Grease traps, interceptors, pump stations, drains and flood water handled for businesses, managed sites and homes across Southampton.
Southampton is a port city, with docks, warehouses, industrial estates, a large university population and a city centre packed with restaurants and takeaways. Almost all of it is on mains drainage, so our work here is mostly commercial: grease traps, interceptors, gullies, pump stations and drain clearance.
Much of the city sits low beside the Test and Itchen estuaries, and some areas are built on reclaimed land. Drains on flat, low ground run slowly and silt up more easily, basements and chambers can take on water, and many commercial sites rely on pump stations to move waste and surface water.
We’re SafeContractor, Achilles UVDB and RISQS approved, so we can work on managed and contractor-vetted sites. Our crews are in Hampshire most days and we answer the phone 24 hours a day, 365 days a year.
From the city centre to the high streets of Shirley, Portswood and Woolston, food businesses need their grease traps emptied before fat sets hard in the drains. We empty traps on a regular schedule, outside service hours if you prefer, and leave a waste transfer note each time.
Learn more
Warehouses, depots, car parks and yards need their interceptors and gullies emptied and cleaned to keep oil and silt out of the drains. Our jet/vac tankers handle both and provide the paperwork for your environmental records.
Learn more
On low-lying sites, pump stations do a lot of work. We service them, test pumps, floats, alarms and control panels, clean the wet well with our confined space teams, and come out day or night if one fails.
Learn more
We clear blocked drains at shops, offices, student lets and homes with high-pressure jetting, and survey them with CCTV to find the cause. Landlords and managing agents get a written report to keep on file.
Learn moreLocal knowledge
A low-lying port city with a lot of commercial drainage.
Close to the estuaries, drains have little fall and silt builds up. Regular jetting on commercial sites stops small build-ups turning into blockages.
With so many food businesses, fat, oil and grease is a major cause of blockages. A well-maintained grease trap protects your drains and the sewer.
Shared houses and flats can see a lot of blockages. Clear records of drain condition help landlords deal with problems quickly.
Local to you
We cover the whole of Southampton and the surrounding towns.
Southampton · city and districts
Surrounding areas · businesses and homes we cover
If you’re anywhere in Southampton, call with your postcode and we’ll confirm.
Why Southampton customers use us
Whether it’s a grease trap in the city centre or a pump station at a depot, here’s what you can expect.
SafeContractor, Achilles UVDB and RISQS approved, so we can get onto managed sites and meet your contractor checks.
Tankers from 2,000 to 4,000 gallons, jet/vac combination units, CCTV survey kit and confined space teams for pump station wet wells.
Our engineers and most of our tanker drivers hold current confined space entry certificates, and the engineers carry the most common parts.
Emergency call-outs 24 hours a day, 365 days a year, with a real person answering the phone.
A waste transfer note with every collection, and a written report after surveys and services.
Tanks, treatment plants, pump stations, grease traps and drains, all handled by one team.
Checkatrade
From 134 reviews · Read them
From 63 reviews · Read them
Scores as of September 2026
★★★★★Turned up on time, cleared the blockage with little fuss and the lads who turned up were professional throughout
Chloe R. Google review
★★★★★Clearmasters have been emptying and servicing our treatment plant for the last 7 years and their service and quality of work is of a high standard. I would highly recommend them.
★★★★★Efficient, courteous, customer-facing. Would not hesitate to recommend to others.
How it works
The same simple process for planned maintenance and emergencies.
Step 1
Call us or book online and tell us about your site and what you need. Let us know about inductions, permits or access in advance.
Step 2
We arrive with the right vehicle and paperwork. It helps if:
Step 3
You get a waste transfer note for everything we take away and a written report after surveys and services. For planned maintenance, we’ll remind you when the next visit is due.
Free, no-obligation quote
Tell us what you need and we’ll come back with a price for a one-off job or a maintenance contract. If something’s flooding, call us now.
Questions answered
The questions businesses, landlords and homeowners in Southampton ask us most.
It depends on the trap’s size and how busy you are. Busy kitchens may need it every few weeks; quieter ones less often. We’ll suggest a schedule and adjust it as we see how quickly it fills.
Yes, for every collection. You’ll also get a written report after surveys and services.
Yes. We’re SafeContractor, Achilles UVDB and RISQS approved and used to site inductions and permits to work. Tell us what’s needed when you book.
Yes. We can pump the water out, then jet and survey the drains to see whether a blockage or defect is making it worse.
Yes. We work for landlords and managing agents across the city and can provide a report to keep on file.
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.
We're independently vetted and certified so you can trust who you're letting onto your site.
Health & safety pre-qualification accreditation, verifying our processes meet recognised safety standards.
Railway Industry Supplier Qualification Scheme — approved to work safely within the rail industry supply chain.
Utilities Vetting Database membership, confirming we meet the utilities sector's supply chain standards.
Vetted and approved under the local authority's trusted trader scheme for honesty and fair dealing.
Members of the National Association of Drainage Contractors, the UK trade body for the drainage industry.
Registered with the Environment Agency, so your waste is handled and disposed of fully within the law.
Keep the site, forms and online booking working, and protect them from spam.
Google Analytics: counts visits and shows us which pages are useful, so we can improve the site. On unless you switch it off. Not used for advertising.
Meta (Facebook) pixel: measures our Facebook adverts and shows our adverts to people who've visited our site.
CLEARMASTERS