CLEARMASTERS
Basement pump stations
Basement kitchens, gyms and cinema rooms below the sewer depend on a pump. We service them, test floats and alarms and come out 24/7 if one fails.
Learn moreWimbledon has two very different centres. Up the hill, Wimbledon Village is large Victorian and Edwardian houses, many extended into basements, around a high street of restaurants and boutiques. Down the hill, the town centre and the streets towards Raynes Park and South Wimbledon are terraces, flats and busy shops.
Basements below sewer level need pumps, and those pumps need servicing. Mature trees on the Common and along the avenues send roots into old clay drains. The Beverley Brook runs along the western side of the area, and low ground near it can be slow to drain.
Our crews work in south-west London most days and we answer the phone 24 hours a day, 365 days a year.
Our Wimbledon drainage services
View all services
Pump Station Servicing
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Blocked Drains & CCTV Surveys
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Septic Tank Surveys
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Grease Traps & Commercial Waste
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Treatment Plant & Pump Repairs
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Flood & Groundwater Removal
Learn moreCovering
Wimbledon
Wimbledon
24/7
call-outs
call-outs
Homes &
businesses
businesses
Waste transfer
notes
notes
Own tanker
fleet
fleet
What we do for Wimbledon customers
Drain clearance and root removal
We clear blocked drains with high-pressure jetting and cut out roots from trees on the Common and in large gardens.
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CCTV surveys before building work
Before a basement, extension or purchase, a CCTV survey shows where the drains run and their condition.
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Grease traps for restaurants
Restaurants and cafés in the Village and the town centre need grease traps emptied regularly. We set up a schedule and leave a waste transfer note every time.
Learn moreLocal knowledge
Drainage in Wimbledon: what to know
Big houses, deep basements and old trees.
Basements
If your basement is below the sewer, it relies on a pump. Two pumps and a working alarm are strongly recommended.
Trees and roots
Mature trees send roots into old clay drains. Repeat blockages are often roots.
Beverley Brook
Low ground near the brook can flood after very heavy rain.
Local to you
Areas we cover in and around Wimbledon
We cover Wimbledon and the neighbouring parts of south-west London.
Wimbledon · and neighbourhoods
- Wimbledon
- Wimbledon Village
- Wimbledon Park
- South Wimbledon
- Raynes Park
- Merton Park
Surrounding areas · homes and businesses we cover
- Southfields
- Earlsfield
- Colliers Wood
- Morden
- New Malden
- Kingston Vale
- Putney
- Roehampton
- Tooting
- Mitcham
- Motspur Park
- Coombe
Not sure if we cover you?
If you’re in or around Wimbledon, we cover you. Call with your postcode and we’ll confirm.
Why Wimbledon customers use us
Careful work in larger homes
Whether it’s a basement pump in the Village or a blocked drain in Raynes Park, here’s what you can expect.
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Trained engineers
Our engineers and most of our tanker drivers hold current confined space entry certificates, and the engineers carry the most common parts.
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Day and night, all year
Emergency call-outs 24 hours a day, 365 days a year, with a real person answering the phone.
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Paperwork done properly
A waste transfer note with every collection, and a written report after surveys and services.
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The right kit for the job
Tankers from 2,000 to 4,000 gallons, jet/vac combination units, CCTV survey kit and confined space teams for pump station wet wells.
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34 years in drainage
We’ve been emptying tanks and servicing systems since long before most of the kit on the market existed.
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One call for everything
Tanks, treatment plants, pump stations, grease traps and drains, all handled by one team.
What our customers say
9.84/10
Checkatrade
From 134 reviews · Read them
4.9/5
From 63 reviews · Read them
Scores as of September 2026
★★★★★Clearmasters have emptied our Septic Tank for many years. It is not an easy placed tank to get to but the chaps manage perfectly. I find them very efficient, friendly and polite. Thank you Valerie Wise
Valerie W. Google review
★★★★★So glad we found them. The team was professional, courteous and helpful. They came the next day and pricing is way more competitive than a national chain. Will be using them again in a year's time to service the pump. Thanks again!
★★★★★We've been using Clearmasters for several years now and they've been great. We're in a tricky area to get to but they always make a plan without complaint. Great team! Highly Recommended.
How it works
What happens when you book
The same simple process for every job.
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Step 1
Tell us what you’ve got
Call us or book online and tell us what you need. If it’s a basement pump, tell us whether the alarm has sounded.
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Step 2
We come out and do the job
We send the right engineer or vehicle. It helps if:
- someone can show us the basement pump chamber and control panel
- access through the house is clear, and we know where the external manholes are
- you tell us if the alarm has sounded and when the pump was last serviced
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Step 3
Paperwork and the next visit
You get a waste transfer note for anything we take away, and a written report after a survey or service. If it’s a regular job, we’ll remind you when the next one is due.
Free, no-obligation quote
Get a quote for your Wimbledon property
Tell us what you need and we’ll come back with a price. If your basement is flooding, call us now.
- Free quotes for pumps, drains and surveys
- Basement pump servicing and repairs
- Grease traps for restaurants
Urgent?
03333 233566
Questions answered
Wimbledon drainage FAQs
What homeowners and businesses in Wimbledon ask us most.
How often should my basement pump be serviced?
At least once a year, more often if it serves a busy household or takes groundwater.
Why do roots keep blocking my drain?
Mature trees send roots into old clay drains through cracks and joints. Jetting and root cutting clear them; a survey shows if a repair is needed.
Should I survey the drains before digging a basement?
Yes. It shows where the drains run and their condition before work starts.
Do you empty grease traps in Wimbledon Village?
Yes, for restaurants, cafés and bars.
My basement pump alarm is sounding. What do I do?
Stop using water that drains to the pump and call 03333 233566.
Are you available out of hours?
Yes. We answer the phone 24 hours a day, 365 days a year. Call 03333 233566.
Got a different question? Call 03333 233566 or send us a message.
Fully accredited & compliant
We're independently vetted and certified so you can trust who you're letting onto your site.
SafeContractor
Health & safety pre-qualification accreditation, verifying our processes meet recognised safety standards.
RISQS
Railway Industry Supplier Qualification Scheme — approved to work safely within the rail industry supply chain.
Achilles UVDB
Utilities Vetting Database membership, confirming we meet the utilities sector's supply chain standards.
Trading Standards Approved
Vetted and approved under the local authority's trusted trader scheme for honesty and fair dealing.
NADC Member
Members of the National Association of Drainage Contractors, the UK trade body for the drainage industry.
Registered Waste Carrier
Registered with the Environment Agency, so your waste is handled and disposed of fully within the law.