Coverage: W3, W5, W7, W13, UB1, UB2, UB5 and UB6, plus the NW10 fringe around North Acton and Park Royal.
What this covers: blocked sinks, toilets, baths, showers, gullies, private drains and soil stacks — diagnosis, rodding, jetting and CCTV surveys.
Not this page: a single slow toilet is often toilet repairs; clean-water flooding from a pipe is burst pipes or the emergency plumber page.
Costs: what you pay depends on whose pipe it is — see what it costs.
Availability: drainage response varies by plumber; listings show who covers out-of-hours — confirm when you call.

Jump to: What’s blocking it · Whose drain is it? · Ealing’s drainage pressure · Safety first · By district · Costs · FAQs

What’s actually blocking it

Most domestic blockages are built, not born: fat, oil and grease cooling and hardening in kitchen waste pipes; wipes — including the “flushable” ones — snagging in bends; hair and soap binding in bathroom wastes; scale narrowing older pipes year by year; and the occasional toy, dishcloth or air freshener cap that nobody admits to. Outside, leaves, silt and roots do the same to gullies and older clay runs.

Where it blocks tells you what you’re dealing with. One slow fixture — a single sink or basin — is usually a local waste-pipe problem, often clearable at the trap. Several fixtures backing up together, gurgling when the toilet flushes, or waste appearing at an outside gully or manhole means the blockage is downstream, on the drain or stack — a bigger job, and possibly not your pipe at all. In flats, a stack blockage can appear first in the lowest affected flat even when the cause sits in a shared section above — so clearing one toilet may not solve the building’s problem. Smell without slow drainage points elsewhere again: a dried-out trap, a failed seal, or a misconnection rather than a blockage.

A good drainage plumber diagnoses before quoting: where it’s blocked, what with, and whose pipe it’s on. For anything recurring, a CCTV survey answers all three with evidence — and tells you whether you’re paying to clear a one-off or to keep clearing a defect. A useful CCTV report shows the blockage location, the pipe’s condition, any defects — root ingress, displaced joints, a belly, a collapse — evidence of misconnections, and whether the run looks private, shared or likely Thames Water’s responsibility.

Whose drain is it?

This is the question that decides who pays — and Ealing Council sets the ladder out plainly. Ealing Council says homeowners and landlords are responsible for drains up to the connection with drainage from another property; beyond that point, sewers and lateral drains are maintained by Thames Water, and sewer or lateral drain problems such as blockages should be reported to Thames Water on 0800 316 9800.¹ That holds borough-wide regardless of who supplies your drinking water — Thames Water is the sewerage undertaker for the whole borough even where Affinity Water supplies the taps.

The third rung is the council’s, and the council’s own gully cleaning page is blunt about its limits: road gullies — the grated pots that drain the highway — are the only drains the council is responsible for, reported on 020 8825 6000; any other drainage issue goes to Thames Water.²

So the practical test before paying anyone: serving only your property, inside your boundary → yours, and exactly what the verified plumbers above handle. Shared with a neighbour, or beyond the connection point → lateral drain or sewer, Thames Water’s job, free to report. A grated drain in the road → council. And one Ealing-specific wrinkle worth knowing: for former council houses, the council says responsibility beyond the connection point can sit with the owners, Thames Water or Ealing Council depending on the sewer layout of the estate¹ — on an ex-council street, establish the line before commissioning private work.

Council tenants: blocked drains and stacks in council homes and on council estates go through the council’s repairs routes — 0800 181 744 or 020 8825 5682 for emergencies³ — not a private callout. Private renters: drains and sanitation installations fall under the landlord’s repairing obligations in Section 11 of the Landlord and Tenant Act 1985⁴ — report it rather than booking. One fair caveat: if a blockage was caused by tenant misuse — wipes, fat, the wrong things flushed — the landlord may be able to recharge the cost, so the three-Ps rule protects your deposit as well as the pipe.

Why Ealing drains are under pressure

Drainage in this borough isn’t a theoretical topic. The council’s own Infrastructure Delivery Plan records that Ealing is at risk of flooding from sewer overflows and capacity issues, with fluvial flood risk concentrated around the River Brent — a designated main river running through the borough.⁵ And the council has written to Thames Water about sewage entering the River Brent — naming Perivale, central Ealing, Pitshanger and Hanwell as the areas most affected, and asking Thames Water to investigate its network for foul-water misconnections to the surface-water sewer system.⁶

Misconnections deserve a plain-English line, because they’re a drainage fault most households have never heard of: a toilet, washing machine or sink plumbed into the surface-water drain instead of the foul drain sends wastewater towards the river instead of the treatment works. They’re worth checking whenever an appliance, bathroom or extension has been added over the years — and a CCTV survey or dye test settles the question. Getting one fixed isn’t just compliance housekeeping; in this borough it’s part of a documented local problem.

