24/7 emergency call-outs, 365 days a year

Septic Tanks & Drainage in Horley

Septic tanks, treatment plants, pump stations and drains looked after in Horley and the villages around Gatwick, just down the road from our office in Smallfield.

Horley is home ground for us. Our office is in Smallfield, a couple of miles east of the town, and our tankers are based just over the county line in Copthorne. Our crews are in and around Horley most days of the week.

The town is on mains drainage, but the countryside around it is a patchwork of farms, cottages, equestrian yards and small hamlets on septic tanks, cesspits and treatment plants, from Charlwood and Hookwood to Outwood, Burstow and Horne. Newer estates on the edge of town often rely on pump stations, and the hotels, car parks and businesses around Gatwick need their gullies, interceptors and grease traps looked after.

All of it sits on Weald clay, which is heavy, slow to drain and prone to waterlogging. That shapes almost everything about private drainage here, from how often a tank needs emptying to whether a drainage field will cope in January.

Our Horley drainage and waste services

View all services
Next door to
our office
24/7
call-outs
Homes, farms
& businesses
Waste transfer
notes
Own tanker
fleet

What we do for Horley customers

01
A Clearmasters tanker emptying a tank at a rural property

Septic tanks and cesspits on the Weald clay

We empty septic tanks and cesspits at homes, farms and stables around Horley with tankers from 2,000 to 4,000 gallons. On heavy clay, keeping solids out of the drainage field is what keeps it working, so regular emptying matters more here than on lighter ground. We’ll tell you how often yours needs doing.

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02
A Clearmasters service van

Treatment plant servicing and repairs

Treatment plants are common around Horley, especially where old septic tanks have been replaced. Our engineers service them, carry the most common parts, and repair blowers, pumps and control panels when they fail. Being local, we’re rarely far away when an alarm goes off.

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03
A submersible pump being lifted out of a pump station

Pump stations on estates and business sites

Newer developments around Horley and business sites near Gatwick often depend on a pump station. We service them on a planned schedule, test the pumps, floats and alarms, clean the wet well, and come out day or night if one fails.

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04
Clearmasters engineers and vans at work on a commercial site

Gullies, interceptors and grease traps

Hotels, car parks, depots and restaurants around Horley and Gatwick need gullies and interceptors cleaned and grease traps emptied. We set up regular schedules and provide waste transfer notes for every collection.

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Local knowledge

Drainage around Horley: what to know

Heavy clay, low ground and an airport next door.

Weald clay

Clay drains very slowly. Drainage fields around Horley often struggle in winter, and a tank may need emptying more often than you’d expect.

The River Mole

The Mole and its streams run through low, flat land around the town. Wet ground and high water in winter affect soakaways and drainage fields.

Business sites near Gatwick

Car parks, hotels and depots should have interceptors and gullies cleaned regularly and keep records of each visit.

Local to you

Areas we cover in and around Horley

From the town out to the villages and hamlets around Gatwick, here’s where we work.

Horley · town and nearby

  • Horley
  • Smallfield
  • Hookwood
  • Salfords
  • Burstow
  • Shipley Bridge

Surrounding villages · where septic tanks and cesspits are common

  • Charlwood
  • Norwood Hill
  • Sidlow
  • Outwood
  • Horne
  • Newdigate
  • Leigh
  • Copthorne
  • Lowfield Heath
  • Ifield Wood
  • Rusper
  • Felbridge

Not sure if we cover you?

If you’re anywhere near Horley, we cover you. Call with your postcode and we’ll give you a date.

Call 03333 233566

Why Horley customers use us

Your local tank and drain team

Whether it’s a cesspit at a farm near Charlwood or a pump station on a new estate, here’s what you get.

  • 34 years in drainage

    We’ve been emptying tanks and servicing systems since long before most of the kit on the market existed.

  • We remember so you don’t have to

    Regular customers get a reminder when their next empty or service is due.

  • Trained engineers

    Our engineers and most of our tanker drivers hold current confined space entry certificates, and the engineers carry the most common parts.

  • Day and night, all year

    Emergency call-outs 24 hours a day, 365 days a year, with a real person answering the phone.

  • Paperwork done properly

    A waste transfer note with every collection, and a written report after surveys and services.

  • One call for everything

    Tanks, treatment plants, pump stations, grease traps and drains, all handled by one team.

What our customers say

★★★★★

Excellent service from start to finish. The team came out to empty our septic tank and were professional, efficient, and clearly knew exactly what they were doing. They arrived when expected, got the job done quickly and thoroughly, and left everything clean and tidy afterwards. It’s refreshing to deal with a company that provides such reliable service and takes real pride in doing the job properly.

Checkatrade review Checkatrade · RH6
★★★★★

Fantastic service, emptied cesspit. Turned up on time and was extremely thorough. Would recommend

Checkatrade review Checkatrade · RH6
★★★★★

Friendly, efficient and helpful, also gave good practical advice

Checkatrade review Checkatrade · RH10

How it works

What happens when you book

The same simple process for every job.

  1. Step 1

    Tell us what you’ve got

    Call us or book online and tell us what you have and what’s wrong, if anything.

  2. Step 2

    We come out and do the job

    We send a tanker, a jetting van or a service engineer, depending on the job. It helps if:

    • there’s firm standing for a tanker, as clay lawns and verges get soft in winter
    • tank lids and inspection covers are uncovered and easy to find
    • you tell us about narrow lanes, gates or livestock before we arrive
  3. 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.

Book online Call 03333 233566

Free, no-obligation quote

Get a quote for your Horley property

Tell us what you need and we’ll come back with a price. If something’s overflowing, call us now instead.

  • Free quotes for one-off jobs and regular work
  • Septic tanks, treatment plants, pump stations and drains
  • Local team based a couple of miles away
Urgent? 03333 233566

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Questions answered

Horley septic tank and drainage FAQs

What homeowners, farms and businesses around Horley ask us most.

Why does my septic tank seem to fill up so fast?

Around Horley, the clay often means the drainage field can’t take water away quickly, so the tank backs up and looks full. Sometimes it is full; sometimes the field is the real problem. We can empty it and check the outlet to see which.

Do you empty cesspits at stables and farms?

Yes. We empty cesspits and septic tanks at farms, equestrian yards and homes all around Horley, and can set up regular collections so you don’t have to remember.

How close are you to Horley?

Very close. Our office is in Smallfield and our tankers are based in Copthorne, both a few miles from the town centre.

Do you service pump stations on new estates?

Yes. We service pump stations for management companies and residents across the Horley area, and respond 24/7 if the alarm goes off.

Do you clean interceptors for businesses near Gatwick?

Yes. We inspect, empty and clean interceptors and gullies at car parks, hotels and depots, with waste transfer notes every time.

Can you come out at night?

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.

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