Septic Tank Problems?

Mantair are market leaders in septic tank problems and providing off mains drainage solutions.

Solving septic tank problems since 1987.

From humble beginnings in 1987, Andrew Skilling started a small family business designing and installing bespoke waste water treatment systems for rural dwellings without access to mains drainage. Since then, Mantair has grown to be one of the most established and recognised brands in solving domestic septic tank problems and installing sewage treatment systems.

Find out more about Mantair

Septic Tank & Sewage Solutions

Standing the test of time for over 30 years, Mantair are one of the UK’s leading independent septic tank and sewage treatment plant specialists, with experience in all forms of septic tank problems. View our portfolio.

Septic Tank Problems

If you’re experiencing problems with your septic tank or require a repair, help is at hand with Mantair. We’ve been inspecting, repairing, converting and updating septic tank systems for over 25 years. If you are experiencing any type of septic tank problem, please don’t hesitate to get in touch.

Septic Tank Problems

Septic Tank Regulations

As of January 2015, new rules for septic tanks were introduced, concerning their use and how these systems are regulated. These rules were introduced by DEFRA and the Environment Agency, and are referred to as ‘General Binding Rules’ to be strictly enforced by January 2020.

Septic Tank Regulations 2020

Septic Tank Conversions

The Septic Tank Conversion Unit by Mantair is a sewage treatment system specifically designed to fit within an existing septic tank or cesspool, effectively converting the existing tank into a small sewage treatment plant producing a clear, odourless and harmless effluent.

Our Septic Tank Conversion Unit

Septic Tank Installation

Our ‘in house’ contracting division provides a professional service in the field of wastewater treatment products, including design, installation and commissioning of septic tanks, septic tank conversions and sewage treatment plants, for both commercial and domestic customers.

Septic Tank Installation

Septic Tank Insurance

The cost to repair or replace a damaged drainage system may be covered by your existing buildings insurance and Mantair works in partnership with the UK’s leading drainage insurance claims management company to simplify your claims process via a unique insurance claims management service.

Septic Tank Insurance

Sewage Treatment Plants

Sewage treatment plants produce a level of treatment that allows the resulting effluent to be discharged directly into ditches, streams and rivers. Providing a modern alternative to septic tanks, these systems are the preferred choice for regulators.

Sewage Treatment Plants

Don’t just take our word for it…

We always love to hear feedback from our customers. Here is what our customers have to say about Mantair.

Mantair Ltd

5.0

Based on 90 reviews

review us on

Peter Phillips

10:25 23 Sep 24

As our septic tank drainage field had failed we contacted Mantair and their response was excellent. A very informative site visit led us to have a conversion unit fitted to the septic tank with a new drainage field. The work was done on time with minimum disruption to our lives and both the two engineers and the electrician were very pleasant, informative and helpful. Can highly recommend this company based on our experience.

mandy platten

13:22 29 Jul 24

Contacted Mantair around 18 months ago to discuss replacing an old septic tank with a sewage treatment plant. My experience is that Mantair are professional, arrive when they say they will and are always very helpful. Mantair arranged absolutely everything. The work was completed very efficiently, with respect for our property. Had an issue over winter with the pump. Mantair came out quickly and fixed the issue. Just had the first 12 month service. Again, representative arrived promptly and, as always, professional and courteous. Great service!

Z S

08:01 24 Jul 24

In my experience it is very hard to find contractors that are trustworthy, reliable, professional, competent and knowledgeable. Mantair absolutely fits all that category! It took me a very long time to find suitable contractors to install my new system. James and all of his staff are an extension of him, “professional”. I’m very grateful to him as he resolved a major issue I had with my old system which was installed in clay soil and no drainage outlet. Now I have a fully functioning system with no issues and I know i will have the ongoing maintenance support for if and when I require my system to be serviced or maintained. Big thank you James I sincerely mean every word!

Peter Collinson

15:28 04 Jul 24

A fantastic job by James, Sam and Luke. Very professional, knowledgeable and courteous. A pleasure.

Rich Craigs

18:24 05 Jun 24

Fabulous annual maintenance service experience as per last 3 years 🙌😎

Chris Exelby

18:08 20 May 24

The installation went exceptionally well. The planning was meticulous and best of all the two 'Sams' on-site were positive, upbeat, competent and consultative throughout, a credit to their company. The job was completed on time and we are thrilled with the result. They went to great lengths to ensure we were happy with the cosmetic results as well as the technical ones (eg topsoil and re-seeding, matching gravel shades on the drive etc.) A working sewage system, enabling us to enjoy hot baths and flushing the loo without worry! We have no hesitation in recommending Mantair.

