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Why Is Your Water Pressure So Low? Five Possible Reasons

A close-up image of a person holding their hand under a bathroom faucet with weak water flow, indicating low water pressure. | Mr. Rooter® Plumbing of Yavapai, Coconino, and Maricopa Counties.

Keep Your Sinks and Showers Flowing With These Tips

Adequate water pressure is essential for everyday tasks like showering, doing laundry, and washing dishes. When water pressure dips, it can disrupt your routine and signal an underlying plumbing issue that needs attention. Low water pressure can stem from a variety of causes, ranging from minor clogs to significant system problems.

Understanding these causes can help you decide whether a quick fix will do or if it’s time to call the experts at Mr. Rooter® Plumbing of Yavapai, Coconino, and Maricopa Counties. We provide comprehensive plumbing services throughout Prescott, AZ, and surrounding areas.

Here are five common reasons why your water pressure might be low and what to do about them.

1. Clogged Pipes

Low water pressure is often caused by clogged pipes. Over time, mineral deposits, sediment, and debris can build up, narrowing pipes and restricting water flow. This is especially common in areas with hard water, where minerals like calcium and magnesium accumulate faster.

Signs of clogged pipes include slow water flow or inconsistent pressure, often noticeable in fixtures like your shower or sink. Professional pipe cleaning or descaling can usually fix the issue and restore normal pressure. If left untreated, clogs can worsen and lead to bigger plumbing problems.

2. Leaks in the Plumbing System

Even a small plumbing leak can have a big impact on your water pressure. When water escapes through a leak, it reduces the amount available to flow through your faucets and fixtures. Not only can this be frustrating, but leaks also waste water and can lead to higher utility bills and potential water damage if not addressed promptly.

To check for leaks, start with a visual inspection of your pipes and fixtures for any signs of dripping water or moisture. You can also perform a water meter test: turn off all water in your home and check your meter. If it continues to move, you likely have a leak somewhere in the system. If you suspect a leak, don’t wait—call a professional to locate and repair it before it causes further damage.

3. Municipal Water Supply Issues

Sometimes, the problem isn’t within your home’s plumbing but with the municipal water supply. If your neighbors are also experiencing low water pressure, it’s worth contacting your local water provider to see if maintenance or an outage is to blame. Scheduled repairs, pipe bursts, or other city-related issues can temporarily affect water pressure in your area.

If municipal water pressure is consistently low, you may want to consider installing a water pressure booster. These devices can help maintain steady water pressure in your home, even if the supply from the city isn’t ideal. However, it’s important to confirm the issue is with the municipal supply before investing in a booster.

4. Faulty Pressure Regulator

A pressure regulator is a device that controls the water pressure entering your home, ensuring it stays within a safe and functional range. If this device malfunctions, it can cause sudden drops in water pressure or uneven water flow throughout your home.

Signs of a faulty pressure regulator include inconsistent water pressure or a dramatic change in pressure that happens suddenly. Testing or replacing a pressure regulator is not a DIY job—it’s best left to a licensed plumber. A professional can diagnose the issue and install a new regulator if needed, restoring proper water pressure to your home.

5. Corroded or Aging Pipes

If your home has older galvanized steel pipes, corrosion could be the root cause of your low water pressure. Over time, these pipes can rust and deteriorate, significantly restricting water flow. This issue is more common in homes built decades ago, as modern plumbing materials like copper and PEX are more resistant to corrosion.

Warning signs of corroded pipes include discolored or rusty water, frequent leaks, and persistent low pressure. In many cases, repiping your home is the best long-term solution. While it’s a more involved repair, replacing old pipes with updated materials will not only improve water pressure but also prevent future plumbing problems.

Call Our Prescott Plumbers for Assistance

Low water pressure is more than just an inconvenience—it’s often a sign of a larger plumbing issue. From clogged pipes to aging systems, identifying the root cause is key to restoring optimal water flow in your home.

While some minor issues can be diagnosed on your own, persistent low water pressure often requires professional attention. At Mr. Rooter Plumbing of Yavapai, Coconino, and Maricopa Counties, our team specializes in diagnosing and repairing various plumbing issues. Whether it’s a simple repair or a complete repiping project, we’re here to help.

Request a job estimate today!

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Since the original Mr. Rooter was founded in 1970, the company has remained committed to a set of core values that are rooted in performing quality work at honest prices. Nearly half a century later, the original Mr. Rooter business is still servicing homes and businesses in and around Oklahoma City. It’s still independently owned and operated with strong ties to the community that made it all possible.

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Let Us Call You

By checking this box, I agree to opt in to receive automated SMS and/or MMS messages from Mr. Rooter Plumbing, a Neighborly company and its franchisees to the provided mobile number(s). Message & data rates may apply. Message frequency varies. View Terms and Privacy Policy. Reply STOP to opt out of future messages. Reply HELP for help.

By entering your email address, you agree to receive emails about services, updates or promotions, and you agree to the Terms and Privacy Policy. You may unsubscribe at any time.