Telephone Allerton for sewage problems Email Allerton for help with sewage problems

Allerton are the premier off mains drainage company covering sales, servicing, commissioning and repairs of all types of septic tanks, sewage treatment plant, sewage pump stations and soakaways.

We will:

  • Save you money.
  • Maintain your compliance with regulators.
  • Help you protect the environment.
  • Extend the life of your system.
  • Delight you.

Contact us and we will be happy to make a site visit free of charge. Or you can simply discuss issues with any of our knowledgable staff in the office.

COVID-19 - Please note that while we are making site visits, we will not enter the house. We would, however, appreciate a bucket of warm water, soap, and a towel to wash our hands. 

ALLERTON GROUND WATER TUBE (AGWT)

Contact our office to buy yours today!

£6 each*

Allerton Ground Water Tube Sketch Plan

The ideal solution for measuring your soakaway (drainage field) water levels.

Allerton Ground Water Tube

Learn more here.

*2 for £10, 3 for £14 (all prices include UK postage but exclude VAT)

Excellent service and attitude from staff

Mr B (Sewage treatment plant service and repair)

Many thanks for your kind and cheerful service

Mrs Potts (Sewage Treatment Plant Service)

A fantastic experience from quote to completion & considerably cheaper than competition

Mr Stokes, Surfleet (ConSept - New Installation)

 

We do specialised pump stations for awkward situations!

Need something very small, very shallow, or narrow? Need the inlet at the top? We can do that for you! Whatever your unique specification requirements, Allerton can accommodate!

 

 

Sewage Treatment Plant or Septic Tank?

You’ve got a failed septic tank system, what are your options?

  1. Replace the existing soakaway.
  2. Install a pump station, and the pump the effluent to a shallower soakaway.
  3. Convert the Septic Tank to a sewage treatment plant.
  4. Replace the Septic Tank with a sewage treatment plant and a soakaway.
  5. Replace it with Sewage Treatment Plant and pump to a shallow soakaway.
  6. Replace it with Sewage Treatment Plant and pump to the ditch.
  7. Replace it with Sewage Treatment Plant and simply gravitate to a ditch.
     

Having a product that works is a worthwhile investment for the long term. There are a variety of factors to consider such as:

  • the number of people on the system (Population Equivalent)
  • do you need to employ a pump
  • how much space and access is available for the installation
  • the work should be carried out by qualified British Water engineers

Septic Tank

If you will be discharging into a river, keep in mind that the Environmental Agency requires effluent to be discharged at 20 BOD (Biological Oxygen Demand). Read more about this process here.  A Septic Tank can only produce 200 BOD with the best conditions, so in this situation we recommend installing an Allerton ConSept inside the Septic Tank.

Sewage Treatment Plant

A sewage treatment plant is a great option for treating the effluent from your property. We have products for large and small buildings, plus everything in between. 

Septic Tanks vs Sewage Treatment Plant

The Allerton ConSept

The Allerton ConSept is the ideal solution for your septic tank conversion. The Allerton ConSept will convert your existing septic tank or cesspool into a fully functional sewage treatment system producing a final effluent that can be discharged into a watercourse or soakaway.¹

 

Why use the Allerton ConSept?

  • The Allerton ConSept utilises your existing septic tank so there's no need to install a heavy plant or new tank. Plus, it's quick to install which saves you time, money and disruption.

  • No moving parts inside the tank.

  • Installation within your existing septic tank means the Allerton ConSept cannot be seen or heard. However, the air blower remains outside the septic tank for easy maintenance.

  • Maintains water at correct level, keeping drains clear right up to the house.

  • Manufactured using high grade composite materials and non ferrous components means the Allerton ConSept does not corrode. This results in a long and trouble free life.

  • Aerobic process reducing smell and odours.

  • Low maintenance costs - Servicing once a year, desludging and emptying once every two years, Installation, Septic Tank Conversion Unit Servicing and Maintenance available.

  • Discharge to watercourse with permissions or to a soakaway.

  • Installation and commissioning by our British Water Accredited engineers included in package.

