Drains, interceptors, pump stations and grease traps for Basingstoke’s homes and businesses, and septic tanks and treatment plants in the villages around it.
Basingstoke is one of the largest towns in Hampshire, with big business parks, industrial estates, retail sites and housing estates built mostly since the 1960s. In town, our work is mainly commercial and drainage: interceptors and gullies, pump stations, grease traps and blocked drains.
The countryside around Basingstoke is very different. Villages such as Preston Candover, Dummer, Upton Grey, Mapledurwell and Ellisfield, and the farms between them, often rely on septic tanks, cesspits and treatment plants. Much of it is on chalk, which drains well but feeds the groundwater, and the River Loddon rises in the town.
One team covers both, from interceptor cleaning on an industrial estate to a treatment plant service at a farmhouse. Our crews are in Hampshire most days and we’re available 24 hours a day, 365 days a year.
Industrial estates, depots and business parks need their interceptors emptied and gullies cleaned to keep oil and silt out of the drains. Our jet/vac tankers do both, and every collection comes with a waste transfer note for your records.
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We clear blocked drains at homes, offices and commercial units with high-pressure jetting, and survey them with CCTV when a problem keeps coming back. You get a written report with photos.
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Pump stations are common on business parks and estates around Basingstoke. We service them on a schedule, test the pumps, floats and alarms, and come out 24/7 when one fails.
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In the villages around Basingstoke, we empty septic tanks and cesspits, and service and repair treatment plants. We’ll check the system while we’re there and tell you if anything needs attention.
Learn moreLocal knowledge
A big commercial town with a rural, chalk landscape all around it.
Interceptors and pump stations on commercial sites need regular maintenance and records. A planned contract keeps it simple.
The villages south of the town are largely on chalk, which feeds the groundwater. Near drinking water sources, new discharges to ground may need a permit.
Many of the town’s estates are now 50 years or more old. Ageing pipes, roots and shared drains are common causes of blockages.
Local to you
We cover Basingstoke and the villages of north Hampshire around it.
Basingstoke · town and neighbourhoods
Surrounding villages · where septic tanks and treatment plants are common
If you’re in or around Basingstoke, call with your postcode and we’ll confirm.
Why Basingstoke customers use us
Whether it’s an interceptor on an industrial estate or a cesspit near Ellisfield, here’s what you can expect.
SafeContractor, Achilles UVDB and RISQS approved, so we can get onto managed sites and meet your contractor checks.
Tanks, treatment plants, pump stations, grease traps and drains, all handled by one team.
Tankers from 2,000 to 4,000 gallons, jet/vac combination units, CCTV survey kit and confined space teams for pump station wet wells.
A waste transfer note with every collection, and a written report after surveys and services.
Emergency call-outs 24 hours a day, 365 days a year, with a real person answering the phone.
We’ve been emptying tanks and servicing systems since long before most of the kit on the market existed.
Checkatrade
From 134 reviews · Read them
From 63 reviews · Read them
Scores as of September 2026
★★★★★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.
Trevor M. Google review
★★★★★Had a very good experience with Clear Masters. They provide an excellent, professional service, friendly and helpful, on time as per the agreed price
★★★★★I have used this business for several years now and they have consistently provided outstanding service.. Every member of staff has been friendly, competent and professional. Very impressive.
How it works
The same simple process for planned maintenance, one-off jobs and emergencies.
Step 1
Call us or book online and tell us what you need. For commercial sites, let us know about inductions, permits or access in advance.
Step 2
We send the right vehicle for the job. It helps if:
Step 3
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
Tell us what you need and we’ll come back with a price, from a one-off visit to a maintenance contract. If something’s flooding, call us now.
Questions answered
The questions businesses and homeowners in and around Basingstoke ask us most.
Yes. We can set up a schedule for interceptors, gullies, pump stations and grease traps, with waste transfer notes and reports after every visit.
It should be inspected regularly, typically every six months, and emptied when oil or silt reaches the level the manufacturer specifies. We can inspect it and tell you.
Yes. We empty septic tanks and cesspits and service treatment plants in villages all around the town.
Possibly. If you’re close to a drinking water source, a new discharge to ground may need an Environment Agency permit. Check the rules on GOV.UK before you start.
Yes. We’ll clear the blockage and survey the drain with CCTV to find the cause, whether it’s roots, damage or something being flushed that shouldn’t be.
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.
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