A blocked drain is stressful enough without a dispute about who pays for it. Water backs up in the sink, the toilet gurgles, and you start to wonder whose problem it is. The answer depends on where the blockage sits, and that is not always obvious from inside the house.
In general, three parties can own a drain in Hull: you, a group of neighbours, or the water company. This guide explains how to tell them apart, using published guidance from Yorkshire Water and the UK government. It also covers what tenants should do.
Your own pipes and drain
Yorkshire Water says you are generally responsible for the pipes inside your property. You also look after the drain that runs from your property until it joins a shared drain or a public sewer. That includes the waste pipes from your sinks, baths and toilets, plus the underground run that carries them away.
Because of this, many blockages are your responsibility. A single slow sink or one toilet that will not flush often points to a problem on your side. When only one fixture is affected, the cause is usually close to that fixture.
If the blockage is in your own pipework, a specialist can clear it. For example, drain unblocking covers both indoor and outdoor lines. If the problem is one fitting, such as a tub that drains slowly, blocked bath drains are often a quick fix.
Shared drains and the 2011 transfer
Before 2011, many homes shared a private sewer with their neighbours. The government explained that on 1 October 2011, private sewers became the responsibility of water and sewerage companies. A private sewer here means a drain shared by two or more properties.
Lateral drains moved at the same time. A lateral drain serves one property but lies outside its boundary. As a result, the stretch of pipe beyond your boundary is usually no longer your cost.
However, drainage that serves one property only and sits inside its boundary stays with the owner. Yorkshire Water also notes that it covers shared drains built before 2011 that flow into a public sewer. Newer shared drains may follow different rules, so check before you assume.
Public sewers belong to the water company
Yorkshire Water looks after public sewers and the drains outside your property boundary. If a blockage sits there, it is the company's job to deal with it. Check the facts first, because a blockage on your own side stays your cost.
You can often spot a public sewer problem from the symptoms. If neighbours have the same trouble, the cause is likely in the shared or public network. Yorkshire Water suggests asking neighbours as one of its first checks.
In that case, report it through the blocked drains form on Yorkshire Water's website. A technician will visit to find the cause. They will clear and clean up if the blockage is theirs. If it is on your property, you will need a drainage contractor instead.
Boundaries can be hard to judge. A drain that looks like yours may in fact be a shared pipe that left your land long ago. Because of this, the age of the home and the way its drains were laid both matter.
How to work out where the blockage is
Start with simple checks. Look at whether other taps, sinks and toilets drain slowly, or just one. If a ground-floor toilet struggles but nothing else does, the fault may be yours. If several fixtures struggle at once, the cause may be further along the drain.
Next, ask neighbours whether they have the same problem. If they do, the shared or public drain is the likely cause. Even so, you cannot be certain without looking. Yorkshire Water also suggests counting how many fixtures are affected, since one slow toilet points to your side of the drain. Meanwhile, a temporary water supply interruption can stop a toilet flushing, so check that the taps run before you blame the drain.
A camera survey can settle the question. It shows the exact point of the blockage and where it sits against your boundary. If the blockage is in an outside run, external drain unblocking service clears it. The same ideas apply across the area, whether you live near Hull or need blocked drains in Beverley or drain unblocking in Driffield.
What tenants should do
If you rent, Yorkshire Water advises you to tell your landlord first. Do not book a contractor yourself and expect to be repaid, unless your landlord agrees in writing.
Keep a record of when the problem started and which fixtures are affected. Photos of any water backing up can help. Also tell your landlord if sewage appears inside, because that needs fast attention.
If you own your home, Yorkshire Water recommends contacting your insurer before you hire a drainage contractor. Its guidance says that failing to tell your insurer could affect a future claim. Check your policy first, since cover varies.
Next steps
Work through the checks above, then decide who to contact. If the blockage looks like your side, ask for help from a local specialist. If it looks like the public sewer, report it to Yorkshire Water.
Not sure which applies? Request a quote online and describe the symptoms. We will tell you what we think is happening and how we would clear it.