 

How our conversion unit works²

Allerton Septic tank conversion illustration, lincolnshire sewage treatmentAllerton Septic tank conversion illustration, lincolnshire sewage treatmentAllerton Septic tank conversion illustration, lincolnshire sewage treatment

The Allerton ConSept will convert your existing septic tank or cesspool into a fully functional Sewage Treatment Plant producing a final effluent that can be discharged into a water course or soakaway. (We can help with the Environment Agency permit) 

The raw sewage enters the septic tank which will become the aeration zone. Air blown from the Blower causes agitation in this area and breaks ups solids.

The Allerton ConSept is an aerobic treatment system and the bubbling air encourages the growth of aerobic bacteria. This is a huge improvement on traditional septic tanks which are anaerobic.

The space in the Allerton ConSept acts as a settlement zone, allowing fine solids to settle out. The treated effluent is lifted to the shallow sample chamber by syphonic action. From here the water can directly go to a water course, providing you have a permit from the environment agency.

Alternatively, the water can go into the existing soakaway as it now has a head of water to push it along the pipe and upwards into the top soil. From here it finds its way sideways and downwards.

The plug in the outlet pipe prevents water in the ground getting into the septic tank and manholes near the house. It separates the house from any groundwater so your drains will remain clear.

¹Discharge to watercourse or soakaway is subject to consent from the relevant authorities. ² ConSept illustration is not drawn to scale.

Download our Allerton ConSept Specifications

Allerton ConSept Specifications

Allerton reserves the right to alter the Allerton ConSept specifications and dimensions without notice.

 

Allerton Sewage Treatment Systems

 

Septic Tank Conversion Blog Posts

ukas-logo ccas registered

 

 

 

External Pump Chamber

If the location of the Diamond plant is on an incline, in a high water table area or a long distance away from the designated discharge point (ie: soakaway/water course/ditch) the final effluent may require pumping. Contact Us for help sizing your pump station.

The Diamond range can be specified with an EPC which can deliver up to 100 litres per minute of effluent at a head of 4m. 

The EPC can be simply retro-fitted and is easy to maintain.

What comes with the EPC?

  • The pump chambers are manufactured from high quality glass reinforced plastic
  • 240v, 0.25kw submersible pump, integral float switch with stainless steel internals
  • The External Pump Chamber is delivered complete with the pipework and valves pre-assembled in the tank, ready for immediate installation into the ground.
  • High-level alarm included.
  • 50mm MDPE Pipe outlet
  • Junction box included
  • Invert extension kits for the EPC available (optional extra)
  • Custom made dirty water pumping stations available on request
  • Pump Station Servicing and Maintenance, Installation and Commissioning service available by our highly trained engineers.

 

How does the EPC work?

As the level of the liquid rises in the chamber the integral float on the pump is activated, the pump starts and pumps the liquid out of the chamber until the pump float drops and the pump turns off.

The level of the liquid will again rise and the above sequence is repeated.

If the pump fails to pump, the liquid level will rise to activate the high level float and the high level beacon will be illuminated.

 

external pump chamber illustration

 

 

Best Seller

The allerton diamond dms Sewage units and sewage treatment plants

To see the full Diamond Range click here. Once a Diamond unit is installed, the treated water can be pumped or gravitated to a ditch or a soakaway. If the treated effluent needs to be pumped, we can provide a suitable pump station.

The DIAMOND 6

The DIAMOND 6 (our biggest seller) sewage treatment plant is designed with innovative features ensuring a reliable and effective means of treating effluent from properties not connected to mains drainage.

The sewage treatment plant is CE marked and has been tested in accordance with EN12566-3 making it fully compliant with UK building regulations, always make sure your new packaged sewage treatment plant has the CE marking.

The invert level is ideal for new builds and the replacement of existing tanks. The compact design of the units reduces installation and handling costs compared with other plants.

In Domestic applications serving population equivalents of up to 6 people.

 

Why use the DIAMOND 6?

    • No Odours

Does not require primary settlement tank of sewage where odours can occur.

    • Process performance guaranteed for lifetime of the plant*

Efficient, continuous bacterial digestion process means the plant will continue to perform.

    • Peace of mind

Simple design, reliable operation, minimal maintenance mean low running costs.

    • Fantastic value for money

Small air blower means low running costs.

