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Common Causes of Low Water Pressure

Thousands of homeowners suffer from lower water pressure, simply because they don't know what the cause is. If you can't take a shower and water your lawn at the same time, now's the time to improve your water pressure and contact the professional plumbing contractors at BEST. A few quick tricks could be all that stands in your way of increased water flow.

Let's Look at Typical Water Pressure Problems

The London, Ontario plumbing contractors at BEST recognize the following problems as the potential cause for many low pressure water problems:

  • valves
  • water leaks
  • mineral deposits
  • faulty hardware

Main water Valves

Valves can sometimes get turned off by accident inside your home. If you're not sure where to find your main water valves, the London, Ontario plumbers at BEST recommend looking for your water meter and to check the main valve first. Even the slightest turn from the "on" position can cause a significant decrease in your water flow.

Water Leaks

Leaks are the #1 cause of water pressure problems. Luckily, most leaks can easily be repaired. If you think a leak is responsible for your water pressure problem, the plumbing repair contractors at BEST recommend implementing the following test:


Turn off all of the water taps inside and outside the home. Check your metre immediately after doing this. Wait for two hours and return to your metre. Has the reading changed? If so, it's time to contact a professional plumbing service to help locate the problem.

Mineral Deposits

Mineral deposits are a common problem in older homes, especially those with galvanized iron pipes. Deposits are normally located in horizontal pipes and are caused by hot water reacting with the galvanized metal. If you believe this might be what's causing your plumbing issue, don't try and fix it yourself. It's best to bring in a reputable, certified plumbing service to thoroughly inspect the issue.

Faulty Hardware

If your water pressure is only low in the shower, it could be because your shower head has bit the dust. Most shower heads have a screen inside of them that can become clogged by mineral deposits reducing water flow. To fix this, simply remove the shower head and then remove the screen. Use an old toothbrush to scrub out the minerals (there are also chemical cleaners available for this purpose).

If low water pressure is causing problems in your household, don't just live with it. Most low water pressure issues can be fixed with the help of a professional plumber of plumbing service. For help diagnosing your water pressure problem, simply contact BEST by phone at 519.438.6565. We have a certified plumber on-call 24 hours a day, seven days a week.


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At BEST Plumbing and Drainage Contractors, we feel it's important to help homeowners understand the role of the contractor and the various construction solutions available for each unique plumbing, wet basement repair and drainage issue. We are more than happy to consult with you and help navigate the process.

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