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0808 168 6028 (freephone)

About us

Enviro Sewage Treatment Services (ESTS) is a specialist sewage and wastewater treatment and management company with its head office near Aylesbury in Buckinghamshire.

We supply, install, maintain, service and repair all types of sewage treatment plant, wastewater treatment plant, septic tank, soakaway and pump station. The treatment plants we install and maintain range from the smallest units available (fewer than 6 people), up to very large units (several hundred people).

30 years experience

We have nearly 30 years experience in sewage and wastewater treatment and management, looking after both domestic and commercial customers. 


We are a Klargester Certified Installer, a C+L Approved Installer and an Approved Service Provider for Klargester, C+L and Titan, as well as being a recognised installer / service company for many other leading manufacturers.

Geographical reach

With a head office near Aylesbury, a lot of our work tends to be in the home counties, particularly Buckinghamshire, Oxfordshire, Northamptonshire, Hertfordshire, Berkshire, Warwickshire, Bedfordshire and London. However, we work throughout the UK mainland, with recent projects including locations as diverse as Bude in Cornwall, Prestatyn in North Wales, Carlisle in Cumbria, Pickering in Yorkshire, Dundee in Scotland and Whipsnade Zoo in Bedfordshire. 

Our values

Our business is based on long term relationships, both with private individuals and companies, many of whose sewage and wastewater systems we have looked after for over a decade. Add to that the fact that over 75% of all our work comes from personal recommendation and we are in no doubt about the importance of the way in which we operate and the values we maintain. For more information on the way we do business, please visit:

Way of working
Ethical policy
Environmental policy
Health & safety

As ever, but even more so in the current climate, a critical part of treating customers well is by offering them value for money and we strive as hard as we can to ensure that our prices are the most competitive on the market.

Free inspections

In line with this philosophy, in all but exceptional circumstances, we will come and inspect a unit free of charge. This includes assessing whether or not remedial work is likely to be covered by insurance and what the cost of such work would be. We will normally provide an estimate for insurance purposes free of charge and we have close relationships with a number of the leading insurance assessment companies.

Free commissioning

As part of our commitment to quality of installation, which is absolutely critical to a new sewage or wastewater treatment system, we automatically commission all units we install as well as commissioning free of charge any treatment plant that we have supplied, no matter who has installed it.

24 hour breakdown & repair service

We understand the impact a failed plant can have on both domestic and commercial customers and have a 24 hour breakdown and repair service to enable immediate response.

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