The practical upshot for a blocked-drain callout: diagnosis carries extra weight in Ealing. Blockage, misconnection, defective pipe and overloaded sewer can all produce the same symptom at your gully — and they have four different fixes, three different bill-payers, and one river downstream.

Safety first

Sewage is a health hazard, not just a smell. Keep children and pets away from any backup or overflow, wear gloves for any contact, wash hands thoroughly afterwards, and disinfect affected indoor surfaces once the cause is fixed. Don’t hose sewage towards a road gully — that’s the rainwater system.

Think twice before chemical drain cleaners. Caustic products sitting in a fully blocked pipe don’t clear it — they create a standing hazard for whoever opens the trap next, and they can damage older pipework. Tell the plumber if any chemical has gone down before they work on it. Mechanical clearing — plunger, rods, jetting — does the job without the hazard.

Manholes and confined spaces are not DIY territory. Covers are heavier than they look and lift badly; chambers can hold foul air. Looking is fine; climbing in is not.

And the standing gas rule applies here too: if at any point you smell gas, that outranks everything on this page — leave switches and flames alone, open up, get out if it’s strong, and call the National Gas Emergency Service free on 0800 111 999 from outside.⁷

Find a verified drainage plumber by district

Acton (W3, parts NW10). Flats above older High Street and Churchfield Road shops may share rear drainage with the premises below — a blockage can be “yours, theirs or both,” and proving which with a camera beats arguing. The new Acton Gardens phases⁸ sit on brand-new drainage with adoption and management arrangements — report block drainage to the managing agent before paying privately.

Ealing (W5, W13). Converted period houses mean several kitchens and bathrooms feeding waste runs designed for one household — and a blockage in the shared section is a shared problem. Central Ealing and Pitshanger were among the areas named in the council’s River Brent letter⁶ — if drainage work is happening anyway, a misconnection check is cheap insurance.

Greenford (UB6, parts UB5). In the Golf Links estate’s maisonette blocks and towers⁹, a blocked communal stack can surface in the lowest flat first — the fix sits with the council’s communal repairs route, not the household that sees it. Canal-side and Brent-side green space puts leaves, silt and roots on the gully suspect list.

Hanwell (W7). Hanwell was named in the council’s Brent letter⁶, and its older streets carry the classic Victorian-era arrangement: long shared rear runs serving a terrace, where one household’s wipes become the row’s backup. The connection point — and therefore Thames Water’s responsibility — often starts closer than people think.

Northolt (UB5). In parts of Northolt with post-war estates, stacks and shared runs can mean a blockage is not any one flat’s to fix — and on ex-council streets the former-council-house rule¹ makes establishing the line doubly worthwhile.

Perivale (UB6). First-named in the council’s Brent correspondence⁶ — and on older interwar-era clay runs, where they have not been renewed, ground movement and root growth have had decades to work. Recurring blockages on runs like that are a CCTV-survey conversation, not a third jetting visit.

Southall (UB1, UB2). Behind the Broadway and South Road parades, food premises and the flats above them can share rear drainage — kitchen grease and domestic waste meeting in the same pipework, which is why a “residential” blockage here sometimes has a commercial cause. Larger or extended households elsewhere in Southall can simply put more through the pipes; for food-business grease management itself, see commercial plumbing in Ealing.

What it costs

The first pricing rule in Ealing: whose pipe it is decides whether you pay at all. A sewer or lateral drain blockage is Thames Water’s to clear; a road gully is the council’s; only your own private drain is a private bill. Run the whose-drain check before booking. For work that is yours, ask what’s included: diagnosis, the clearing method (plunge, rod, jet), whether a camera check of the cleared run is included, and what a return visit costs if it re-blocks.

Editorial estimate only, for orientation. These are NOT regulated rates, NOT market data and NOT a published cost survey — access, length of run and method change everything. Always get a written quote.

There is no official price list for drainage work in Ealing. Local cost context: Ealing is inside London’s ULEZ¹⁰, and half the borough’s road network sits in controlled parking zones⁵ — jetting rigs need kerbside access, so a CPZ permit cost can reasonably appear on a daytime quote. For quote anatomy, see how to read a plumbing quote.

Frequently asked questions

Why verified plumbers — not a general directory

Drainage is where rogue trading thrives, because the work is invisible: you can’t see down the pipe, so you’re trusting the diagnosis, the method and the bill. That’s why every listing here is checked before going live and re-verified annually: we confirm the business is legitimately trading and verify the named contact, we check evidence of public liability insurance, and we confirm the plumber covers Ealing’s W and UB postcodes before a profile is approved.

