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Sewage Treatment Plant Servicing in Guildford

Yearly servicing and repairs for sewage treatment plants at homes, barn conversions, farms and rural businesses around Guildford.

When a house near Guildford is built or rebuilt away from the sewer, a treatment plant is now the usual answer. You’ll find them at barn conversions, replacement houses on big plots, farms and livery yards, and at country businesses where an old septic tank was never going to cope with the numbers.

Some plants here were put in to replace a tank that no longer met the rules, while others arrived with a brand new home. Either way, they depend on moving parts. A blower that has run day and night for years, or a pump sitting in a wet chamber, will wear out in the end, and the first sign is often a smell or an alarm rather than anything you can see.

Our engineers service all the common makes around Guildford, test the blower and pumps, clean the filters and leave a written report for the property file. If the plant needs desludging, our tanker can do it on the same visit.

What's included

What our engineers look at

Each visit follows a full checklist and ends with a written record.

  • 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.

  • Lid and access

    The lid, seals and fixings are checked so the plant stays safe and watertight.

  • High-level alarm

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

  • Pumps and floats

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

  • Sludge levels measured

    We measure the sludge and arrange desludging when it’s due, often on the same visit.

Keeping your plant working

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A Clearmasters service van at a customer’s property

Plants that run into the Wey’s streams

Plenty of plants on the farmland around Guildford send their treated water to a ditch or brook rather than into the ground. Those streams feed the River Wey, which flows through the middle of the town. Under the General Binding Rules, a treatment plant may discharge to a watercourse, but only if it’s maintained to the maker’s schedule and the water coming out is properly treated.

A plant that has quietly stopped working can foul a ditch for months before anyone notices. A yearly service, with the outlet looked at each time, keeps you within the rules and keeps the ditch clean.

Learn more
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A Clearmasters service van

Staying within the rules

Treatment plants that discharge to the ground or to a watercourse must be maintained in line with the manufacturer’s instructions under the General Binding Rules, with the sludge removed regularly.

Your service record shows the plant has been looked after, which buyers and their solicitors often ask to see.

Learn more

Local to you

Treatment plant servicing around Guildford

We service treatment plants across the countryside around Guildford. That covers Wanborough, Puttenham, Compton, Seale, Normandy, Pirbright and Worplesdon to the west, and to the east, the Clandons, Send, Ripley and Ockham. Farms and livery yards along the Hog’s Back, out towards Flexford, are part of the same round. 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 treatment plant service in Guildford

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

Treatment plant questions

My plant near the Clandons discharges to a ditch. Is that allowed?

It can be. Under the General Binding Rules a treatment plant may discharge to a ditch or stream, as long as it’s serviced as the maker recommends and the watercourse normally flows all year. A septic tank on its own can’t discharge to a watercourse at all. If you’re not sure which you have, we can tell you on a visit.

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.

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.

Does a plant on the chalk around Guildford need extra care?

It needs the same yearly service, but the stakes are higher. Water sinks into chalk quickly, and the chalk of the North Downs holds drinking water. A plant that’s working properly does no harm. One with a failed blower can let poorly treated effluent reach the ground, so faults are worth fixing promptly.

My plant smells. What does that mean?

A healthy plant shouldn’t smell much. A strong smell often means the blower has stopped and the bacteria have died off, or the sludge is overdue for removal. Call us and we’ll check 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.

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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