CLEARMASTERS
Blocked drains and CCTV surveys
From flats in the town centre to family homes in Knaphill and Horsell, we clear blocked drains with high-pressure jetting and survey them with CCTV when the problem keeps returning.
Learn moreWoking is one of the biggest towns in Surrey, with a rebuilt town centre full of flats, offices, restaurants and bars, and suburbs spreading out to Knaphill, Horsell, Old Woking and West Byfleet. In town, our work is mostly drains, grease traps and pump stations, including those serving blocks of flats.
Around the edges, the countryside comes in quickly. Villages and hamlets such as Send, Ripley, Sutton Green, Mayford and the fringes of Chobham have homes and farms on septic tanks, cesspits and treatment plants. The sandy heaths around Horsell drain well, while the low land along the Wey towards Send and Old Woking can be wet.
Our crews are in the Woking area most days and we answer the phone 24 hours a day, 365 days a year.
Our Woking drainage and waste services
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Blocked Drains & CCTV 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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Treatment Plant Servicing
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Gullies & Interceptors
Learn moreCovering Woking
& villages
& villages
24/7
call-outs
call-outs
Homes &
businesses
businesses
Waste transfer
notes
notes
Own tanker
fleet
fleet
What we do for Woking customers
Grease traps for restaurants and bars
Woking’s town centre has a lot of restaurants, cafés and bars, and every kitchen needs its grease trap emptied before fat reaches the drains. We set up a schedule and leave a waste transfer note each time.
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Pump stations for flats and developments
Blocks of flats and newer developments sometimes rely on pump stations. We service them for managing agents and management companies and respond 24/7 when one fails.
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Septic tanks in the villages
Around Send, Ripley, Sutton Green and Mayford, we empty septic tanks and cesspits and service treatment plants. We check every system while we’re there and tell you if anything needs attention.
Learn moreLocal knowledge
Drainage around Woking: what to know
A big town centre, sandy heaths and the Wey valley.
Town-centre flats
Blocks of flats often have shared drains and sometimes a pump station. Managing agents should know who looks after them.
Sandy heaths
Around Horsell and Knaphill, sandy soil drains well, which suits soakaways but lets roots travel a long way to find drains.
The Wey valley
Low ground towards Send and Old Woking can be wet in winter, which affects drainage fields.
Local to you
Areas we cover in and around Woking
We cover Woking and the towns and villages around it.
Woking · town and nearby
- Woking
- Horsell
- Knaphill
- St John’s
- Old Woking
- West Byfleet
- Pyrford
- Goldsworth Park
Surrounding villages · including homes on septic tanks
- Send
- Send Marsh
- Ripley
- Sutton Green
- Mayford
- Westfield
- Brookwood
- Chobham
- Byfleet
- Mimbridge
- Bisley
- Worplesdon
Not sure if we cover you?
If you’re in or around Woking, we cover you. Call with your postcode and we’ll confirm.
Why Woking customers use us
One team for town and village
Whether it’s a grease trap in the town centre or a cesspit near Send, here’s what you can expect.
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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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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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Accredited for commercial sites
SafeContractor, Achilles UVDB and RISQS approved, so we can get onto managed sites and meet your contractor checks.
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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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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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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
★★★★★Our family have been using Clearmasters for years and are the only choice as far as we are concerned! All the staff are friendly, helpful and accommodating. Couldn’t recommend them highly enough!
Stu Google review
★★★★★I have used Clearmasters for years. They are always on time, polite and reliable whether your need them to empty your septic tank or undertake maintenance work. I wouldn’t use anyone else. Local and the best.
★★★★★Work carried out professionally as usual, the only company I'd recommend.
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. Managing agents: let us know how to access plant rooms and who to report to.
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Step 2
We come out and do the job
We send the right van, tanker or engineer. It helps if:
- there’s room to park a tanker close to the tank, trap or manhole
- lids, covers and hatches are clear and easy to find
- you tell us about narrow access, gates or site rules before we arrive
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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 Woking property
Tell us what you need and we’ll come back with a price. If something’s overflowing, call us now.
- Free quotes for one-off jobs and contracts
- Drains, grease traps, pump stations and tanks
- Reports for managing agents and landlords
Urgent?
03333 233566
Questions answered
Woking drainage and septic tank FAQs
What residents, businesses and managing agents in Woking ask us most.
Do you service pump stations for blocks of flats?
Yes. We service pump stations for managing agents and management companies, send a report after each visit, and respond 24/7 if one fails.
How often should a bar or restaurant grease trap be emptied?
It depends on the trap’s size and how busy you are. We’ll suggest a schedule and adjust it as needed.
Do you empty septic tanks around Send and Ripley?
Yes. Many homes and farms in the villages around Woking are off the mains, and we empty and service their systems.
Why do roots get into drains on sandy ground?
Sandy soil dries out quickly, so tree roots travel further looking for water, and drains are an easy source. A CCTV survey will show if roots are getting in.
Can you survey drains before I buy a flat or house?
Yes. A CCTV survey with a written report shows the condition of the drains before you commit.
Can you come out at night?
Yes. We answer the phone 24 hours a day. 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.