CLEARMASTERS
Interceptors for freight and port sites
Lorry parks, depots, garages and service stations need oil interceptors and gullies emptied and cleaned. Our jet/vac tankers handle both, with waste transfer notes for your records.
Learn moreDover is Britain’s busiest ferry port, squeezed into a valley between the white cliffs. Lorry parks, freight yards, depots and service stations around the port and along the A2 and A20 need interceptors and gullies cleaned to keep oil and fuel out of the drains, and that’s a big part of our work here.
The town is on mains drainage, with steep streets of older houses and drains that need clearing and surveying. On the chalk downs around it, villages such as St Margaret’s at Cliffe, Alkham, Shepherdswell, Eythorne and Lydden have homes and farms on septic tanks, cesspits and treatment plants. The chalk supplies drinking water, so those systems need to work properly.
We’re SafeContractor, Achilles UVDB and RISQS approved, our crews work in Kent most days, and we answer the phone 24 hours a day.
Our Dover drainage and waste services
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Gullies & Interceptors
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Blocked Drains & CCTV Surveys
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Septic Tank & Cesspit Emptying
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Treatment Plant Servicing
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Pump Station Servicing
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Septic Tank Surveys
Learn moreCovering Dover
& villages
& villages
24/7
call-outs
call-outs
Homes &
businesses
businesses
Waste transfer
notes
notes
Own tanker
fleet
fleet
What we do for Dover customers
Blocked drains on steep streets
We clear blocked drains at homes and businesses in Dover with high-pressure jetting and survey them with CCTV when problems keep coming back.
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Septic tanks on the downs
In the villages and farms on the chalk downs around Dover, we empty septic tanks and cesspits and check them every visit.
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Treatment plant servicing
Treatment plants on the chalk need to work properly to protect the groundwater. Our engineers service them at least once a year and leave a written report.
Learn moreLocal knowledge
Drainage around Dover: what to know
A port town on the chalk.
Freight and fuel
Sites with lorries and fuel need interceptors inspected and emptied regularly, with records kept.
Chalk and drinking water
The chalk around Dover supplies drinking water. Near sources, new discharges to ground may need a permit.
Kent Downs
Much of the countryside is in the Kent Downs National Landscape, where new drainage may need careful planning.
Local to you
Areas we cover in and around Dover
We cover Dover and the villages on the downs around it.
Dover · town and nearby
- Dover
- River
- Temple Ewell
- Whitfield
- Guston
- Buckland
Surrounding villages · where private drainage is common
- St Margaret’s at Cliffe
- Kingsdown
- Ringwould
- Capel-le-Ferne
- Alkham
- Lydden
- Shepherdswell
- Eythorne
- Coldred
- Martin Mill
- East Langdon
- Elvington
Not sure if we cover you?
If you’re in or around Dover, we cover you. Call with your postcode and we’ll confirm.
Nearby areas
Why Dover customers use us
Approved for freight sites, trusted by homeowners
Whether it’s an interceptor at a lorry park or a cesspit in Alkham, here’s what you can expect.
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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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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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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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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.
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. For port and freight sites, let us know about inductions and access.
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Step 2
We come out and do the job
We send the right vehicle and paperwork. It helps if:
- there’s space to park a tanker close to the tank, trap or manhole
- covers and pump station hatches are clear and easy to find
- we know about any site induction, permit or access code in advance
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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 Dover property
Tell us what you need and we’ll come back with a price. If something’s overflowing, call us now.
- Free quotes for planned maintenance and one-off jobs
- Interceptors, drains, septic tanks and plants
- SafeContractor, Achilles UVDB and RISQS approved
Urgent?
03333 233566
Questions answered
Dover drainage FAQs
What businesses and homeowners around Dover ask us most.
How often should a lorry park interceptor be emptied?
It depends on its size and how much oil and silt it collects. Many sites have them inspected every six months and emptied when needed.
Can you work on port sites with inductions?
Yes. We’re used to inductions and permits. Tell us what’s needed when you book.
Do you empty septic tanks around St Margaret’s and Alkham?
Yes. Many homes and farms on the downs are off the mains, and we empty and service their systems.
Does the chalk affect my septic tank?
The chalk drains well but supplies drinking water. Tanks and plants must work properly, and new discharges near sources may need a permit.
Do you service pump stations?
Yes, for homes, developments and commercial sites, with 24/7 cover.
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.