Plumbing · Putney, London
Blocked Drains in Putney
[Honest Plumber Putney](/) will tell you before you pay anyone whether your blocked drain is yours to fix or Thames Water's. It matters, because a blockage a few metres past your boundary can cost you a call-out for a job that was never yours. Ring 07782 232151 and we match the problem to an independently owned local partner company that does drain work near SW15.
Most household blockages are cleared by manual rodding or high-pressure jetting. Published London guides put manual clearance at roughly £100 to £180 and jetting at £180 to £350, with a CCTV drain survey adding £150 to £450 where the cause is unclear. The partner company quotes in writing after looking at the drain, and you decide before anything is cleared.
Local ground is part of the story. Putney Heath covers about 400 acres and the streets running off it are lined with trees, so leaves pack gullies and hoppers every autumn. In West Putney the council's own conservation appraisal treats street trees as a feature of the district, and roots going after joints in old clay and ceramic drain runs are a well-known cause of repeat blockages.
Barnes is a different problem. It sits about 8 m above sea level, in Flood Zones 2 and 3 according to a local group, and Richmond Council's investigation of the July 2021 flooding found sewer and surface-water flooding to be the most frequent source. A drain that backs up in Barnes after a downpour may be the public sewer filling, not anything you did.
Converted houses add a further wrinkle. Where a Victorian terrace was split into flats, several households may share one drain run, so a blockage at the bottom can show up as a smell or a gurgle in the flat at the top. Working out which pipe belongs to whom is half the job.
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Call-outs
Where the Blockage Is Decides Who Pays
A drain has three zones, and the zone sets the price, the method and the responsible party.
Inside the Home: Traps, Wastes and Toilets
A slow basin, a bath that holds its water or a toilet that refuses to flush is usually a local blockage in the trap or waste pipe. The partner company clears it with a plunger, auger or rods and tells you what caused it. Published London figures put a blocked toilet at £100 to £200. Our toilet repair page covers the cistern side.
Your Own Drain: Gullies, Manholes and Runs
When several fixtures back up at once, or a yard gully overflows, the blockage sits in the drain you own up to your boundary. Rodding clears most, and jetting scours grease and scale from the pipe wall. Leaf fall around the Heath and root growth into old joints are the usual suspects, and a camera survey shows whether the pipe itself has failed.
Shared Drains and the Public Sewer
In converted flats and terraces, the drain beyond your own pipe may be shared, and the public sewer is Thames Water's. The partner company will not charge you to clear what you do not own. They clear what is yours, tell you plainly where the rest begins and explain how to report it. That honesty can save the whole call-out.
What's Included
How a Drain Call Is Handled
Diagnosis first, because clearing the wrong pipe is the most expensive mistake.
Questions Before Dispatch
We ask which fixtures are affected, whether anything is overflowing and when it started. Three symptoms tell the partner company whether to bring rods, a jetter or a camera.
Clear, Then Prove It
After clearing, the partner runs water to confirm the drain flows freely. If it blocked because the pipe is cracked or misaligned, you are told, with the repair quoted separately in writing.
A Reason, Not Just a Receipt
You should leave knowing whether it was grease, wipes, roots or a collapsed section. Without the cause, you are simply booking the next blockage.
Tips
Warnings and Habits
Drains complain well before they stop.
Signs a Drain Is Struggling
Catch these early and the fix is usually small.
- A bath or basin that drains slower than it did last month
- Gurgling from the toilet when the washing machine empties
- A drain smell near a gully or inspection chamber
- Water standing around a yard gully after rain
- Damp, sunken ground along the line of a buried drain
What Does the Damage
Most blockages begin with one of these.
- Fat and cooking oil poured into the kitchen sink
- Wet wipes, even those labelled flushable
- Cotton buds, sanitary products and nappies
- Leaves and silt packing outside gullies
- Roots entering old clay joints
The Difference
Putney Drains, Plainly
Three corners of the patch, three different kinds of blockage.
Putney and the Heath Edge
Heath-edge roads and tree-lined streets send leaves into gullies and hoppers each autumn. Older houses keep their original clay runs, and Wandsworth's building control looks at new drainage work under Part H.
Roehampton Estates
Alton Estate blocks and Dover House cottages have shared stacks and communal drains, so a blockage on a lower floor can trace back to something several flats away.
Barnes and the River
Barnes drains work harder in storms because the land is low and the sewers are shared. Richmond Council recommended liaison with Thames Water on surface-water sewer capacity after the 2021 event.
Related faults often travel together, so see leak detection and repair if damp appears near a drain, or browse all services.
What Counts as a Blocked Drain
A blocked drain is any obstruction that stops waste water leaving the property: in a fixture's trap, in the pipe from the house to the street, or in a shared run beyond your boundary. Each location needs a different method and has a different owner, which is why the first conversation matters more than the machine.
Drainage design in England is covered by Building Regulations Part H, which sets out falls, access points and materials. Older Putney houses still rely on Victorian pipework, so a drain that blocks twice in a season may be telling you about its condition rather than your habits.
Why Putney Blocks and How We Say So
Leaf Fall From the Heath
Putney Heath's tree cover means gullies, hoppers and surface-water drains collect leaves from autumn onwards. A clear-out before the first storm costs far less than clearing a flooded yard.