Berenice Fenn

20:54 15 Jan 24

In November 2023 we had a Tricel treatment plant installed by Mantair and found them to be excellent in every way. They handled a difficult job on an SSSI site in trying weather conditions. The company handled the permission required from the Environment Agency. Their installers, Ryan and Sam were very helpful and friendly and worked really hard to get the job done. They made a great job of clearing up after they had finished and supplied new gravel for our car parking area and even re-seeded our lawn! We wouldn't hesitate to recommend Mantair to anyone considering a new system, they are a very professional company to deal with. Very happy customer.

Pat Bowen

17:15 08 Dec 23

After having a problem with my septic tank I gave mantair a call to see if they could help, I spoke to Kevin and we quickly arranged a day for an on site meeting to discuss any works to be carried out. Kevin quickly diagnosed the problem and advised me of the work needed. A very genuine person and company which I have no hesitation in recommending.

Susan Williams

09:46 04 Dec 23

Drove all the way from Essex to North Wales to install a new system on my septic tank. Exceptional Service from Sam & Luke. Polite, Courteous, Helpful and Friendly. Nothing too much trouble for them and they left the area they were working in immaculate. Explained to me how the system worked and answered all my questions without me feeling stupid or a bother to them. I can not recommend this company enough - from start to finish from the planner to the installation ABSOLUTELY FANTASTIC. Can not recommend enough. Thank you guys very, very much.

Steve Delarre

15:34 27 Nov 23

Had a new system installed just a few weeks ago. The discharge pump has failed for the second time. To be fair Mantair got an engineer out on the next working day and he investigated and corrected the issue. Fingers crossed.

Denise Davies

07:46 24 Nov 23

Mantair fitted a treatment plant in our septic tank. The service was brilliant from first contact to completion of works. Everyone involved was professional and a pleasure to meet. Would highly recommend.

Kevin Duff

13:59 13 Nov 23

Superb service in site assessment of our current septic tank and advice after inspection. Kev from Mantair was able to come and inspect the same day we called and the information he provided was professional, clear and very informative. We highly recommend Mantair after seeing work undertaken at a neighbours property and also our direct contact.

the firs

11:43 19 Oct 23

Mantair replaced the failing septic tank at our Care home last month. We've been hugely impressed with their service from the starting point of surveying the site and quoting to the stage of installation and completion. We'd like to say a big thank you to everyone at Mantair especially Steve and Ryan who were superb and made the whole experience hassle free for what seemed to us such a massive job.

Sarah Volkert

10:16 14 Jun 23

Mantair are a first class team to work with. We had to replace a failed and shared communal drainage system servicing 8 homes, with a new drainage field and Sewage Treatment Plant. From start to finish Mantair were very responsive, professional, communicative, helpful, knowledgeable and reliable. Throughout, they handled all enquiries from the various homeowners and management team, as well as liaised with all the relevant organisations, building control, EA etc. The quality of work was excellent. It was a large, challenging and complex project to co-ordinate. The installation was delivered on time and the finish even included grass seeding! I would highly recommend Mantair and their team, Matt, James, Nicola, Rowan, Sam x 2 and the rest of the team who helped us.

The Mantair Septic Tank Conversion Unit

The Mantair septic tank conversion unit is ideal for situations where the existing septic tank is discharging untreated effluent to a watercourse, or where a soakaway has failed.

The Original Septic Tank Conversion System

The Mantair conversion unit is a sewage treatment system specifically designed to fit within an existing septic tank or cesspool, effectively converting the existing tank into a small sewage treatment plant producing a clear, odourless and harmless effluent.

Find out more about our Conversion Unit

” The Mantair conversion unit is designed to treat domestic sewage and to achieve a final effluent standard that complies with the Environment Agency’s requirement ”

Sewage Treatment Plants

Sewage treatment plants are used in areas of the UK where mains drainage is inaccessible and provide a modern alternative to septic tank systems.

Independent Supplier & Installer of Sewage Treatment Plants

Our in house team of engineers are extensively experienced in all packaged sewage treatment plant processes. We are able to tailor a sewage treatment system to each individual property.

Find out more about Sewage Treatment Plants

Other Drainage and Septic Tank Services

From soakaways to replacement septic tanks and site inspections, Mantair have the experience to find a solution for you.

Septic Tank Soakaway

Every septic tank should have a soakaway / drainage field connected to the outlet of the tank.

A soakaway / drainage field is used for the disposal of the overflow from a septic tank into the sub-strata.

Find out more about septic tank soakaways

Replacement septic tank

Designed to be installed completely below ground, spherical septic tanks provide a traditional solution to sewage disposal needs for domestic dwellings. However, many authorities in the UK prohibit their use and in most instances a Sewage Treatment Plant should be considered as the first option.

Find out more about Sewage Treatment Plants

Free site inspections

If you have a septic tank problem or requirement for a new sewage treatment plant installation throughout the following Counties, contact us for a free site inspection and assessment:

Bedfordshire, Berkshire, Buckinghamshire, Cambridgeshire, Essex, Hertfordshire, Kent, Norfolk, Oxfordshire, Northamptonshire, Suffolk, Surrey and Sussex.

Get in touch today