How to Tell If You Have a Leaking Water Supply Pipe

A leaking water supply pipe might not seem like an urgent problem — until you’re facing high water bills, property damage, or even structural issues. The trouble is, many leaks happen underground or out of sight, making them hard to spot until it's too late.

At JPT, we specialise in water pipe repairs across Hertfordshire, Bedfordshire, Cambridgeshire and North London. Here’s how to tell if you might have a leak — and what to do next.

Signs You May Have a Leaking Water Supply Pipe

1. Unusually High Water Bills

If your water usage hasn’t changed but your bill has jumped significantly, it could be a hidden leak in the supply pipe between the main and your home.

2. Damp Patches in Your Garden or Driveway

Soft, soggy or waterlogged areas on your lawn, gravel or tarmac that don't dry out — even in dry weather — can indicate a leaking pipe underground.

3. Reduced Water Pressure

A slow-running tap or weak shower pressure may be caused by a supply pipe that’s cracked or leaking, reducing flow before the water reaches your home.

4. Noise in Your Plumbing System

Hearing hissing, dripping or banging noises when taps are off? That could be water escaping under pressure from a damaged pipe.

5. Air or Discoloured Water from Taps

Bubbles, cloudy water or brownish staining could mean sediment is entering the supply due to a damaged or corroded pipe.

6. Visible Cracks or Sinkholes

In extreme cases, leaking pipes can cause cracks in paths, driveways or even small sinkholes where water has undermined the ground over time.

What Causes Supply Pipe Leaks?

• Aging or corroded pipes
• Ground movement or tree root damage
• Poor quality materials or past installations
• Freezing weather and pipe bursts

What to Do If You Suspect a Leak

If you’ve noticed any of the above signs, don’t ignore them. The sooner you act, the more damage (and cost) you can prevent.

At JPT, we offer:

• Expert underground leak detection
• Water pipe repairs and replacements
• Trenching and reinstatement work
• Full site clean-up and finish (including driveways and patios)

We’re fast, fully equipped, and ready to act — whether it’s a small domestic supply pipe or a larger commercial repair.

Call JPT Today for Water Pipe Repairs

If you’re in Hertfordshire, Bedfordshire, Cambridgeshire or North London, call JPT on 01462 735450 for a quick diagnosis and reliable repair service.

Don't wait for a minor leak to become a major problem — we're here to help.