Low water pressure is frustrating. Your shower turns into a gentle drizzle, the bath takes half an hour to fill, and the kitchen tap barely manages a trickle when you’re trying to wash up. Before you call anyone out, there are a few things worth checking yourself.
What counts as low water pressure
Normal mains pressure in the UK sits around 1 bar, which equates to about 10 metres of head. Below that, you’ll start to notice problems. Northumbrian Water serves Teesside and they guarantee a minimum pressure at the boundary of your property. If the pressure at your taps is consistently weak, something between the boundary and your fixtures is restricting flow.
It’s worth noting that some drop in pressure during peak times (early mornings, early evenings) is normal. When everyone on your street is running taps and showers at the same time, demand on the mains increases. If the problem is constant or severe, though, it needs investigating.
Check these things first
Before calling a plumber, try these quick checks:
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Stopcock: Find your internal stopcock (usually under the kitchen sink or in a downstairs cupboard) and make sure it’s fully open. A partially closed stopcock is a surprisingly common cause of low pressure. Turn it anticlockwise as far as it will go.
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One tap or all taps? If the problem is just one tap, the issue is localised. It could be a blocked aerator (the little mesh at the end of the spout), a kinked pipe under the sink, or a faulty valve. If it’s all taps and the shower, you’re looking at a supply issue.
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Time of day: If pressure drops noticeably in the morning or early evening, it’s likely a supply-side issue caused by peak demand. Still worth logging with Northumbrian Water if it’s severe.
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Neighbours: Ask if they’re experiencing the same thing. If multiple houses on your street are affected, it’s almost certainly a mains problem. Contact Northumbrian Water to report it.
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Frozen pipes: In winter, frozen pipes can reduce or stop flow entirely. If the problem appeared suddenly during cold weather, this is the likely culprit.
Common causes in Teesside homes
Teesside is a hard water area, and that has consequences for your plumbing. Over time, limescale builds up inside pipes and fittings, gradually narrowing them and reducing flow. This is especially noticeable in older properties where pipework hasn’t been replaced in decades.
Old pipework is another common issue. Many Teesside homes, particularly Victorian terraces and 1930s semis, still have original lead or galvanised steel pipes. These corrode internally, narrowing the bore and dropping pressure. If your house is pre-1970s and you’ve never had the plumbing updated, this is worth investigating.
Leaks don’t always make themselves obvious. A small leak in the supply pipe between the boundary and your house can drop pressure without leaving visible water damage. You might not see a puddle or damp patch, but the pressure drop is noticeable at the taps. A plumber can run a pressure test to confirm whether this is the case.
Some properties have a pressure reducing valve fitted, usually near the stopcock or where the mains enters the house. If this valve fails or gets set incorrectly, it can choke supply. It’s not common in domestic properties, but worth checking if you know you have one.
In older streets, shared supply pipes can cause problems. Some Teesside properties share a single supply pipe that splits at or near the boundary. If multiple households draw water at the same time, pressure drops. This is more common in older terraced streets where the infrastructure hasn’t been updated.
What a plumber can do
If you’ve checked the basics and the problem persists, a plumber can investigate properly. That usually starts with a pressure test at the stopcock to confirm whether the problem is on your side of the boundary or the water company’s side.
If the problem is internal, the plumber will trace the supply pipework, looking for leaks, corrosion, or blockages. In hard water areas, descaling work can sometimes restore flow without replacing pipework, but if the pipes are corroded or heavily scaled, replacement is often the better option.
If low pressure is affecting your shower or taps throughout the house, a pressure booster pump might be an option. These pumps sit on your supply line and mechanically increase pressure. They’re not a fix for leaks or corroded pipes, but they can help in situations where mains pressure is borderline or where demand exceeds supply.
For more serious issues, like replacing the supply pipe between the boundary and your house, you’re looking at more involved work. This usually means digging up part of your drive or front garden to access the pipe. It’s not cheap, but it solves the problem permanently.
Costs
Investigating low pressure typically costs £60–£100 for a callout and diagnosis. The plumber will identify the cause and give you a quote for the fix.
Repairs vary depending on what’s found:
- Replacing a section of corroded pipe: £150–£400, depending on location and access.
- Fitting a pressure booster pump: £300–£600, including the unit and installation.
- Replacing the supply pipe: £500–£1,500+, depending on the length of the run and whether you need to dig up a drive.
If the problem is with the mains supply or the shared pipe up to your property boundary, that’s Northumbrian Water’s responsibility, not yours. No cost to you in that case.
When to contact your water company
If you’ve ruled out internal issues (stopcock open, no localised blockages, all taps affected) and your neighbours are experiencing the same problem, contact Northumbrian Water. They’re responsible for the mains supply up to your property boundary.
You can report low pressure on their website or by phone. They’ll usually send someone out to test pressure at the boundary. If the problem is on their side, they’ll fix it at no cost to you.
If the issue is a shared supply pipe that serves multiple properties, that’s a grey area. The pipe up to the boundary is usually the water company’s responsibility, but if the shared section is beyond the boundary and serves private properties, it might be a joint responsibility. Northumbrian Water will clarify this when they investigate.
Final thoughts
Low water pressure is rarely an emergency, but it’s worth sorting out. Start with the simple checks, then call in a plumber if the problem persists. Most causes are fixable, and once sorted, you’ll wonder how you put up with it for so long. If you’re unsure whether the problem is internal or on the mains side, get in touch and we’ll diagnose it properly.