Why Is the Water Pressure in My House So Low? Causes, Fixes, and When to Call a Plumber

A cat watching the water drip from the faucet of the kitchen sink

If you’ve noticed low water pressure in your home, it can be frustrating! Whether it’s your shower, faucets, or washing machine not performing as expected, it’s important to figure out the cause. In this blog, we’ll explore common reasons for low water pressure, how you might be able to fix it yourself, and when it’s time to call Aqua Knight Plumbing for expert help.

1. Clogged Pipes

Over time, minerals like calcium and sediment can build up inside your pipes, restricting water flow and causing low pressure. If only one fixture is affected, the clog is likely local to that pipe.

Fix: Try using a cleaning solution designed to break down mineral deposits, or remove and clean the affected faucet’s aerator. If multiple areas of the house are impacted, it may be time to call a plumber to assess the situation.

2. Leaky Pipes

A hidden leak somewhere in your plumbing system could be causing low water pressure. If water is escaping from a pipe, it means less is making its way to your taps.

Fix: Look for signs of water damage, such as damp spots on walls, ceilings, or floors. If you suspect a leak, call Aqua Knight Plumbing to locate and repair it before it turns into a bigger issue.

3. Main Water Valve Issues

Your home’s main water valve controls the water flow from the main line into your home. If the valve isn’t fully open, it can reduce water pressure throughout the house.

Fix: Locate your main water valve, usually found near where the water supply enters the home. Make sure it’s fully open by turning it counterclockwise. If this doesn’t resolve the problem, a professional inspection may be needed.

4. Faulty Pressure Regulator

Some homes have a pressure regulator installed to control the water pressure from the municipal supply. If the regulator fails, it can cause either very low or very high water pressure.

Fix: You can test the pressure with a gauge, but fixing or replacing a pressure regulator should be left to a professional plumber to avoid damage to your system.

5. Municipal Water Supply Problems

Sometimes the issue isn’t within your home at all. Problems with your municipal water supply, such as ongoing maintenance or issues at the water plant, can temporarily cause lower water pressure.

Fix: Check with your neighbors to see if they’re experiencing similar issues. If so, contact your local water utility. If it’s just your home, the problem may lie within your plumbing system.

6. Corroded Pipes

Older homes with steel or galvanized pipes can experience corrosion over time, leading to reduced water flow. Corroded pipes don’t just reduce water pressure—they can also lead to leaks and water damage.

Fix: Unfortunately, pipe corrosion requires professional pipe replacement. If your home has old, corroded pipes, Aqua Knight Plumbing can recommend the best course of action for replacing them with more durable materials like copper or PEX.

7. Water Heater Problems

If you’re only noticing low water pressure when using hot water, your water heater could be the culprit. Sediment buildup inside the heater can restrict the flow of water, reducing pressure at the tap.

Fix: Regularly flushing your water heater can help prevent sediment buildup. If you’re not comfortable doing this yourself, call a plumber to handle it.


When to Call Aqua Knight Plumbing

While some water pressure issues can be fixed with simple DIY solutions, others require the expertise of a professional. If you’re experiencing widespread low water pressure, suspect a leak, or need help diagnosing the problem, Aqua Knight Plumbing is here to help.

We recommend calling a plumber if:

  • You notice low pressure throughout the entire house
  • You suspect a leak but can’t locate it
  • Your water pressure regulator needs to be replaced
  • Your home has old or corroded pipes
  • You’ve tried DIY fixes without success

With over [years of experience], Aqua Knight Plumbing can quickly identify and fix any water pressure issue, ensuring your home’s plumbing system runs smoothly.


Need a Hand? Contact Aqua Knight Plumbing at 630-755-0583 Today!
Low water pressure can be more than just an annoyance—it can be a sign of bigger plumbing problems. Don’t let a small issue turn into a major headache. Give us a call, and we’ll have your water flowing strong again in no time!

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