Low Water Pressure on Well Water: 7 Common Causes (And What Actually Fixes Them)

Low water pressure is one of the most frustrating problems homeowners with private wells can experience. You turn on the shower, and instead of a strong, steady stream, you get a weak trickle. The same problem may affect faucets, toilets, washing machines, and outdoor spigots.

When your well water has low water pressure, the issue may be due to a variety of sources, such as the well, pressure tank, plumbing system, or well pump. Luckily, there are numerous reasons that can be diagnosed and corrected without changing the whole system.

The following are 7 typical reasons why well water pressure is low- and what actually corrects each.

Clogged or Dirty Well Filter

A well water filtration system is used to eliminate sediment, sand, iron and other particles before water flows into the plumbing of your home. The filter might become clogged over time, limiting the flow of water and resulting in a significant loss of pressure.

What fixes it: Check the filter housing and replace or clean the filter according to the manufacturer's instructions. If the filter becomes clogged repeatedly, have the water system inspected. Excessive sediment may indicate a problem with the well or filtration setup.

Problems With the Pressure Tank

The well pressure tank contributes significantly towards the constant water pressure. It keeps pressurized water; thus, the pump does not have to operate every time you turn on a faucet.

Pressure fluctuations and low water flow may be caused by a damaged tank bladder, improper air pressure or a waterlogged tank. You might also observe that the pump is switched on and off more often than usual.

What fixes it: A professional may check the air pressure in the tank and examine the bladder or diaphragm. In case the tank is waterlogged or damaged, pressure can be adjusted or the tank changed to ensure a normal water pressure.

A Failing or Undersized Well Pump

A well pump is in charge of pumping water out of the well into the plumbing of your house. When the pump is either old or damaged or of the wrong size, it might not generate sufficient water pressure.

Symptoms of a failed pump may include a slowly lowering pressure, slow recovery following a heavy water usage, or pressure that deteriorates when several fixtures are operating.

What fixes it: A well professional ought to check on the performance, flow rate and electrical parts of the pump. In case of a pump failure, it can be repaired or replaced.

If your water pressure has slowly declined over months or years, don't automatically increase the pressure switch setting. The pump can just fail to provide the necessary flow.

A Faulty Pressure Switch

The pump is activated by the well pressure switch to switch on and off. The majority of residential well systems are preset with a range of pressures. When the switch is faulty, dirty or not adjusted properly, the pump will not be able to run at the correct pressure.

As an example, a system that is programmed to run between 40/60 PSI can be set to turn on at 40 PSI and turn off at 60 PSI. When the switch is faulty, the system might not be able to achieve the desired pressure.

What fixes it: Have the pressure switch checked and tested. A technician is able to know whether the switch requires well cleaning, adjustment or replacement.

Clogged Pipes or Plumbing Restrictions

This issue can only impact some fixtures. As an example, when the kitchen faucet is low pressure and the shower and outdoor spigot are functioning normally, the problem can be localized to that particular faucet or its supply line.

What fixes it: Begin by examining faucet aerators, showerheads, shutoff valves, and available plumbing connections. When several fixtures are low-pressured, a plumber might have to examine the supply lines of the house to determine whether they have a mineral buildup, corrosion, or other limiting factors.

It might be more effective to replace severely restricted plumbing than attempt to raise the pressure of the well system.

Low Water Level or Well Yield Problems

A low recovery rate well can deliver sufficient water at normal conditions but fail when multiple fixtures are operated simultaneously. You may find that the pressure decreases when you take long showers, wash clothes, or when there is a lot of water use.

What fixes it: A professional can check the level of water in the well, the rate of recovery and the general yield. Depending on the cause, the solution could be a change in water usage, fixing the well, changing the pump arrangement, or even looking into other water storage.

Do not think that the solution to the problem is to install a larger pump. When the well itself is not sufficient to supply sufficient water, a larger pump may only aggravate the situation by sinking the well at an increased rate.

Leaks in the Well or Home Plumbing System

A good alarm indicator is a well pump that operates when no faucets, appliances, or fixtures are running water. This may be a sign of leakage in the system.

What fixes it: Turn off all water fixtures and see whether the pressure varies or the pump is still on. Inspect visible pipes, faucets, toilets, and connections for leaks. Should the issue seem to be underground or hard to find, a plumber or well technician may conduct additional testing.

Repairing the leak can restore pressure while also preventing unnecessary pump operation and water waste.

How to Fix Low Water Pressure on Well Water

When the whole house experiences low water pressure, then the issue is more likely to be with the pressure tank, pressure switch, well pump, well yield, or main plumbing line. When only a single fixture is low pressure, then it is more likely that the problem is a clogged aerator, valve, or localized pipe restriction.

Avoid simply increasing the pressure switch setting without determining the cause. Higher pressure settings can put additional strain on the pump, tank, and plumbing system.

If you're unsure what is causing the problem, a qualified well contractor can test the system and identify whether the issue is with the well, pump, pressure tank, or household plumbing.