Low Water Pressure in Your New Bern Home? 7 Possible Causes

Low water pressure can make everyday tasks frustrating. Your shower feels weak, the washing machine takes longer to fill, and the kitchen faucet may barely produce enough water to rinse the dishes.

Sometimes the cause is something simple, such as a clogged faucet aerator. In other cases, low water pressure can be a warning sign of a hidden leak, failing pressure-reducing valve, corroded pipes, or a problem with the main water line.

If the water pressure in your New Bern home has suddenly dropped or gradually gotten worse, here are seven possible causes to consider.

1. A Clogged Faucet Aerator or Showerhead

When low water pressure affects only one faucet or shower, the problem may be limited to that fixture.

Mineral deposits, sediment, and debris can build up inside faucet aerators and showerheads. This buildup restricts the amount of water that can pass through, making the flow feel weak.

You can remove the aerator or showerhead and clean it carefully. If the water flow improves afterward, the fixture was likely the source of the problem.

If multiple fixtures throughout the home have low pressure, the cause is probably somewhere else in the plumbing system.

2. A Partially Closed Shutoff Valve

Your home has a main water shutoff valve that controls the water entering the property. Individual sinks, toilets, and appliances may also have smaller shutoff valves.

If a valve was not fully reopened after a plumbing repair, inspection, or renovation, it may restrict water flow.

Check accessible valves to make sure they are fully open. However, do not force a valve that is corroded, stuck, or difficult to turn. Older valves can break or begin leaking when handled.

3. A Failing Pressure-Reducing Valve

Some homes have a pressure-reducing valve, also known as a PRV, that regulates the pressure of the water entering the plumbing system.

When a PRV begins to fail, the water pressure may become too low, too high, or inconsistent.

Signs of a possible PRV problem include:

• Weak water pressure throughout the home

• Pressure that changes suddenly

• Banging or noisy pipes

• Fixtures behaving differently at different times

• Water pressure that is too strong in some areas and too weak in others

A plumber can test the incoming water pressure and inspect the PRV to determine whether it needs to be adjusted or replaced.

4. A Hidden Water Leak

Low water pressure can be a sign that water is escaping somewhere in the plumbing system before it reaches your fixtures.

A leak may occur behind a wall, beneath the floor, inside a crawlspace, under the house, in the yard, or along the main water line.

Warning signs of a hidden leak may include:

• An unexplained increase in your water bill

• Damp areas around sinks, toilets, or appliances

• Water stains on walls or ceilings

• Musty odors

• Wet or unusually green areas in the yard

• The sound of running water when all fixtures are turned off

• Movement on the water meter when no water is being used
  

A hidden leak should be investigated quickly. Delaying repairs may lead to water damage, mold growth, higher utility bills, and more expensive plumbing problems.

5. Corrosion or Buildup Inside Older Pipes

New Bern has many older homes, and some may still contain aging plumbing materials.

Galvanized steel pipes can corrode from the inside over time. Rust, mineral buildup, and sediment gradually narrow the opening inside the pipe, reducing the amount of water that can pass through.

The outside of the pipe may look normal even when the inside is heavily restricted.

This problem often develops slowly. You may notice that the water pressure has gradually worsened or that the pressure drops significantly when more than one fixture is being used.

Cleaning a faucet will not fix corrosion inside the plumbing system. Depending on the condition of the pipes, targeted repairs or repiping may be necessary.

6. A Problem With the Main Water-Service Line

The main water-service line carries water from the public water supply to your home.

If this line is leaking, damaged, crushed, restricted, or affected by tree roots, water pressure may decrease throughout the entire property.

Possible warning signs include:

• Low pressure at every fixture

• A sudden drop in water pressure

• Wet areas between the house and the water meter

• Unexplained water usage

• Discolored water

• Pressure that continues to get worse
  

Because the water-service line is usually underground, diagnosing the problem may require professional testing and leak-detection equipment.

