Quick answer
Unblocking clears what sits inside a pipe, while a repair fixes the pipe itself. If the same drain blocks again within weeks, the pipe may be damaged. A CCTV survey can show which problem you have, and the request form is open 24/7.
Why a clear-out sometimes does not last
Since most blockages are debris in a sound pipe, a clear-out often solves the problem for good. Yorkshire Water says nearly 50% of blockages in Yorkshire come from wipes.
Some drains block again within days or weeks. A cracked joint or a sagging section catches debris each time water flows. As a result, the pipe silts up again soon after you clear it.
Two failed clear-outs close together is the strongest warning. Keep a note of the dates and of what the engineer found each time, because that record helps the next person diagnose the cause.
Warning signs that point to damage
Damage often shows up around the pipe, while a plain blockage shows only inside it. Look for these signs around your home and garden:
- The same drain blocking again soon after a clear-out
- A dip or soft, sunken strip of ground along the likely line of the pipe
- A damp patch or musty smell near a ground-floor wall
- A sewage smell that stays after the drain is cleaned
- New rat activity near a drain, gully or outbuilding
- Paving or a patio that cracks or sinks above the run
No single sign proves damage. However, two or more together are a good reason to inspect the run before you book another clear-out. Rats can use broken pipes, but one sighting alone tells you little.
What damages a drain
Age is the first cause. City of York Council's 2008 survey of private homes counted 12,814 built before 1919, or 17.9%. The survey says nothing about drain condition, although older homes can have older pipes.
Roots are the second cause. They head for moisture, because a hairline crack in a joint gives them a way in. Once inside, they widen the gap as they grow and trap more debris.
Ground movement is the third. Heavy loads over a run, nearby building work, or soil that shrinks and swells can all shift a pipe out of line. Because you cannot prevent these causes, early checks matter more than prevention.
How a CCTV survey tells the two apart
A camera pushed through the pipe records its inside. It can show cracks, roots, displaced joints and collapsed sections, while the footage turns a guess into a clear decision.
Ask for the recording and a written report, because both help if you need a second opinion. Our guide to why every home buyer needs a CCTV drain survey explains what a report should include. If you live near Selby or Tadcaster, read what a CCTV survey finds in Selby and Tadcaster.
To book one, see the CCTV drain surveys page or drain surveys in York. Since a sound pipe points to ordinary debris, our guide to why outside drains block in York covers that case.
Repair options
Because the survey result decides which route fits, ask to see it. A good survey names the fault and where it sits. Most drain repairs fall into three groups:
- Patch repair, which fixes one short damaged section
- Pipe relining, which cures a resin liner inside the old pipe
- Drain excavation, which digs down to replace the pipe
Relining can often repair a cracked or root-affected pipe without digging up a garden or drive. Read more on the pipe relining page. Excavation is still needed when a pipe has collapsed, has shifted badly, or sits where a liner cannot reach. The drain excavation page explains the process, while the main drain repairs service page covers all three routes.
Ask the engineer why they chose one option over the others. Their answer should refer to the survey footage, since that is the evidence.
What repairs can cost
These are typical UK ranges from the sources named, not York quotes. Treat each source on its own, because blending them would mislead.
- MyJobQuote gives a patch repair at £150-£300
- MyJobQuote gives relining at £80-£150 per metre in one section of its repair page and £60-£100 per metre in another
- WP Drainage gives relining at £70-£250 per metre
The ranges do not match, since the length and condition of your pipe matter a great deal. Ask the engineer for a written quote before work starts. Ask what the repair covers and for how long.
Who owns the damaged pipe
Yorkshire Water's "whose pipe is it" page sets out the split. You own the drain from your home until it reaches a shared drain or a public sewer, while Yorkshire Water looks after public sewers. It also looks after drains outside your boundary that flow into one.
Yorkshire Water also looks after a shared drain that flows into a public sewer if your home was built before 2011. Check the page before you pay for a repair, since the owner of the damaged section pays. Local pages cover drain repairs in Tadcaster and drain repairs in Bishopthorpe. The services hub lists the rest, while the locations page shows your town.
Repair pages are also available for these places:
Although the form is open 24/7, mark your request urgent if sewage is coming up. When you are ready, send it through the contact form. Say where the problem is and what you have noticed.
Frequently asked questions
Do I need to dig up my garden to repair a drain?
Not always. A cracked or root-affected pipe that keeps its shape can often take a liner from the inside. Digging is for collapsed or badly shifted sections, while relining suits the rest.
How do I know if it is damage or a blockage?
A single blockage that clears and stays clear is usually debris. Repeat blockages, sunken ground, damp, a lasting smell or rats near the run point to damage. However, only a CCTV survey confirms which one you have.
Should I keep clearing the drain until it is fixed?
Repeat clear-outs treat the symptom, not the cause. Each one costs money, while a damaged pipe keeps getting worse. Ask for a survey after the second blockage, before you pay for a third clear-out.
Who pays for a damaged drain outside my boundary?
Yorkshire Water says it looks after drains outside your boundary that flow into a public sewer. Inside your boundary, the drain serving only your home is yours. Check the whose-pipe page, then ask the engineer which side of the line the fault sits on.
