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Septic Tank & Cesspit Emptying in Guildford

Septic tanks and cesspits emptied for homes, farms and businesses on the rural fringe of Guildford, from the Pirbright heaths to the Clandons.

Guildford’s town centre and suburbs drain to the public sewer, so our emptying work here is mostly out on the rural fringe. West of the town, the scattered houses and smallholdings around Normandy, Flexford, Wanborough and Pirbright often have a tank of their own. To the east, the Clandons, Send and Ripley have farmhouses and cottages at the end of long drives that were never joined up to the mains.

The ground changes a lot within a few miles. Worplesdon and Pirbright sit on Bagshot sand and open heath, which carries water away quickly. South of Worplesdon the London Clay is slow to drain, and the chalk of the Hog’s Back behaves differently again. Knowing which one you’re on helps explain why a tank fills, or a soakaway struggles, the way it does.

Book a single empty or put your tank on a regular round, and if it overflows at night, ring 03333 233566 whatever the hour. Each load goes for licensed disposal, and the waste transfer note is yours to keep.

What's included

What happens on the day

Every empty follows the same routine, whatever the size of the tank.

  • Inlet and outlet cleared

    Every tanker carries jetting kit, so a blocked inlet or outlet pipe can be cleared on the same visit.

  • Long hose runs

    We carry enough hose to reach tanks well away from the drive, through gardens and across paddocks.

  • A look before we start

    The operator checks the level and condition of the tank first, so anything unusual is spotted before the pump goes on.

  • Lids put back securely

    Covers are refitted and left safe, so there’s nothing for children, pets or livestock to fall into.

  • A reminder when it’s due

    If you’d like one, our office will get in touch when your next empty comes round.

  • Waste taken away legally

    Everything we remove goes to a licensed treatment site, and you get a waste transfer note for your records.

How often, and what it costs

01
Clearmasters tanker on a rural driveway, with its hose run through the garden to the tank

Sand on the heaths, clay further south

On the sandy heath around Pirbright and Worplesdon, a drainage field usually takes water readily. The catch is that the same open ground lets poorly settled effluent travel further, so keeping solids out of the field matters even more here. On the London Clay south of Worplesdon you get the opposite problem: fields stay wet all winter and the tank backs up after heavy rain.

If your field is giving trouble, it pays to look before anyone digs. A septic tank survey shows where the outlet runs and what state it’s in.

Learn more
02
Clearmasters tanker emptying an underground septic tank through an open manhole

Getting the tanker to your tank

Our tankers are big vehicles, so it helps to tell us about narrow lanes, weak bridges, low branches or soft verges when you book. We’ll send the right size of tanker and plan the hose run.

If the lid is buried under lawn or gravel, uncovering it before we arrive saves time on the day.

Learn more

Local to you

Septic tank emptying around Guildford

Our tankers work right round Guildford’s rural edge. That includes Worplesdon, Wood Street Village, Normandy, Pirbright, Wanborough, Puttenham, Seale and Compton to the west, and Shalford, Chilworth, West and East Clandon, Send, Ripley and Ockham to the south and east. See the full Guildford area list.

Other services in Guildford

We look after the whole system, not just one part of it.

Related services

Call 03333 233566

What our customers say

9.84/10

Checkatrade

From 134 reviews · Read them
4.9/5

Google

From 63 reviews · Read them

Scores as of October 2026

★★★★★

Pleasure to deal with this company. The are efficient and competitively priced

Checkatrade review Checkatrade · GU4
★★★★★

Clearmasters Ltd did a great job of servicing and emptying our sewage treatment plant. The team turned up on time, were very polite, efficient and gave me lots of advice on maintenance. The office team are extremely helpful also. I'd thoroughly recommend them.

Checkatrade review Checkatrade · GU10
Read all our reviews

Free, no-obligation quote

Book a septic tank or cesspit empty in Guildford

A few details about your tank and access are all we need to quote. For an emergency, ring us.

  • Free quotes, one-off or regular emptying
  • Our own crews and tankers
  • Emergency call-outs 24/7
Emergency? 03333 233566

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Questions answered

Your emptying questions answered

Is my house near Worplesdon or Pirbright likely to be on mains drainage?

Homes in the built-up parts are usually connected, but outlying houses, farms and properties on the edge of the commons may not be. Check your water bill: if Thames Water doesn’t charge you for sewerage, you probably have a private system. We can help you find the tank and tell you what it is.

Can you empty my tank in an emergency?

Yes, we take emergency call-outs 24 hours a day, 365 days a year. Until we arrive, cut your water use right down: no baths, showers, washing machine or dishwasher, and flush as little as possible. Then call 03333 233566.

Will emptying fix a smell from my tank?

Sometimes. If the tank is simply full, emptying it will help. If the smell comes from a blocked outlet or a failing drainage field, we’ll tell you what we find so you can put the cause right.

Can your tankers reach cesspits on farms along the Hog’s Back?

Usually, yes. Farm tracks around Puttenham, Seale and Wanborough can be narrow, rutted or gated, so tell us about soft ground and tight turns when you book. Our fleet ranges from smaller tankers for tight lanes up to 4,000 gallons, and each carries long hoses, so we can often empty a tank without driving right up to it.

My cesspit fills up very fast. Is that normal?

Cesspits fill quickly because nothing drains out. But if yours fills much faster than it used to, rainwater or groundwater may be getting in, or the tank may be damaged. A survey will find out which.

Should I add anything to my septic tank?

Generally no. A healthy tank works on its own bacteria. The best thing you can do is keep wipes, fat, oils and strong chemicals out of it and have it emptied regularly.

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.

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