7. High Water Demand or a Municipal Water Issue

Your water pressure may temporarily drop when several fixtures and appliances are running at the same time.

For example, using the shower, washing machine, dishwasher, and outdoor hose simultaneously may reduce water flow, especially in a home with older or undersized plumbing.

The issue may also be outside your property. Work on the public water system, a nearby water-main problem, or increased demand in the area can temporarily affect pressure.

Ask a neighbor whether they are experiencing the same issue. If several nearby homes have low pressure, the problem may involve the municipal water system.

If only your home is affected, the cause is more likely inside your plumbing system or along your water-service line.

Is It Low Water Pressure or Low Water Flow?

Water pressure and water flow are related, but they are not the same thing.

Water pressure is the force that pushes water through your plumbing system.

Water flow is the amount of water coming through a fixture during a certain period of time.

A clogged faucet aerator may reduce the flow from one fixture even when the home’s overall water pressure is normal.

A failing PRV, leaking water line, or restriction inside the plumbing system may affect both pressure and flow throughout the home.

Proper testing helps identify the actual cause before repairs begin.

What Can You Check Before Calling a Plumber?

Before calling a plumber, you can perform a few basic checks:

• Determine whether the problem affects one fixture or the entire home

• Clean the affected faucet aerator or showerhead

• Make sure accessible shutoff valves are fully open

• Check whether multiple appliances are running at the same time

• Look for visible leaks, wet areas, or water stains

• Check your water bill for unexplained increases

• Ask neighbors whether their water pressure has also changed
  

Avoid adjusting the pressure regulator or forcing old valves unless you are familiar with the plumbing system. The wrong adjustment can create excessive pressure, damage fixtures, or cause a leak.

When Should You Call a Plumber?

You should contact a plumber when:

• Water pressure is low throughout the home

• The pressure dropped suddenly

• Cleaning the fixture did not solve the problem

• You suspect a hidden leak

• Your water bill increased unexpectedly

• Your home has older or corroded pipes

• The pressure changes dramatically

• You hear banging, whistling, or running water

• The main shutoff valve appears damaged

• There are wet areas in the yard

• The pressure-reducing valve may be failing
  

A professional water-pressure diagnosis can help determine whether the problem is caused by a fixture, valve, leak, pipe restriction, service line, or another part of the plumbing system.

Low Water Pressure Help in New Bern, North Carolina

Low water pressure is more than an inconvenience. It can be an early warning that part of your plumbing system needs attention.

Colonial Capital Plumbing & Septic provides water-pressure diagnosis, pressure-reducing valve replacement, leak detection, pipe repair, repiping, and other plumbing services throughout New Bern and surrounding Eastern North Carolina communities.

Need a plumber?

Call Colonial Capital Plumbing & Septic at 252-635-1710 to schedule service.

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Frequently Asked Questions

Why is my water pressure suddenly low?

A sudden drop in water pressure may be caused by a partially closed valve, failing pressure regulator, active leak, damaged water-service line, or temporary issue with the public water supply.

Why is the water pressure low in only one faucet?

When only one faucet is affected, the most likely causes are a clogged aerator, blocked faucet cartridge, partially closed shutoff valve, or problem inside the fixture.

Can a water leak cause low pressure?

Yes. A significant leak can divert water before it reaches your fixtures, reducing pressure while also increasing water usage and the risk of property damage.

Can old pipes reduce water pressure?

Yes. Corrosion and mineral buildup can narrow the inside of older pipes and restrict water flow. This is especially common in aging galvanized plumbing.

Can a plumber increase my water pressure?

A plumber can test the pressure and determine why it is low. The solution may involve cleaning or repairing a fixture, opening or replacing a valve, replacing a pressure regulator, repairing a leak, replacing restricted pipes, or repairing the main water-service line.

This article is intended for general educational purposes. Every plumbing system is different, and the appropriate repair depends on the condition of the property.