Compare quotes from multiple verified Clapham plumbers
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When water is spreading and you need someone now, the first job is to stop it — and the second is to reach a plumber who can actually fix it. These are plumbers covering Clapham, each checked before being listed, so you can contact one directly.
✅ Checked before listing — identity, insurance, trading presence, Gas Safe (where relevant).
✅ Workmanship guarantee badges on listings — 1, 3, 6 or 12 months
⚠️ Water near electrics? Keep clear of water touching sockets, lights or the fuse board, and switch the power off at the consumer unit only if it’s safe and dry to reach. Smell gas too? Call 0800 111 999. Full safety guidance →
Contact verified plumbers in Clapham ↓
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Coverage: emergency help across Clapham’s SW4 and SW12 postcodes — the Old Town, Clapham Common, Clapham North, Clapham High Street, Clapham Park, Abbeville and Clapham South — plus the SW11 Wandsworth fringe.
What this covers: uncontainable leaks, no water, burst pipes, overflowing WCs and drains, and making a property safe before a full repair.
Not sure this is the right page? For a sudden burst specifically see Burst Pipes; for a slow or hidden leak see Leak Detection.
Costs: indicative emergency ranges are under What it costs — editorial estimates only.
Availability: each plumber sets their own hours — same-day and out-of-hours cover is shown on their individual profile.
Jump to: Stop the water first · Who fixes what in Clapham · Safety first · By area · What it costs · FAQs
Stop the water first
Before anyone arrives, the priority is to stop and contain the water. Find and turn off your internal stop tap (usually under the kitchen sink or where the supply pipe enters the property) to cut the supply, then open the cold taps to drain the system down. If water has reached electrics, switch the power off at the consumer unit only if it’s safe and dry to do so. Turn off the boiler or immersion heater, and catch what you can while you call a plumber.
In Clapham’s converted flats and period houses this matters twice over: a leak on an upper floor can come through into the flat below, so stopping the water fast limits damage to more than one home. If the flat’s own valve does not stop the flow, a block manager or freeholder may need to isolate a communal riser; where water is appearing in a shop or restaurant below, access may have to be coordinated across both premises. Our How to Find Your Stop Tap guide shows where to look and how to free a stiff one.
On arrival, the plumber normally checks the meter and stop valve, confirms whether the escaping water is from the pressurised cold supply, hot-water pipework, a heating circuit or a waste pipe, and identifies every affected flat or unit before opening anything. The first visit may end with a permanent repair, a temporary clamp, a capped section or one isolated appliance while parts, access or drying-out are arranged.
For a no-water complaint, first ask whether neighbours are affected, test the cold kitchen tap, check the internal stop valve and look for a Thames Water interruption. If neighbouring properties are also without water, the network route is more likely; if only one property is affected, the fault may be an internal valve, pipe or pressure problem. Electrical damage, a main-drain obstruction or extensive drying may require an electrician, drainage contractor or drying company as well as the plumber.
Who fixes what in Clapham
An emergency is one of the few jobs where the “where” decides who pays — and Clapham’s two-borough split adds a step.
Your own pipework and private drains — internal leaks and blockages serving only your property — are yours (or your landlord’s), and that’s where a verified emergency plumber is the right call. Public sewers and lateral drains are Thames Water‘s, and a blocked or overflowing public sewer goes to them on 0800 316 9800.1
If you rent, the emergency may be your landlord’s or association’s to handle, and the route depends on who that is. Lambeth Council tenants use the out-of-hours emergency line 020 7926 6666;2 Wandsworth Council tenants use the Joint Control Centre on 020 8871 8999;3 and MTVH residents, including much of Clapham Park, use 020 3535 3535, where the emergency line is open 24/7.4 Private tenants should contact the landlord or agent immediately, but should not delay an urgent make-safe where water, sewage or electrics present an immediate danger.
