Who Is Responsible for a Blocked Drain?

Homeowner, landlord, tenant, freeholder or water company: who pays to clear a blocked drain in England, and how to work out which one applies to you.

When a drain blocks, the first argument is usually about who pays for it. The answer in England depends on where the blockage is, who owns the pipe at that point, and in a rented home, what caused it. Working that out before you commit to anything can save you the whole bill.

The short version

Pipes inside your property boundary that only serve your home: your responsibility as the owner
The lateral drain and shared sewers outside your boundary: usually the water company
Rented home, fair wear and tear or a fault in the pipework: the landlord
Rented home, blocked by wipes, fat, nappies or misuse: usually the tenant
Flats and shared drains: often the freeholder or managing agent through the service charge
Gullies and drains in the public road: the local highway authority

If you own your home

You are responsible for the drains within your boundary that serve your property alone. That covers the gully outside your kitchen, the soil pipe, and the run out to the edge of your land.

Once the pipe leaves your boundary it becomes a lateral drain, and since the 2011 private sewer transfer in England and Wales most lateral drains and shared sewers passed to the regional water and sewerage companies. So a blockage at the far end of the run, or in a sewer shared with neighbours, is often not yours to pay for.

The practical test is whether the pipe serves only your property. If more than one home uses it, or it sits beyond your boundary, contact your water company first: for most of London and Essex that is Thames Water, with parts of Essex served by Anglian Water and Essex and Suffolk Water. Many will attend a shared blockage at no charge.

If you rent

Under section 11 of the Landlord and Tenant Act 1985, the landlord must keep the drains and sanitary installations in repair and proper working order. A blockage caused by a defect, a collapsed pipe, root ingress or ordinary use is the landlord's to fix, and the tenant should report it in writing.

Where the tenant caused it, the position flips. Wet wipes, cooking fat, sanitary products, nappies or anything else that should not go down a drain is misuse, and the cost usually falls to the tenant. Tenancy agreements often spell this out, so it is worth reading yours before you argue about it.

Whoever pays, get it cleared quickly. Standing waste water is a health issue and a slow blockage tends to become an overflow.

If you live in a flat or manage a block

In a block, the drains beyond your own waste pipes are normally communal, which puts them with the freeholder or the managing agent and makes them a service charge cost rather than a personal one. Your own sink, bath and toilet waste up to the point it joins the stack is still yours.

Managing agents dealing with repeat blockages on a shared stack are usually better served by a survey than another clearance. A shared run that blocks every few months normally has a physical cause, and one report tends to end a long run of call outs.

Commercial property and leases

For commercial premises, the lease decides it. A full repairing lease typically puts drainage on the tenant, including grease management in kitchens; other leases keep it with the landlord and recover it through the service charge. Check the repairing obligations and the plan attached to the lease before you accept a bill.

Food businesses have a further point to watch: fat, oil and grease discharged into a sewer can put you in breach of your obligations to the sewerage undertaker, so planned jetting is generally cheaper than the alternative.

Drains in the road and highway gullies

Flooding around a road gully, or a blocked drain in the carriageway or pavement, belongs to the local highway authority, which is the borough or county council in most of London and Essex. Report those to the council rather than a drainage contractor.

What to do right now

Look for the boundary first. If waste is backing up inside the property, or the chamber nearest your house is full while the one further out is clear, the blockage is almost certainly on your side and needs clearing. If the outer chamber is also full, or neighbours have the same problem at the same time, call the water company before you pay anyone.

Photograph what you find and note the date and time. If there is a dispute later, with a landlord, tenant, insurer or agent, that evidence is what settles it.

If it is your side of the boundary, our engineers cover London and Essex 24 hours a day and will tell you what they find before any work starts. Call Rapid Drainage Services on 020 3488 6280.