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Treatment Plant Servicing & Repairs in Reigate

Yearly servicing, repairs and desludging for sewage treatment plants in the countryside around Reigate.

South of Reigate, a lot of old septic tanks have been swapped for treatment plants. On the clay around Leigh and Sidlow, many older tanks drained straight into a ditch, which the General Binding Rules no longer allow. A treatment plant cleans the water well enough to go into a ditch or stream legally, as long as it’s serviced and working.

Plants are also common at converted barns and stables, at newer houses built away from the sewer, and where a farmhouse and its cottages share one system. Some sit at the end of long private drives, so we check access before we set off. Shared systems also need a clear arrangement for who books and pays for the service.

Each service covers the air blower, diffusers, pumps and alarm, and you get a written report afterwards. Our engineers keep the parts that wear out most often on the van. If an alarm sounds, the plant starts to smell or the outlet looks cloudy, call us and we’ll send someone to find the fault and put it right.

What's included

What a service covers

Our engineers go through the whole plant, not just what you can see from the lid.

  • Blower and air supply

    We check the blower is running correctly and that air is reaching the diffusers, because that’s what keeps the bacteria working.

  • Outfall and drainage field

    We look at where the treated water goes, so problems with the outlet or drainage field are picked up early.

  • A written service record

    You get a record of the visit and our advice, handy for your files or when you sell the property.

  • Control panel

    We check the panel, its settings and any warning lights, and make sure it’s safe.

  • Pumps and floats

    Any pumps are run and tested, and floats are checked to make sure they move freely.

  • Wear parts spotted early

    Worn diaphragms, noisy bearings and tired pumps are flagged before they fail.

Keeping your plant working

01
A Clearmasters tanker emptying a tank at a rural property

Ditches that feed the Mole

The Wallace Brook drains much of Reigate and flows to the Mole, and many of the field ditches around Leigh and Sidlow end up there too. Treated water from a plant joins those streams quickly. When a plant is neglected, the discharge carries solids and smells into them. Over time that leaves grey deposits and a smell in the ditch, which neighbours and the Environment Agency tend to notice.

The simplest protection is a yearly service, plus desludging when the engineer advises it. If your control panel shows faults or keeps tripping, we also carry out control panel repairs.

Learn more
02
A Clearmasters service van at a customer’s property

Desludging

Every treatment plant builds up sludge, and it needs removing before it goes beyond what the plant can hold, usually at least once a year. Leave it too long and solids can carry over into the final chamber and out to your drainage field or watercourse.

We can desludge on the same visit as your service, using our own tankers.

Learn more

Local to you

Treatment plant servicing around Reigate

We service and repair treatment plants around Reigate, Leigh, Sidlow, Dawesgreen, Irons Bottom, Norwood Hill, Buckland, Gatton and Kingswood. We also look after plants on farms and at converted stables, and we can take over the servicing if your previous engineer has stopped coming. See the full Reigate area list.

Other services in Reigate

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

★★★★★

Clearmasters always carry out the periodic emptying of the septic tank, on time and with no inconvenience to ourselves. Invoicing is via e-mail with all the back up information provided. We have been using Clearmasters for many years and have never had any issues. Friendly, reliable people to deal with

Checkatrade review Checkatrade · RH1
★★★★★

Manhole overflowing to street. Arrived at site same day a few hours after my urgent phone call. Appropriate equipment (suction tanker) and knowledgeable and polite staff. All done in 30 mins for a very fair price. Would definitely use again.

Checkatrade review Checkatrade · RH1
★★★★★

Prompt and excellent service

Checkatrade review Checkatrade · RH1
Read all our reviews

Free, no-obligation quote

Book a treatment plant service in Reigate

A few details about your plant are all we need. If the alarm is sounding, call us now.

  • Free quotes for servicing and repairs
  • Engineers carry the most common parts
  • Emergency call-outs 24/7
Emergency? 03333 233566

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Questions answered

Treatment plant servicing FAQs

My septic tank near Sidlow drains into a ditch. What can I do?

Under the General Binding Rules, a septic tank can’t discharge straight to a ditch or stream. The usual fixes are a treatment plant, or a drainage field if the ground allows. On the clay south of Reigate, a treatment plant is often the practical choice. We can survey the system and talk you through it.

What’s the difference between servicing and emptying?

A service checks the mechanical and electrical parts: blower, pumps, floats, alarm and panel. Emptying, or desludging, removes the sludge that builds up. Most plants need both, and we can do them on the same visit.

How often should a treatment plant be serviced?

Most domestic plants should be serviced at least once a year, and some makers recommend every six months. Your plant’s manual will say, or we can tell you when we see it.

Does the clay around Reigate affect my treatment plant?

Not the plant itself, but it does affect where the treated water goes. Clay drains slowly, so an outlet to a soakaway can back up in winter. If the outlet chamber is full or the alarm trips after heavy rain, the discharge route probably needs looking at.

Is servicing a legal requirement?

If your plant discharges to the ground or a watercourse, the General Binding Rules say it must be maintained by someone competent in line with the manufacturer’s instructions. Regular servicing is the simplest way to show that.

Can I take over a plant when I buy a house?

Yes, and it’s worth booking a service soon after you move in, so you know its condition and get a fresh service record. Ask the seller for any manuals and past records too.

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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