A drainage-specific check worth making yourself: where a repair produces debris, excavated material or removed fittings to be taken away, ask whether lawful disposal is included — GOV.UK is clear that a business that transports waste must be registered with the Environment Agency as a waste carrier.¹¹ For water-fittings work you can also look any plumber up on WaterSafe, the free, water-industry-backed national register, and where any gas work arises we confirm registration directly with the Gas Safe Register. Profiles may be suspended or removed if credentials lapse or credible concerns are raised — see the full verification process →

There’s no pay-to-play ranking of listings and no customer middleman fee: enquiries go directly to the plumber.

Related areas

Verified drainage plumbers across Ealing’s neighbourhoods, including:

• Acton
• Brentham Garden Suburb
• Central Greenford
• Dormers Wells
• Ealing Broadway
• Ealing Common
• East Acton
• Greenford
• Greenford Broadway
• Hanger Hill
• Hanwell
• Hanwell Broadway
• Lady Margaret
• Montpelier
• North Acton
• North Ealing
• North Greenford
• North Hanwell
• Northfields
• Northolt
• Northolt Mandeville
• Northolt West End
• Norwood Green
• Perivale
• Pitshanger
• South Acton
• South Ealing
• Southall
• Southall Broadway
• Southall Green
• Southall West
• Walpole
• West Ealing

Related services

Other verified plumbing services in Ealing:

• Emergency Plumber in Ealing
• Burst Pipes in Ealing
• Leak Detection in Ealing
• Toilet Repairs in Ealing
• Tap Repair & Installation in Ealing
• General Plumbing in Ealing
• Bathroom Plumbing in Ealing
• Kitchen Plumbing in Ealing
• Washing Machine & Dishwasher Installation in Ealing
• Boiler Repair in Ealing
• Boiler Installation in Ealing
• Boiler Servicing in Ealing
• Central Heating Repair in Ealing
• Commercial Plumbing in Ealing

Related guides

• London Plumbing Costs & Compliance Guide 2026
• How to Read a Plumbing Quote — A London Homeowner’s Guide 2026
• Victorian Terrace Plumbing Guide — London 2026
• London Landlord Plumbing Compliance Checklist 2026

A blocked drain in Ealing is a responsibility question before it’s a plumbing question: private drain, lateral, Thames Water sewer or council gully. Answer that first — it’s free — and where the job genuinely is yours, the verified drainage plumbers listed above bring the diagnosis, the right clearing method, and the camera evidence when a run keeps misbehaving.

Contact verified drainage plumbers in Ealing ↑

← Back to all plumbing services in Ealing

Last reviewed: June 2026 by Adiel Khan — SFEDI-accredited business advisor 20+ years experience (South East Enterprise Ltd) and operator of VerifiedPlumbers. LinkedIn ↗

This page is checked for compliance and regulatory accuracy against the regulations and bodies cited on this page, including Section 11 of the Landlord and Tenant Act 1985, National Gas, Thames Water, Ealing Council, the Environment Agency and Transport for London. Source links are provided within this page where relevant.

Sources & further reading

1. Ealing Council (drains and sewers — responsibilities and maintenance) — https://www.ealing.gov.uk/info/201146/neighbourhood_and_streets/2060/drains_and_sewers_-_responsibilities_and_maintenance
2. Ealing Council (gully cleaning) — https://www.ealing.gov.uk/info/201153/street_care_and_cleaning/235/gully_cleaning
3. Ealing Council (reporting a housing repair) — https://www.ealing.gov.uk/info/201093/repairs_-_council_property/2742/reporting_a_housing_repair
4. Landlord and Tenant Act 1985, Section 11 (landlord repairing obligations) — https://www.legislation.gov.uk/ukpga/1985/70/section/11
5. Ealing Council Infrastructure Delivery Plan, Part One: Infrastructure Baseline Report, Feb 2024 (sewer overflow and capacity risk; River Brent; CPZ coverage) — https://www.ealing.gov.uk/download/downloads/id/19508/part_one_infrastructure_baseline_report.pdf
6. Ealing Council letter to Thames Water (sewage entering the River Brent; misconnections) — https://www.ealing.gov.uk/download/downloads/id/18312/to_thames_water_-_sewage_entering_into_the_river_brent.pdf
7. National Gas (gas emergency — what to do, 0800 111 999) — https://www.nationalgas.com/emergency-contacts
8. Ealing Council (South Acton Estate regeneration) — https://www.ealing.gov.uk/info/201104/housing_regeneration/377/south_acton_estate
9. Ealing Council (Golf Links estate — about the estate) — https://www.ealing.gov.uk/site/scripts/documents_info.php?documentID=372
10. Transport for London (Ultra Low Emission Zone) — https://tfl.gov.uk/modes/driving/ultra-low-emission-zone
11. GOV.UK (register or renew as a waste carrier, broker or dealer) — https://www.gov.uk/register-renew-waste-carrier-broker-dealer-england