Quick Answer: In England and Wales, the water company is responsible for the water main and the communication pipe up to your property boundary. From the boundary into your home, the supply pipe and all internal plumbing are the property owner’s responsibility. If the leak is on your side of the boundary, you arrange and pay for the repair.
A damp patch in the garden, a hissing sound under the floor or a sudden jump in your water bill all point to the same question: whose problem is this? The answer decides whether you call your water company or a plumber. This guide explains who owns which pipe, what to do in the first ten minutes of a leak, and how to choose a plumber you can trust. For small jobs generally, our guide on hiring a contractor for a small job is a good companion read.
Table of Contents 1. Which Pipes Do You Own? 2. Who Is Responsible for Drains? 3. What to Do When a Pipe Bursts 4. Signs of a Hidden Leak 5. Landlords and Rental Properties 6. How to Choose an Emergency Plumber 7. FAQs
Which Pipes Do You Own?
According to Ofwat’s guidance on supply pipes, water pipes fall into three groups:
| Pipe | Where It Runs | Who Is Responsible |
|---|---|---|
| Water main | Under the street | Water company |
| Communication pipe | From the main to your property boundary | Water company |
| Supply pipe (one property) | From the boundary to your internal stop tap | Property owner |
| Shared supply pipe | Serves more than one home | All owners it serves, jointly |
| Internal plumbing | Inside your home | Property owner |
The supply pipe often runs under the front garden or driveway, so a leak there can go unnoticed for months. Many water companies offer free or subsidised repairs to customer supply pipes in some circumstances, and some will reduce a bill inflated by an underground leak once it is fixed, so it is worth calling them before you pay for digging.
Who Is Responsible for Drains?
Drains follow a similar rule. A drain serving only your property and running within your boundary is yours. Once a drain is shared with a neighbour or crosses the boundary, it is usually a lateral drain or public sewer, which the sewerage company maintains. Since private sewers transferred to water companies in 2011, many shared pipes that were once the owners’ problem are now the company’s.
If the blockage is inside your boundary and only affects your home, a plumber is usually the right call. In the West Midlands, local firm GS Plumbing And Heating explains what it clears and how on its blocked drains page.
What to Do When a Pipe Bursts
| Step | Action |
|---|---|
| 1 | Turn off the water at the internal stop tap, usually under the kitchen sink |
| 2 | Switch off electrics at the consumer unit if water is near sockets or lights |
| 3 | Open cold taps to drain the system and reduce pressure |
| 4 | Move valuables and catch dripping water |
| 5 | Photograph the damage for your home insurer |
| 6 | Call a plumber for an emergency repair |
Find your stop tap before you need it. A stiff or seized stop tap is one of the most common reasons a small leak turns into a flooded floor. An emergency plumber can isolate and repair the leak and check that the stop tap actually works.
Signs of a Hidden Leak
- A water bill that rises without a change in use
- The water meter still turning with every tap off
- Damp patches on walls, ceilings or floors
- Low water pressure that appears suddenly
- A soft or unusually green patch in the garden near the supply pipe route
- Mould or a musty smell in one area of the house
If you see two or more of these, arrange professional leak detection and repair before the damage spreads into joists, plaster or flooring.
Landlords and Rental Properties
Landlords are responsible for keeping water supply and drainage in repair in most residential tenancies, and slow responses to leaks are a common cause of damp and mould complaints. Many landlords put a maintenance arrangement in place so leaks, drips and blocked wastes are handled quickly. GS Plumbing And Heating offers this through its property maintenance service for landlords and letting agents in the Black Country and north Birmingham.
How to Choose an Emergency Plumber
Emergencies are when homeowners are most likely to accept a poor deal. Keep these checks in mind:
- Ask for the call-out charge and hourly rate before the plumber travels
- Ask for a fixed quote for the repair once the problem is diagnosed, and if it is not urgent, get a second price using our guide to comparing contractor bids
- Check the firm has a real local address, not only a mobile number
- Avoid anyone who insists on cash only or pressures you into extra work
- Use our checklist on verifying contractor licence and insurance
For example, GS Plumbing And Heating is based at 4 Telford Close, West Bromwich, B71 2NB, and has more than 7 years of experience and over 200 completed jobs with a team of 7 local engineers. The firm is open 24/7, with calls answered instantly, on site within 60 minutes, and provides free, fixed quotes. It covers towns including West Bromwich, Smethwick, Oldbury and Tipton; see its plumber in West Bromwich and plumber in Smethwick pages for local details.
FAQs
Is the water company responsible for a leak in my front garden? Usually not. If the leak is between your property boundary and your house, it is on your supply pipe, which you own. The water company is responsible for pipes outside the boundary.
Who pays if my supply pipe is shared with a neighbour? A shared supply pipe is the joint responsibility of every property it serves, so repair costs are normally split between the owners.
Will my water company refund a high bill caused by a leak? Many water companies offer a one-off leakage allowance once you have repaired an underground supply pipe leak. Check your own company’s policy and keep the plumber’s invoice.
Does home insurance cover a burst pipe? Most buildings and contents policies cover escape of water damage, but not always the cost of finding and repairing the leak itself. Check your policy wording for trace and access cover.
Can I fix a leaking pipe myself? Minor fixes such as tightening a compression fitting are possible, but any work must meet the Water Supply (Water Fittings) Regulations 1999. For hidden or underground leaks, use a professional.
Final Thoughts
Before you call anyone, work out where the leak is. Outside the boundary, phone your water company. Inside the boundary or inside the house, shut off the stop tap and call a local plumber who can give you a fixed price in writing.
