in your plumbing, not the well system itself.

Add air to the pressure tank if the bladder is still working

If the tank gauge shows low pressure but air came out when you drained it, the bladder is probably still intact — it just needs more air. Pressure tanks lose air over time, especially in cold climates where air contracts. You can refill it yourself with a bicycle pump or an air compressor.

Turn off the pump at the breaker. Drain the tank by opening the lowest faucet in the house or the drain valve on the tank itself. Once it is empty, locate the air valve on top of the tank — it looks like a tire valve on a car. Attach your bicycle pump or air compressor and add air until the gauge reads about 2 PSI below your pump's cut-in pressure (usually around 38 PSI if your pump turns on at 40 PSI).

Turn the pump back on and let it run until the gauge reaches your target pressure — typically 60 PSI. If pressure climbs normally and holds steady, the bladder is fine and you have solved the problem. If pressure drops again within a few hours, the bladder has a slow leak and the tank will need to be replaced.

Adjust the pressure switch to raise your system's pressure range

The pressure switch is a small box mounted on the pipe coming out of the tank. It tells the pump when to turn on and when to stop. If your system is set to turn on at 30 PSI and off at 50 PSI, you can adjust it to turn on at 40 PSI and off at 60 PSI, which raises the pressure throughout your house.

Before you adjust anything, write down the current settings. You will see two nuts on the switch — a larger one (usually controls the cut-in pressure, when the pump starts) and a smaller one (usually controls the differential, the gap between on and off). Turning the larger nut clockwise raises the cut-in pressure; turning it counterclockwise lowers it. Most switches have a range of about 20 PSI between on and off, so raising the cut-in pressure by 10 PSI will also raise the cut-off pressure by 10 PSI.

Make small adjustments — a quarter turn at a time — and let the pump cycle a few times before adjusting again. Do not raise pressure above 80 PSI; higher pressure stresses pipes, fixtures, and the pump itself and can cause leaks. If you are not comfortable working with the switch, a well service technician can adjust it in minutes.

Clear sediment from the pressure tank outlet

Over time, sediment from the well can settle inside the pressure tank and clog the outlet pipe. This restricts water flow and makes pressure feel low even though the pump is working normally. You will notice this especially if pressure is fine when you first turn on a faucet but drops quickly as you use more water.

Turn off the pump and drain the tank completely. Locate the outlet pipe — the one that carries water out of the tank toward your house — and look for a shutoff valve just below the tank. Close that valve, then open the drain valve on the bottom of the tank and let sediment drain out. You may need to let water run for several minutes; the outlet pipe may be clogged with fine sand or mineral buildup.

Once the tank is empty and drained, close the drain valve, reopen the outlet shutoff valve, and turn the pump back on. If pressure improves, sediment was the problem. If it does not, the issue is elsewhere in the system.

Listen for a failing pump motor

A pump that runs but does not build pressure usually has a motor that is wearing out or an internal impeller that has broken. You will often hear this — the pump may make a grinding noise, run continuously without shutting off, or cycle on and off rapidly even though the tank is full.

If the pump runs for more than a few minutes without the pressure gauge climbing, turn it off when ready and call a well service technician. Running a pump that cannot build pressure can damage it further and is a sign the motor or internal parts need replacement. This is not something you can fix yourself.

Before you call, check one more thing: make sure the breaker for the pump has not tripped. A tripped breaker can make it look like the pump is running when it is actually off. If the breaker is fine and the pump is truly running without building pressure, you need professional service.

Rule out downstream plumbing problems

If pressure is low only at one faucet or shower, the problem is not your well pump — it is in the plumbing between the tank and that fixture. Check whether other faucets in the house have normal pressure. If they do, the issue is a clogged aerator, a partially closed shutoff valve, or a failed check valve in that branch of plumbing.

Start by unscrewing the aerator (the screen at the tip of the faucet) and rinsing it under another faucet. Sediment often collects there and is straightforward to clear. If that does not help, check the shutoff valve under that sink or in the wall — it should be fully open (turned all the way counterclockwise). If the valve is partially closed or stuck, that is your culprit.

If pressure is low everywhere in the house, the problem is in the main line from the tank, and you should follow the steps above. If it is low only at one location, you have narrowed it down to that fixture or its supply line.

When to call a well service technician

You can handle adding air to the pressure tank and adjusting the pressure switch yourself if you are comfortable with basic tools. Everything else — replacing a failed tank, clearing deep sediment clogs, diagnosing a failing pump motor, or repairing the pump itself — requires a licensed well service technician.

A technician can also test your water for sediment and mineral content, which helps explain why pressure keeps dropping. They have tools to measure actual flow rate and can tell whether your pump is sized correctly for your household's water use. If you have had low pressure for months and your own adjustments have not fixed it, a service call will save you time and prevent damage to your system.

Frequently Asked Questions

Can I replace the pressure tank myself?

Replacing a pressure tank is possible for someone with plumbing experience, but it involves draining the system, disconnecting pipes, and ensuring proper air charge in the new tank. Most homeowners hire a technician for this work because mistakes can introduce air leaks or improper pressure settings that cause the problem to return.

What pressure should my well pump be set to?

Most household systems run between 40 and 60 PSI, with the pump turning on at 40 PSI and shutting off at 60 PSI. Some systems use 30/50 or 50/70 depending on the house size and water demand. Check your pump documentation or ask your well service technician what your system was originally set to.

Why does my pressure drop after I use water for a while?

This usually means the pressure tank bladder is failing and cannot hold air. As you use water, the air space shrinks and pressure drops. A working tank should maintain pressure for at least several hours after the pump shuts off; if it drops within minutes, the bladder needs replacement.

Is low water pressure a sign my well is running dry?

Low pressure is rarely caused by a dry well. A truly dry well produces no water at all — you get nothing from the faucet, not low pressure. Low pressure almost always points to a failed pressure tank, a clogged line, or a failing pump. A well service technician can test the well depth and water level if you are concerned.

Can I raise my pressure above 80 PSI?

You can, but you should not. Pressure above 80 PSI stresses pipes, fixtures, water heaters, and the pump itself. It increases the risk of leaks and shortens the life of your system. If you need more pressure for a specific use, talk to a technician about whether a booster pump is a better solution than raising the main system pressure.