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Treatment Plant Servicing in Haywards Heath

Servicing, repairs and emptying for domestic and small commercial treatment plants in the villages around Haywards Heath.

Treatment plants are a common sight in the Mid Sussex countryside. You’ll find them at converted barns and stables, at new homes built on the edges of villages, and at older houses where a septic tank that once drained to a ditch has been replaced. A few serve small groups of houses or a business on a rural site.

Ardingly Reservoir, a South East Water supply reservoir, lies a few miles north of Haywards Heath, and streams across this part of the Weald run down to the Ouse. What a private system lets out into those streams matters, which is why the General Binding Rules expect plants to be kept in good order and desludged before they overfill.

We service plants from Cuckfield to Horsted Keynes. The parts that fail most often go everywhere with our engineers, a tanker can take care of desludging, and you get a written report after each visit, which is handy if you ever come to sell the house and the buyer’s surveyor starts asking questions.

What's included

Inside a treatment plant service

A thorough check of the air, the pumps, the panel and the sludge.

  • High-level alarm

    The alarm is tested so it will warn you if the plant starts to back up.

  • The final effluent

    We look at what’s leaving the plant, which is a quick guide to whether it’s treating properly.

  • Filters and media

    Where your plant has filters or media, we check they aren’t blocked or clogged.

  • Control panel

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

  • A written service record

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

  • Wear parts spotted early

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

Fixing faults and removing sludge

01
A Clearmasters service van at a customer’s property

When an old tank needs upgrading

Plenty of country homes around Haywards Heath were built long before today’s rules, and a few still send septic tank water into a ditch. That has to change, and the fix is normally a treatment plant, or in some gardens a properly sized drainage field. If you’re buying an older house, find out where its system discharges before you exchange contracts.

Where the ground is mainly sandstone, a new drainage field can work well. On the clay pockets, a treatment plant installation discharging to a stream is often the better choice.

Learn more
02
A Clearmasters service van

When a plant is beyond repair

Sometimes an old plant costs more to keep running than it’s worth, or it can’t meet the rules for where it discharges. If that’s the case we’ll say so, and we can quote for a replacement.

We install new treatment plants and drainage fields as well as servicing them.

Learn more

Local to you

Treatment plant servicing around Haywards Heath

We service treatment plants in Haywards Heath and the surrounding villages, including Cuckfield, Lindfield, Ardingly, Balcombe, Highbrook, Horsted Keynes, Scaynes Hill, Wivelsfield, Bolney, Ansty and Staplefield. Small developments and business sites sharing one plant are covered too, on a one-off or regular basis. See the full Haywards Heath area list.

Other services in Haywards Heath

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

★★★★★

Great service from the initial call to the guys that come out. And we’re at the house within 3-4 hours. That’s why we’ve always used them

Josh F. Google review
★★★★★

We use Clearmasters regularly for our cesspool emptying and can't fault them at all. Always friendly and professional, both on the phone and the drivers. Online credit card payment which makes life easy. Highly recommend.

Paul C. Google review
Read all our reviews

Free, no-obligation quote

Book a treatment plant service in Haywards Heath

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
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Questions answered

Your treatment plant questions answered

Does my septic tank near Haywards Heath need upgrading before I sell?

Where it discharges straight into a ditch or stream, the General Binding Rules require a replacement or upgrade, and when a house changes hands the buyer and seller should agree who does the work. Buyers’ surveyors will ask about it. A treatment plant is the usual answer.

My treatment plant alarm is going off. What should I do?

Cut your water use right down and call us. Don’t switch the plant off unless it’s unsafe. Most alarms mean a blower, pump or float has failed, and we can usually find the fault on the first visit.

Do you service my make of plant?

We service and repair the common makes, including Klargester, Conder, Marsh, Graf, Tricel and WPL Diamond. If you’re not sure what you have, send a photo of the lid or panel when you get in touch.

Is the countryside around Haywards Heath in a National Landscape?

Partly. The High Weald National Landscape covers much of the countryside north and east of the town, around Ardingly, Balcombe and Horsted Keynes. If you’re putting in a new plant there, check with Mid Sussex District Council whether you need planning permission first.

Does the blower need to run all the time?

On most plants, yes. The blower keeps air flowing to the bacteria that treat the waste. If it stops for long, the plant stops treating properly and can start to smell.

Do you install new treatment plants?

Yes. If your old plant or septic tank needs replacing, we can quote for a new treatment plant and, if needed, a new drainage field.

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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