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What Causes Low Water Pressure in Hove Homes?

Friday, 1 May

If you’ve ever turned on the tap expecting a steady flow and instead got a sluggish trickle, you’ll know how frustrating low water pressure can be. It makes showers underwhelming, filling the kettle feel like a chore and can even affect how well your boiler performs. As any experienced plumber in Hove will tell you, low pressure is one of the most common complaints we hear from homeowners and tenants across the area.

In places like Hove, Brighton and Southwick, there are a few recurring causes we see time and time again. Some are easy fixes you can sort yourself. Others need a proper look by a qualified engineer. Here’s what might be going on in your home and what to do next.

Why water pressure issues matter in your home

Low water pressure is more than just an annoyance. It can point to underlying plumbing problems and in some cases it can damage appliances if left unchecked.

Combi boilers, for example, rely on good incoming mains pressure to work efficiently. If the flow is too weak, you may notice fluctuating hot water temperatures or radiators not heating properly. Tenants often assume it’s a boiler fault when actually the issue starts with the supply.

Over time, persistent pressure problems can also highlight leaks, blockages or ageing pipework. In older Hove properties, especially Victorian terraces near the seafront, original pipework can still be in place. That can restrict flow far more than most people realise.

Common causes of low water pressure and how to identify them

Partially closed stopcock

This might sound obvious but we’ve been to plenty of homes where the internal stopcock wasn’t fully open. If you’ve recently had plumbing work done or you’ve just moved in, this is always worth checking first.

You’ll usually find it under the kitchen sink or where the mains pipe enters the property. Turn it slowly anticlockwise to ensure it’s fully open.

Issues with the mains supply

Sometimes the problem is outside your home. Burst mains, repair work or high demand during peak hours can all affect pressure temporarily. We see this occasionally in parts of Brighton during busy summer weekends.

If your neighbours are experiencing the same issue, it’s likely a supply problem rather than something internal.

Leaks in the system

A hidden leak can significantly reduce water pressure. If you’ve noticed damp patches, mould, or your water bill creeping up without explanation, a leak may be the cause.

One simple check is to turn off all taps and water-using appliances then look at your water meter. If it’s still moving, there could be a leak somewhere. If you suspect something more serious, especially if water is escaping quickly, it’s worth reading this advice on handling a sudden leak emergency in Hove.

Blocked or corroded pipework

Older metal pipes can corrode internally over time, narrowing the space water can flow through. In hard water areas, limescale build-up inside pipes and fittings can also restrict pressure.

This is particularly common in older flats in central Hove where pipework hasn’t been updated for years. If pressure has gradually worsened rather than suddenly dropped, corrosion or scale may be to blame.

Faulty pressure reducing valve

Some homes have a pressure reducing valve fitted to control high mains pressure. If this valve fails or sticks, it can leave you with disappointing flow throughout the house.

This isn’t usually a DIY fix as it involves working directly on the mains supply.

Problems with the boiler or heating system

If the issue is only affecting your hot water, it may be linked to the boiler rather than the incoming mains. A blocked plate heat exchanger in a combi boiler, for example, can reduce hot water flow while cold taps seem fine.

In this case, the pressure gauge on the boiler may also show low system pressure. That’s a separate issue from mains pressure and needs checking properly.

Simple checks and fixes you can try yourself

Before calling an engineer, there are a few practical things you can look at.

Check that the stopcock is fully open
Clean tap aerators and shower heads as these can clog with limescale
Test whether the issue affects all taps or just one
Ask neighbours if they’re experiencing the same problem
Look for visible leaks under sinks and around appliances

If it’s just one tap running slowly, unscrewing and cleaning the aerator often makes a big difference. We’ve had customers convinced they needed major pipework changes when it turned out to be a heavily scaled shower head.

However, if the whole property is affected and the problem persists, it’s time to take it more seriously.

When to call a professional plumber or heating engineer

You should contact a professional if:

The pressure drop is sudden and severe
You suspect a hidden leak
Your boiler pressure keeps dropping
Multiple properties in a converted building are affected
You’re unsure about adjusting valves on the mains

In flats around Hove and Southwick, we often find shared supply pipe issues where one property’s plumbing change has unintentionally affected another. These situations need careful diagnosis to avoid making things worse.

If you’re based in neighbouring areas, help is close by whether you need a plumber in Brighton or a plumber in Southwick. Getting someone local means faster response times and engineers who understand the quirks of the area’s housing stock.

Low water pressure rarely fixes itself. The sooner it’s checked, the easier and often cheaper it is to sort.

At Glow Zone, we regularly help homeowners and tenants across Hove diagnose and resolve water pressure issues properly, whether that’s tracking down hidden leaks, upgrading ageing pipework or resolving boiler-related flow problems.