CLEARMASTERS
Blocked drains and CCTV surveys
We clear blocked drains in Sutton’s houses and flats with high-pressure jetting and survey them with CCTV when the problem keeps returning.
Learn moreSutton is the London borough closest to our office in Smallfield, and our crews are here most days. It’s a mix of town-centre shops and restaurants, quiet suburbs in Cheam, Carshalton and Wallington, and new developments on former hospital and industrial land.
The north of the borough sits on London Clay, which shrinks and swells and cracks old drains. The south rises onto the chalk of the North Downs around Belmont and Banstead Downs, where a few homes on the very edge of London still have septic tanks or cesspits. The River Wandle rises around Carshalton, and low ground near it can flood.
We answer the phone 24 hours a day, 365 days a year.
Our Sutton drainage services
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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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Pump Station Servicing
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Septic Tank & Cesspit Emptying
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Flood & Groundwater Removal
Learn moreCovering
Sutton
Sutton
24/7
call-outs
call-outs
Homes &
businesses
businesses
Waste transfer
notes
notes
Own tanker
fleet
fleet
What we do for Sutton customers
Grease traps for the town centre
Restaurants and takeaways in Sutton, Cheam and Carshalton need their grease traps emptied regularly. We set up a schedule and leave a waste transfer note every time.
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Pump stations on new developments
Newer developments sometimes rely on pump stations looked after by management companies. We service them and respond 24/7 when one fails.
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Septic tanks on the downland edge
A few homes on the southern edge of the borough are off the mains. We empty septic tanks and cesspits and service treatment plants.
Learn moreLocal knowledge
Drainage in Sutton: what to know
Clay to the north, chalk to the south, and the Wandle.
London Clay
Clay shrinks and swells with the seasons, cracking old clay drains in the north of the borough.
The chalk downs
The south of the borough is chalk, which drains well but supplies drinking water.
The Wandle
Low ground near the river around Carshalton and Hackbridge can flood after heavy rain.
Local to you
Areas we cover in and around Sutton
We cover Sutton and the neighbouring parts of south London and Surrey.
Sutton · and neighbourhoods
- Sutton
- Carshalton
- Cheam
- Wallington
- Belmont
- Worcester Park
- Hackbridge
- Rosehill
Surrounding areas · including a few homes on septic tanks
- North Cheam
- Beddington
- Carshalton Beeches
- Banstead
- Mitcham
- Morden
- Ewell
- Stoneleigh
- Croydon
- Purley
- Coulsdon
- Epsom
Not sure if we cover you?
If you’re in or around Sutton, we cover you. Call with your postcode and we’ll confirm.
Why Sutton customers use us
The closest part of London to us
Whether it’s a blocked drain in Cheam or a septic tank in Belmont, here’s what you can expect.
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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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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.
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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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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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We remember so you don’t have to
Regular customers get a reminder when their next empty or service is due.
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
★★★★★I've used Clearmasters for at least 10 years and always find them reliable, helpful, knowledgable and great at what is a really unpleasant job! I won't use anyone else.
Nina C. Google review
★★★★★I have used Clearmasters now for 4 years and the service has been excellent. Very punctual on the day and their planning team have always been very helpful in finding convenient dates to service and maintain our pumps and tanks. I recommend.
★★★★★Very professional operation. Super clean tanker. Responded quickly to quote and booking requests. Arrived on time. Kept us notified throughout. Very pleasant and helpful guy operating the equipment. Gave sound advice with ongoing maintenance tips. Will definitely be saving Clearmasters' contact details to use them again.
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’s happening. If you’re not sure what kind of system you have, we’ll help.
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Step 2
We come out and do the job
We send the right van, tanker or engineer. It helps if:
- manhole covers are clear of cars, bins and planters
- there’s somewhere nearby for our van or tanker to park
- you tell us about shared drains or neighbours who are affected
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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 Sutton property
Tell us what you need and we’ll come back with a price. If something’s overflowing, call us now.
- Free quotes for drains, grease traps and tanks
- A short drive from our Smallfield office
- Written reports after every survey
Urgent?
03333 233566
Questions answered
Sutton drainage FAQs
What homeowners and businesses in Sutton ask us most.
How close are you to Sutton?
Sutton is the London borough nearest our office in Smallfield, and our crews are in the area most days.
Why did my drain crack after a dry summer?
London Clay shrinks as it dries, which can crack or shift old clay pipes.
Are there still septic tanks in Sutton?
A few, on the southern edge of the borough towards the Downs. We empty and service them.
Do you empty grease traps in Sutton town centre?
Yes, for restaurants, cafés and takeaways.
Do you service pump stations on new estates?
Yes, for management companies and residents, with 24/7 cover.
Can you come out today?
Call 03333 233566 and we’ll tell you when we can be there.
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.