Causes of Low Water Pressure

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Are you experiencing low water pressure or flow in your home? There are several different causes of low pressure, some that are easily remedied. The first step is to determine where and what is causing the reduction in water flow. Here are some tips to find the problem and how it can be fixed.

Isolated Low Water Pressure Problems

Are all your faucets experiencing low water pressure? If it is only in your bathroom or kitchen, it may be an isolated issue. For example, if only one faucet has low pressure, the supply valve for that faucet may not be completely open. Showers that trickle water may be due to a clogged showerhead, not related to the actual plumbing.

Whole Home Low Water Pressure

If you have low water pressure throughout your home, there are a couple possible causes. If you are on a municipal water supply, it could be low pressure from the main source. Using a hose bib water gauge can help you determine your base water pressure. If it is above 40 PSI, your base water pressure is stable; if it is lower, contact your municipal water supplier as there may be a problem with the supply.

If your base pressure is fine, the problem must be in your home. The most common causes within the home for low water pressure include:

  • Failed pressure release valve
  • Partially closed main water valve
  • Corroded internal pipes

While you can check the main water valve to ensure it is open completely, a failed pressure release valve or corroded pipes may require the professional assistance of a plumber. They can further evaluate the issue and offer solutions to resolve the problem.

Posted on behalf of:
Bynum & Sons Plumbing, Inc.
2120 McDaniels Bridge Rd SW
Lilburn, GA 30047
(770) 736-8283

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