Sewage Treatment Plant Experts Essex

mantair servicesAs sewage treatment plant experts and insallers based in Essex, Mantair Ltd  provides Essex home and business owners with a complete design, installation and maintenance service and covers all matters relating to "off mains" drainage.

Throughout many rural areas of Essex, many properties, both domestic and commercial are not connected to "mains drainage" for the disposal of waste water.  As leading independent installers of sewage treatment plants and septic tanks, Mantair is ideally placed to provide Essex home and business owners with a sewage treatment system to meet their budget and site requirements.

Whether you are seeking a small domestic installation of a packaged sewage treatment plant, septic tank, septic tank conversion unit or merely require advice over the telephone, Mantair has a track record of service, experience and quality that sets us apart from the rest.  All projects are carried out in accordance with Environment Agency Regulations and Section H2 of Building Regulations.


0800 121 6786
01255 476 467





Featured Case Study

Location - New Build Project, Colchester, Essex.

Essex Mantair

Mantair Contracts Division was contacted by an Essex based developer who required a new sewage treatment plant to serve a development of three bungalows near Colchester in Essex. 

Project Summary

Mantair engineers worked closely with the client at the initial design stages of the project to ensure that the key objectives of the project would be achieved.

One of the issues regarding the proposed sewage treatment plant installation was the restricted access onto the building plots.  Access to the building plots was via a 6’8” wide stone track with fencing either side which restricted the size of machinery and the type of sewage treatment plant which could be used.  Consideration also had to be given to the required excavation depth as the foul drainage was to be 1.6 metres deep where it enters the sewage treatment tank.

After lengthy discussions with several UK sewage treatment plant manufacturers, Mantair recommended the installation of a 15PE (population equivalent) Platinum below – ground sewage treatment plant.   Using SAF (Submerged Aerated Filter) technology, this sewage treatment plant is energy efficient and completely odour free whilst having minimal visual impact on the surroundings.

Prior to any works commencing Mantair obtained approval from the Environment Agency and Building Control for the project.


Prior to any works commencing Mantair engineers scanned the proposed location of the new sewage treatment plant and areas where any excavations were taking place to ensure that no underground services were present. 


Essex Mantair Machinery  Essex Sewage Treatment Plant Essex Mantair Sewage Treatment Plant


The scope of the installation works included:

  • Installation of the sewage treatment plant in a suitably sized excavation 3.7 metres deep, including for a concrete base and backfill;
  • Locating the air blower within a Beehive blower housing - a purpose built housing designed to blend into the natural surroundings;
  • Provision of an RCD protected power supply to the Beehive housing;
  • Installation of the air main from the air blower to the sewage treatment plant;
  • Installation of a new pumped outlet to the boundary ditch;
  • Backfilling all excavations and leaving the area neat and tidy.


Essex Sewage Treatment Plant Excavation Essex Sewage Treatment Plant InstallationEssex Concrete Backfill



On completion of the ancillary works Mantair commissioned the sewage treatment plant, including setting of air valves, checking all pipe work joints and viewing the discharge into the final discharge chamber.

Mantair removed all machinery from site and left the garden area in a neat and tidy manner.


Providing sewage treatment plants in Essex

Mantair Contracts Division offers a comprehensive sewage treatment plant and septic tank service throughout Essex and provides the following services:


British Water Codes of Practice for Small Wastewater Treatment Systems


Flows & Loads 3 Sizing Criteria            Installation Guide                       Users Guide

British WaterBritish Water    Installation GuideClick to view the full digital publication online

            Click here to Download PDF                            Click here to Download PDF                         Click here to Download PDF


Click here to view a sewage treatment plant installation in Essex.

Click here to view a sewage treatment plant installation in Suffolk.


 For further information on Mantair's services e-mail [email protected]



0800 121 6786
01255 476 467






Based in Essex, our sewage treatment and drainage engineers work throughout all areas, including Basildon, Billericay, Braintree, Brentwood, Brightlingsea, Burnham on Crouch, Chelmsford, Chipping Ongar, Clacton on Sea, Coggeshall, Colchester, Danbury, Epping, Grays, Great Dunmow, Halstead, Harwich, Hockley, Ingatestone, Leigh on Sea, Maldon, Manningtree, Saffron Walden, South Woodham Ferrers, Southend on Sea, Thaxted, Thorpe Le Soken, Tiptree, Waltham Abbey, West Mersea, Witham and Wivenhoe