Why Your Water Pressure Is Dropping: The Top Causes and How to Fix It

16 December 2025

Low water pressure is one of the most frustrating issues a homeowner can face. Whether it’s a weak shower, slow-filling appliances or taps that never seem to deliver a steady flow, reduced pressure can disrupt daily routines and signal a deeper problem within your water supply system.

For many Coventry homeowners, water pressure issues don’t happen overnight. They often develop gradually, making them easy to ignore—until the problem becomes impossible to live with. At MJY Utilities, we regularly help customers diagnose and resolve pressure issues caused by leaks, failing water mains and outdated pipework.

In this blog, we’ll explain the most common reasons your water pressure may be dropping, how to spot the warning signs early, and what solutions are available to restore strong, reliable flow to your home.

What Is Considered Low Water Pressure?

Water pressure refers to the force that pushes water through your pipes and out of your taps. When pressure drops, the amount of water reaching your fixtures is reduced, even if the supply itself hasn’t stopped.

Common signs of low water pressure include:

Weak showers
Taps taking longer to fill sinks or baths
Appliances such as washing machines filling slowly
Inconsistent flow when multiple taps are used
Sudden drops in pressure with no clear cause

If these problems persist, it’s important to investigate sooner rather than later.

The Most Common Causes of Dropping Water Pressure

1. Hidden Leaks in the Water Supply Pipe

One of the most common causes of low water pressure is a hidden leak in the underground supply pipe. When water escapes before it reaches your property, pressure drops throughout the system.

Leaks can occur due to aging pipes, ground movement, corrosion or root intrusion. Because supply pipes are buried, these leaks often go unnoticed until pressure problems or increased water bills appear.

Professional leak detection can locate these issues accurately without unnecessary digging.

2. Aging or Deteriorated Water Mains

Older properties in Coventry often rely on outdated supply pipes made from materials that degrade over time. As pipes narrow internally due to corrosion or mineral build-up, water flow becomes restricted, leading to reduced pressure.

In some cases, the pipe may be partially collapsed, cracked or poorly joined—especially if it has been repaired multiple times in the past.

Upgrading to a modern pipe through repair or replacement can dramatically improve pressure and reliability.

3. Lead or Steel Supply Pipes

Many homes still have lead or galvanised steel water supply pipes. These materials are prone to internal corrosion, scaling and flow restriction.

As the internal diameter of the pipe reduces, pressure drops—sometimes significantly. Even if there are no visible leaks, the pipe itself may be limiting the amount of water that can pass through.

Replacing these pipes with modern materials not only improves pressure but also future-proofs your water supply.

4. Shared Supply Pipes

Some properties share a water supply pipe with neighbouring homes, particularly in older housing developments. When multiple properties use water at the same time, pressure can drop noticeably.

This is especially common during peak usage times such as mornings and evenings. A dedicated supply pipe eliminates this issue entirely and provides consistent pressure throughout the day.

5. Ground Movement or External Damage

Seasonal changes, temperature fluctuations, construction work or nearby traffic can all cause ground movement. Even small shifts in the soil can place strain on underground pipes, leading to cracks, misalignment or partial blockages.

These issues often worsen over time, gradually reducing pressure until the pipe fails completely.

6. Internal Plumbing Issues

While many pressure problems originate outside the property, internal plumbing should not be overlooked. Faulty valves, clogged pipework or poorly installed systems can also restrict flow.

A professional assessment helps determine whether the issue lies within the home or the external supply pipe.

How to Tell If the Problem Is Internal or External

A simple way to narrow down the issue is to check whether all taps are affected. If pressure is low throughout the entire property, the issue is likely with the supply pipe or water main.

If only one fixture is affected, the problem may be localised to internal plumbing. However, persistent low pressure across multiple outlets usually indicates a supply-side issue that requires professional attention.

How Professional Leak Detection Helps Restore Pressure

Modern leak detection techniques allow engineers to locate pressure-reducing leaks quickly and accurately. At MJY Utilities, we use non-invasive methods that minimise disruption while delivering precise results.

By identifying the exact location of a leak, repairs can be targeted and efficient—restoring pressure without unnecessary excavation.

Early detection also prevents further deterioration of the pipe, saving homeowners from more costly repairs later on.

When Water Main Repair or Replacement Is the Best Solution

In cases where pipes are heavily damaged, corroded or outdated, repairing isolated sections may only provide a temporary fix. If pressure issues are ongoing, a full water main replacement may be the most effective long-term solution.

One increasingly popular option is no-dig water main replacement, which allows a new pipe to be installed with minimal disruption to the property. This approach avoids trenches, protects driveways and gardens, and is often completed within a single day.

Replacing an old supply pipe can result in:

Immediate pressure improvement
Fewer leaks and future issues
Improved reliability
Reduced risk of emergency call-outs

Why Ignoring Low Water Pressure Is a Costly Mistake

Low pressure is rarely just an inconvenience—it’s often a symptom of a developing problem. Ignoring it can lead to:

Complete pipe failure
Burst pipes during cold weather
Water damage to property foundations
Higher water bills
Emergency repairs with higher costs

Addressing the issue early gives you more control over the repair process and avoids unnecessary stress.

Why Coventry Homeowners Choose MJY Utilities

At MJY Utilities, we specialise in diagnosing and resolving water pressure issues quickly and efficiently. Our experience with leak detection, water main repairs and trenchless replacement means we can offer tailored solutions for every property.

Homeowners trust us because we provide:

Honest advice and clear explanations
Accurate, non-invasive diagnostics
Modern repair and replacement techniques
Minimal disruption to homes and gardens
Reliable, professional workmanship

We focus on fixing the root cause—not just the symptom.

Restore Your Water Pressure with Confidence

If your water pressure has dropped or become unreliable, it’s important not to ignore the signs. Whether the issue is a hidden leak, aging pipework or a failing water main, early action can save time, money and hassle.

MJY Utilities is here to help restore strong, consistent water pressure to homes across Coventry. Get in touch today to arrange an assessment and take the first step toward a smoother, more reliable water supply.

Enquire with us now