And if you smell gas, it isn’t a plumbing emergency in the first instance — leave the property and call the National Gas Emergency Service on 0800 111 999 from outside.5
Safety first
Water and electricity are the real emergency danger. If water is dripping near or onto sockets, light fittings, the consumer unit or wiring, keep clear and switch the electricity off at the consumer unit only if it’s safe and dry to do so — otherwise wait and keep everyone away. Switch off the boiler or immersion heater, and don’t use electrical appliances in a flooded area.
If you also smell gas or suspect a leak, follow the National Gas Emergency Service steps:
1. Don’t switch anything electrical on or off, don’t use a naked flame, don’t smoke, and don’t use a mobile near the suspected leak.
2. Open doors and windows if it’s safe to do so.
3. If the meter control valve is known and safely reachable, turn the gas off at the meter — unless the meter is in a cellar.
4. Leave the property if the smell is strong or you feel unwell.
5. Call the National Gas Emergency Service on 0800 111 999 from outside, and don’t go back in until a gas engineer gives the all-clear.5
Carbon monoxide is a colourless, odourless gas a poorly-running gas appliance can produce; its six main symptoms — headache, dizziness, nausea, breathlessness, collapse and loss of consciousness — mimic flu but without a fever.6 Keep a working audible CO alarm to BS EN 50291 in any room with a fuel-burning appliance.
Gas work is restricted by law. Water and wet work — a burst supply pipe, a leaking radiator — don’t need Gas Safe registration, but the gas boiler, its combustion and flue, and its gas pipework must be worked on by a Gas Safe registered engineer; ask to see the ID card.7
Find a verified emergency plumber by area
Clapham Old Town & Clapham Common (SW4) — period houses and converted flats where a leak often crosses between flats, and where the first task is isolating the right supply among shared services.
Clapham North & Clapham High Street (SW4) — dense conversions and flats above shops, where a fast make-safe protects the units below and access can mean reaching a shared service cupboard.
Clapham Park (SW2/SW4 edge) — MTVH-managed homes where an emergency routes through the association on 020 3535 3535 rather than a private call-out; confirm the individual building’s heating arrangement before treating a loss of heat or heating-water leak as an internal private-system fault.4
Abbeville, Clapham South & the SW11 fringe — family houses toward Clapham South, and Wandsworth-side addresses where the council routing changes — confirm the postcode.
What it costs
| Job (Clapham / SW4–SW12) | Typical indicative range | Notes |
|---|---|---|
| Standard first-hour call-out (daytime) | £60–£100 | Higher minimum for the first hour |
| Emergency / out-of-hours call-out | £120–£250+ | Nights, weekends, bank holidays |
| Make-safe / isolate a leak | £100–£200 | Stabilising before a full repair |
| Clear an emergency blockage | £90–£250 | More for jetting or a shared sewer |
| Repair after make-safe | quote-based | Depends on parts and access |
Editorial estimate only. These figures are not regulated rates, not market data and not a published cost survey — a general guide; actual quotes vary by job, access and time of day.
Clapham is inside the London ULEZ (24/7 except Christmas Day), so a non-compliant van may carry the daily charge.8 Clapham addresses are outside the central Congestion Charge zone, but use TfL’s separate postcode checker if the route enters central London.9 Charging rules can change, so check the current position.
Frequently asked questions
Turn off the internal stop tap to cut the supply, open the cold taps to drain down, keep clear of any electrics, turn off the boiler, and call a verified plumber. If the valve serves more than one converted unit or does not stop the leak, contact the block manager or freeholder so the communal riser can be isolated.
Check whether neighbours are affected, test the cold kitchen tap, make sure the internal stop valve is open and check Thames Water for an interruption. A street-wide loss is normally a network issue; one property alone points more towards an internal valve, supply or pressure fault.
Internal leaks and private drains are a plumber’s job; public sewers are Thames Water (0800 316 9800).1 If you rent, it may be the landlord’s — Lambeth 020 7926 6666, Wandsworth 020 8871 8999, or MTVH 020 3535 3535.2
The leak has to be stopped at its source, which means access to the flat above; in a converted or leasehold building that can need the freeholder or managing agent, and a verified plumber will help identify the source.
