Septic tanks, treatment plants, drains and grease traps looked after for homes, farms and businesses in Romsey and across the lower Test valley.
Romsey sits on the River Test, with the town on mains drainage and a ring of villages around it that often aren’t. In places like Braishfield, Michelmersh, Mottisfont, Lockerley and the Wellows, many homes and farms rely on septic tanks, cesspits and treatment plants, which we empty, service and repair.
The ground here is different from the chalk further north. Around Romsey there are clays, sands and river gravels, and land close to the Test and its side streams can be low-lying and wet in winter. That can leave drainage fields struggling, and it’s why we look at where the water goes, not just at the tank.
In the town, pubs, cafés and restaurants need grease traps emptied and drains kept clear. We have tankers and engineers in Hampshire almost every day, and we cover Romsey for both regular work and emergencies, 24 hours a day.
We empty septic tanks and cesspits for homes and farms in the villages around Romsey, and check the outlet and baffles while we’re there. Where land is low and wet, a struggling drainage field is common, and we can advise on what can be done about it.
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A treatment plant needs a yearly service to keep it treating water properly. Our engineers clean and check the plant, test the blower and pumps, carry the common parts, and repair it when an alarm goes off.
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Romsey’s pubs, cafés and restaurants produce plenty of fat, oil and grease. We empty grease traps on a regular schedule that fits around your service, and leave a waste transfer note every time.
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From older properties near the abbey to newer estates on the edge of town, we clear blocked drains with high-pressure jetting. If the same drain keeps blocking, we’ll survey it with a camera to find out why.
Learn moreLocal knowledge
River gravels, clays and a protected river shape private drainage here.
Land near the Test and its streams can be waterlogged in winter. A drainage field in wet ground may stop working until the water table drops.
The Test is one of the country’s best-known chalk streams. A septic tank that discharges into a ditch or stream has to be upgraded under the General Binding Rules.
Test Valley Borough Council asks new homes to show they won’t add nutrients to the Solent. Building or converting? Ask about it before choosing your treatment plant.
Local to you
From the town centre out to the villages of the lower Test valley, here’s where we work around Romsey.
Romsey · town and nearby
Surrounding villages · where septic tanks and treatment plants are common
If you’re in or around Romsey, call with your postcode and we’ll tell you when we can come out.
Why Romsey customers use us
Whether it’s a treatment plant at a farm near Lockerley or a grease trap in the town centre, here’s what you can expect.
Tanks, treatment plants, pump stations, grease traps and drains, all handled by one team.
We’ve been emptying tanks and servicing systems since long before most of the kit on the market existed.
Our engineers and most of our tanker drivers hold current confined space entry certificates, and the engineers carry the most common parts.
A waste transfer note with every collection, and a written report after surveys and services.
Tankers from 2,000 to 4,000 gallons, jet/vac combination units, CCTV survey kit and confined space teams for pump station wet wells.
Regular customers get a reminder when their next empty or service is due.
Checkatrade
From 134 reviews · Read them
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
The same straightforward process for every job.
Step 1
Call us or book online and tell us what you need. For businesses, let us know the best time to attend and who to ask for when we arrive.
Step 2
We book a date that suits you and send the right vehicle. 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. If something’s overflowing, call us now instead.
Questions answered
What homeowners and businesses around Romsey most often ask us.
Near the Test, the water table can rise close to the surface in a wet winter. When the ground is already full of water, the drainage field can’t take any more. Emptying the tank buys time, and a survey can show whether the field needs work.
Yes, for homes and farms in the villages around the town. We’ll also check the tank and let you know if anything needs attention.
At least once a year. Most plants also need emptying about once a year, and we can arrange both on the same visit.
Yes. We can come early, before the kitchen gets busy, and we’ll set up a regular schedule so you don’t have to remember to call.
It can. Test Valley Borough Council expects new homes to show they won’t add nutrients to the Solent. That can affect what treatment plant you choose, so speak to the council early.
Our crews are working around the Test valley and south Hampshire most days. For an emergency, call 03333 233566 day or night and we’ll give you an arrival time.
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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