CLEARMASTERS
Septic tanks and cesspits
We empty septic tanks and cesspits at Woldingham homes and farms, choosing a tanker that suits the drive. Before we leave, we tell you how the tank looked and roughly when it should be emptied again.
Learn moreWoldingham is a hilltop village on the North Downs in east Surrey, spread along wooded roads at the top of the hill and down into a long, quiet valley. Most of its homes are detached houses on big plots, and the parish keeps much of its countryside, from the woods and chalk grassland of Marden Park to farmland climbing towards Botley Hill.
The village grew after the railway arrived in 1884, when the station opened under the name Marden Park. Woldingham Garden Village, on the site of a former army camp, has its own distinct character. Many houses are connected to the sewer, while outlying properties, farm buildings, converted outbuildings and some homes in the valley use septic tanks, cesspits or treatment plants.
We look after private drainage right across the parish, with crews in east Surrey most days and phones answered 24 hours a day, 365 days a year.
Our Woldingham drainage and waste services
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Septic Tank & Cesspit Emptying
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Treatment Plant Servicing
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Treatment Plant & Pump Repairs
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Septic Tank Surveys
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Treatment Plant Installations
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Blocked Drains & CCTV Surveys
Learn moreMore about septic tank emptying and treatment plant servicing in Woldingham.
Woldingham &
the Downs
the Downs
Homes, farms
& outbuildings
& outbuildings
Plant servicing
& repairs
& repairs
Waste transfer
notes
notes
24/7
call-outs
call-outs
What we do for Woldingham customers
Treatment plant servicing
Treatment plants serve a number of the newer and rebuilt homes beyond the sewer. Our engineers service them every year, check the blower, pumps and alarm, and give you a written report for your records.
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Repairs and alarm call-outs
A sounding alarm or a smell from the plant usually means a part has failed. Our engineers carry the common ones and can often fix the fault on the first visit, day or night.
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Surveys for buyers and owners
Buying a house in Woldingham that isn’t on the sewer? A septic tank survey shows what system it has, what condition it’s in and whether it meets the General Binding Rules.
Learn moreLocal knowledge
Drainage around Woldingham: what to know
High chalk downland, big plots and a stream that only flows in some winters.
Surrey Hills National Landscape
Woldingham’s countryside is protected and much of the village is Green Belt. New drainage work may need planning permission, so allow time.
The Caterham Bourne
The Bourne rises in the upper Woldingham valley and only flows after very wet winters, when groundwater can sit close to the surface on the valley floor.
Large plots
Tanks and plants are often a long way from where a tanker can park. Tell us roughly how far, and about any gates or gradients.
Local to you
Areas we cover in and around Woldingham
We cover the whole of Woldingham parish and the downland villages around it.
Woldingham · village and nearby
- Woldingham
- Woldingham Garden Village
- Marden Park
- Botley Hill
- Tillingdown
Surrounding villages · on the North Downs
- Chelsham
- Farleigh
- Warlingham
- Tatsfield
- Titsey
- Chaldon
- Godstone
- Limpsfield
Not sure if we cover you?
Anywhere in Woldingham parish or on the Downs nearby, we can help. Ring with your postcode and we’ll book you in.
Nearby areas
Why Woldingham customers use us
Careful work on the Downs
Whether it’s a cesspit at a farm on the ridge or a treatment plant behind a family home, here’s what you get.
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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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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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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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We remember so you don’t have to
Regular customers get a reminder when their next empty or service is due.
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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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Day and night, all year
Emergency call-outs 24 hours a day, 365 days a year, with a real person answering the phone.
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
★★★★★Very prompt and efficient service and most helpful
Checkatrade review Checkatrade · CR3
★★★★★Very efficient and competitive service, driver and mate very helpful
★★★★★We use Clearmasters regularly for our cesspool emptying and can't fault them at all. Always friendly and professional, both on the phone and the drivers. Online credit card payment which makes life easy. Highly recommend.
How it works
What happens when you book
Simple and the same every time.
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Step 1
Tell us what you’ve got
Ring us or book online with the type of system you have, roughly where it sits on the plot and how a tanker gets to it.
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Step 2
We come out and do the job
We agree a day with you and pick the right tanker or engineer. It helps if:
- you tell us about steep drives, tight turns or weight limits on the way in
- gates are open or we have the code, and dogs or horses are kept away from the tanker
- tank lids and plant covers are uncovered and not hidden under lawn or planting
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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 Woldingham property
Let us know what you need and we’ll send a price. If something’s overflowing or an alarm is sounding, call us now.
- Free quotes for emptying, servicing and surveys
- Tankers sized for long drives and steep lanes
- Septic tanks, cesspits and treatment plants
Urgent?
03333 233566
Questions answered
Woldingham septic tank and drainage FAQs
What homeowners in and around Woldingham ask us most.
Does the Caterham Bourne affect drainage in Woldingham?
Only in very wet years. The Bourne rises in the upper part of the valley and is usually dry, but after a long, wet winter groundwater can rise high enough for it to flow. A soakaway low in the valley may drain slowly while that lasts.
Do you work at houses on the ridge towards Botley Hill?
Yes. We empty tanks and service plants right across the parish, including the higher ground along the ridge. Mention the access when you book.
I’m buying in Woldingham. How do I find out what drainage a house has?
Ask the seller, read the property information form and look for tank or plant lids in the garden. For certainty, book a septic tank survey before you exchange.
Can I put in a new drainage field on the chalk?
Often, as clean chalk drains well. Near a public water supply, a new discharge to ground may need a permit, and in the Surrey Hills planning rules can apply too. We can help you check before you commit.
Which rules apply to a septic tank in Woldingham?
The Environment Agency’s General Binding Rules: the tank must drain to ground through a drainage field and be emptied regularly. The full guidance is on GOV.UK, and we can survey your system if you’re unsure.
What if my tank overflows at the weekend?
Ring us. Someone answers the phone 24 hours a day, every day, and our crews are in east Surrey most days. The number is 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.