Conversions With Shared Drains
Houses split into flats often drain through one run. A problem in the ground-floor flat may begin three flats up, and your written quote should reflect that.
Rain-Fed Backing Up
On low ground near the river, a downpour can fill the surface-water sewers faster than they empty. Barnes Common's Beverley Brook catchment has had more than 500 misconnections identified between 2020 and 2026, a reminder that not every drain does what its owner thinks it does.
When the Honest Answer Is "Not Yet"
A Slow Drain Is Not Always a Blocked One
A basin that empties slowly after a month of heavy use may only need its trap cleaned. We would rather the partner company said so than jetted a healthy pipe. If a quick clear solves it, the written quote should say that, and the price should match.
Doing Nothing Has a Cost Too
Left alone, a partial blockage tends to become a full one at the worst moment, typically a Sunday evening with guests in the house. A small clear now is usually cheaper than an emergency later, and the emergency plumbing line is there if it does overflow first.
Straight Answers
How much does it cost to unblock a drain in Putney?
Published London guides put manual clearance at roughly £100 to £180 and high-pressure jetting at £180 to £350. A CCTV survey, where the cause is unclear, adds roughly £150 to £450. These are published ranges, not a promise from us. The partner company looks at the drain, quotes in writing and waits for your agreement before clearing.
Is the blocked drain my responsibility or Thames Water's?
Roughly speaking, the pipe that serves only your property is yours, while shared sewers and lateral drains outside the boundary belong to Thames Water. Which is which depends on your layout, and in a converted flat it can be confusing. The partner company traces the blockage and tells you where it sits before you pay. If it lies in the public sewer, you report it to Thames Water instead.
My drain backed up after heavy rain. Is that my fault?
Probably not. Richmond Council's investigation of the July 2021 flooding found sewer and surface-water flooding to be the most frequent source in the borough, and Barnes is low-lying in Flood Zones 2 and 3. When the public sewer fills, waste can back up into low gullies and ground-floor fixtures. The partner can clear your side, but tell Thames Water too.
What is the difference between rodding and jetting?
Rodding pushes flexible rods with a cutting head through the blockage, and it suits most simple obstructions. Jetting forces high-pressure water along the pipe and cleans the walls, which removes grease, scale and light roots. Jetting costs more but leaves a cleaner pipe. The partner chooses after assessing the drain, and explains the choice before it starts.
Can tree roots block a drain in West Putney?
Yes. Roots find moisture and enter old clay or ceramic joints, then thicken into a mat that traps paper and waste. West Putney's street trees and the Heath edge make this a realistic cause. Jetting can cut roots back, but a camera survey shows whether the pipe is cracked. If it is, repair or relining is the only lasting cure.
Why does my toilet gurgle when the washing machine empties?
Gurgling usually means air is being pulled through a water seal because the drain is partly blocked further along. It is a warning that a full blockage is forming. Clearing it now is cheaper than clearing it after it overflows. If the gurgle comes with a slow drain or a smell, ring us before the blockage turns into a flood.
Do I need a CCTV drain survey?
Not for every blockage. It earns its cost when a drain keeps blocking, when roots or a collapsed section are suspected, or when you are buying a property and want to know what is underground. A camera shows the pipe's condition and the exact position of a fault, so nobody digs in the wrong place. The partner quotes it separately so you can choose.
Is it safe to use chemical drain cleaners?
Strong chemicals can damage older pipes and harm the person using them. They rarely clear a serious obstruction, and they make the partner's job riskier because the water in the drain may be caustic. A plunger is a better first step, followed by rods or a jet if it fails. If you have already poured something in, tell the partner so they can protect themselves.
What can I do to stop blockages coming back?
Bin fat, oil and wet wipes instead of washing them away, fit strainers over plugholes and keep outside gullies clear of leaves. Near the Heath and under street trees, clearing gullies each autumn helps. If the cause turns out to be a cracked pipe, habits will not fix it and a repair is needed. Your partner should tell you which it is.
Can you help with a blocked toilet in a flat?
Yes. A single blocked toilet is usually a local blockage and is cleared quickly. If several flats are affected, the problem is probably the shared stack or drain, which the freeholder or managing agent may need to arrange. The partner will tell you which case you are in. Our emergency plumbing line is open at any hour for a toilet that cannot wait.
Do you clear drains in Roehampton and Barnes?
Yes, across Putney, West Putney, Putney Heath, Roehampton, Barnes and East Sheen. Barnes and East Sheen sit in Richmond upon Thames rather than Wandsworth, so a street-level query may go to a different council. See the Roehampton and Barnes pages for local detail, and ring 07782 232151 for the nearest partner. The partner company will confirm the borough and the owner of any shared pipe before it quotes.
What if the partner finds a cracked drain?
You are told, shown the evidence if a camera was used, and given a separate written quote for the repair or relining. Nothing is done without your agreement. A cracked drain is not an emergency in itself, so you have time to compare. Work on drainage is expected to follow Building Regulations Part H, and the written quote should state plainly what is being repaired and what is being left alone.
Drain Backing Up? Ring Before It Spreads
Written price first, and an honest answer on who owns the pipe. Call 07782 232151.
07782 232151