Yes for the make-safe and repair — see Burst Pipes. A burst main in the street is Thames Water’s.
Often the first job is to make the property safe — isolating and draining down, or a temporary repair — with the permanent fix following once parts, access or drying-out are sorted.
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Why verified plumbers — not a general directory
When water is spreading, the last thing you want is to gamble on whoever appears first in a search — so checking that a plumber is genuine, insured and contactable matters before the emergency, not during it.
Every listing 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 Clapham’s SW4 and SW12 postcodes before a profile is approved — and we keep an eye on customer feedback gathered from across the web. Where a job involves gas we confirm Gas Safe registration directly with the Gas Safe Register; for water and fittings work you can also look a plumber up on WaterSafe.
Listed plumbers pay a flat monthly fee to be listed. What that fee never buys is the verification itself — every listing is checked on the same terms — and there’s no per-enquiry middleman fee, so your enquiry goes directly to the plumber. Profiles may be suspended or removed if credentials lapse or credible concerns are raised; see the full verification process →.
Related areas
Verified plumbers across Clapham’s neighbourhoods and nearby areas, including:
- Abbeville
- Balham
- Battersea
- Brixton
- Clapham Common
- Clapham Junction
- Clapham North
- Clapham Park
- Clapham South
- Stockwell
Related services
Other verified plumbing services in Clapham:
- Burst Pipes in Clapham
- Leak Detection in Clapham
- Blocked Drains in Clapham
- Toilet Repairs in Clapham
- Tap Repair & Installation in Clapham
- General Plumbing in Clapham
- Bathroom Plumbing in Clapham
- Kitchen Plumbing in Clapham
- Washing Machine & Dishwasher Installation in Clapham
- Boiler Repair in Clapham
- Boiler Servicing in Clapham
- Boiler Installation in Clapham
- Central Heating Repair in Clapham
- Commercial Plumbing in Clapham
Related guides
- How to Find Your Stop Tap (London Homes)
- London Plumbing Costs & Compliance Guide 2026
- London Hard Water — The Complete Homeowner & Landlord Guide 2026
- London Landlord Plumbing Compliance Checklist 2026
A plumbing emergency in Clapham is a race against the water: find and turn off the stop tap, keep clear of electrics, and work out whether it’s yours, Thames Water’s, or your landlord’s before the repair. The verified plumbers here can make it safe and put it right.
Contact verified plumbers in Clapham ↑
Last reviewed: July 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 bodies cited on it — Thames Water, Lambeth Council, Wandsworth Council, Metropolitan Thames Valley Housing, the National Gas Emergency Service, the Gas Safe Register, NHS/nidirect, WaterSafe and TfL. Source links are provided within this page where relevant.
Sources & further reading
1. Thames Water — report a problem (0800 316 9800) — https://www.thameswater.co.uk/contact-us/report-a-problem
2. Lambeth Council — emergency contact numbers (020 7926 6666) — https://www.lambeth.gov.uk/about-council/contact-us/emergency-contact-numbers
3. Wandsworth Council — council tenants request a repair (020 8871 8999) — https://www.wandsworth.gov.uk/council-tenants-request-a-repair/
4. Metropolitan Thames Valley Housing — emergency repairs (020 3535 3535) — https://www.mtvh.co.uk/manage-your-home/repairs/emergency-repairs/
5. Gas Safe Register — what to do in a gas emergency — https://www.gassaferegister.co.uk/gas-emergency/what-to-do-in-a-gas-emergency/
6. NHS / nidirect — carbon monoxide poisoning symptoms — https://www.nidirect.gov.uk/conditions/carbon-monoxide-poisoning
7. Gas Safe Register — find or check an engineer (ID card) — https://www.gassaferegister.co.uk/
8. Transport for London — Ultra Low Emission Zone — https://tfl.gov.uk/modes/driving/ultra-low-emission-zone
9. Transport for London — Congestion Charge zone and postcode checker — https://tfl.gov.uk/modes/driving/congestion-charge/congestion-charge-zone