Sewage Treatment Plant Installers Essex

LogoFor sewage treatment plant installations and repairs throughout Essex, Mantair Ltd provides homeowners with a complete design, installation and maintenance service.

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 homeowners 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.

Sewage Treatment Plant Installation Essex


Case Study - 6PE Sewage Treatment Plant Installation in Essex.

Location - Chelmsford, Essex.

Mantair Contracts Division was contacted by the owner of a property located in the hamlet of Cooksmill Green, near Chelmsford in Essex.  The homeowner requested the services of Mantair to assist in the modernisation of a septic tank system.


On inspection of the foul drainage system serving the property it was evident that the existing septic tank discharged directly into a nearby roadside ditch.  On viewing the internal condition of the septic tank is was apparent that the structural integrity of the tank was impaired.

Using the Geological Survey Map of the Chelmsford Area, Mantair engineers were able to determine that the underlying sub-strata was predominately clay.  With the ground conditions being impermeable a replacement septic tank soakaway system would not operate correctly as the discharged liquids would be unable to percolate through the sub-strata.


Mantair recommended that the septic tank be replaced with a modern packaged sewage treatment plant, which would provide suitable treatment so that the final effluent would be acceptable and in accordance with the Environment Agency's requirements.

After discussing the clients concerns and requirements it was paramount that the new sewage treatment plant was both quiet and had minimal maintenance requirements.

Following the initial site survey and subsequent discussions with the client, Mantair recommended in accordance with the "Flows & Loads - 3" Code of Practice, the installation of a 6PE (population equivalent) packaged sewage treatment plant.

As part of the project Mantair liaised with the Environment Agency and the local Building Control Department to obtain the relevent approvals for the installation and the discharge to the roadside ditch.

Mantair Sewage Treatment Plant Installation Essex


Prior to any ancillary 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.

The scope of the installation works included:

  • Exposing the existing foul drainage pipe work and diverting to the location of the new sewage treatment plant;
  • Installation of the sewage treatment plant in a suitably sized excavation, 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 110mm diameter discharge drain to the roadside ditch;
  • tricel sewage treatment plantBackfilling all excavations and leaving the area neat and tidy.



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.


British Water Codes of Practice for Small Wastewater Treatment Systems


Flows & Loads 3 Sizing Criteria

British Water     british water

    Click here to Download PDF  


How Mantair Can Help You! 

Mantair offers a comprehensive sewage treatment plant and septic tank service throughout Essex. This includes free site inspections, guidance and advice on the most suitable system for the client's requirements, complete installation, commissioning and full after sales care.


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

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

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


For further information 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