    • Alarm beacon fitted

Unlike other units that charge extra for a warning beacon. The DIAMOND 6 comes complete with two warning beacons fitted to the all weather, air blower kiosk. One beacon alerts to the failure of the blower and another to a high water level so you will always be in control of the situation.

 

The Diamond Range 

Available with gravity and pumped outlets to suit all site appliactions

 

Diamond 11 Diamond 15 Diamond 20 Diamond 27
5-11 people 10-15 people 14-20 people 21-27 people
Allerton diamond 6 diagram Allerton diamond 6 diagram Allerton diamond 6 diagram Allerton diamond 6 diagram
    
 Diamond 35 Diamond 45 Diamond 55
 28-35 people 36-45 people 46-55
 Allerton diamond 6 diagram Allerton diamond 6 diagram Allerton diamond 6 diagram

 

Diamond Units  Dimensions 
Population Equivalent or  PE   6 11 15 20
Outside Diameter A   1.850m  2.070m 2.070m 2.070m
Total Height D  2.340m  2.620m 2.810m  2.810m
Inlet Invert Depth  630mm 760mm  780mm 780mm 
Population Equivalent or  PE   27 35 45 55
Outside Diameter A   3.300m  3.300m 3.300m 3.300m
Total Height D 3.350m 3.350m 3.720m  3.720m 
Inlet Invert Depth 570mm 570mm 580mm  580mm 
Outlet Invert Depths are 100mm below the Inlet Pipe on all units

All these units can be made with deeper inlets at the factory, adding 300, 600, or 1000 mm

The smaller units also have the option of an extension to the turret up to 460mm with or without the factory extension!

The Diamond sewage treatment plants are designed with innovative features ensuring a reliable and effective means of treating effluent from properties not connected to mains drainage.

They are CE marked and have been tested in accordance with EN12566-3 making it fully compliant with UK building regulations, always make sure your new packaged sewage treatment plant has the CE marking.

The Diamond 6 with 620mm invert level is ideal for new builds and the replacement of existing tanks. The compact design of the units reduces installation and handling costs compared with other plants. The Diamond 6 gravity outlet reduces lifetime running costs as the final effluent gravitates out of the unit to a receiving drainage field or watercourse.

In Domestic applications serving population equivalents of up to 11 people the Diamond 11 can produce a final effluent meeting consent standards of 20mg/l Biological Oxygen Demand, 30mg/l Suspended Solids and 20mg/l Ammoniacal Nitrogen.

The Diamond 6 is also an ideal wastewater solution for many commercial applications such as; offices, factories, bed and breakfasts and other rural businesses. For help sizing your commercial property needs please click here.

 The allerton Diamond 45 sewage treatment plant

Diamond 45

 

Why use the Diamond Sewage Treatment Plant (STP)?

  • No Odours

Does not require primary settlement tank of sewage where odours can occur.

  • Process performance guaranteed for lifetime of the plant*

Efficient, continuous bacterial digestion process means the plant will continue to perform.

  • Peace of mind

Simple design, reliable operation, minimal maintenance mean low running costs. And no moving parts in the unit.

  • The units can be extended up to 1000mm at the factory giving much deeper inlet depths.
  • Extensions of up to 460mm can easily added on site for the Diamonds 6, 11, 15 and 20.
  • Fantastic value for money

Small air blower means low running costs.

  • Alarm beacons fitted

Unlike other units that charge extra for a warning beacon. The DIAMOND Range comes complete with two warning beacons fitted to the all weather, air blower kiosk. One beacon alerts to the failure of the blower and another to a high water level so you will always be in control of the situation.

 

Allerton’s renowned customer service

All units come with a 25 year tank warranty, 2 year blower warranty and a lifetime process warranty*. Allerton offers a unique level of service drawing on 40 years of experience we can help with sizing your treatment plant, installation advice and offer a full installation service. Allerton offer servicing of the units and other manufacturers’ units so you can always rest assured your treatment plant is receiving the best care.

Excellent service and attitude from staff

Mr B (Sewage treatment plant service and repair)

Many thanks for your kind and cheerful service

Mrs Potts (Sewage Treatment Plant Service)

A fantastic experience from quote to completion & considerably cheaper than competition

Mr Stokes, Surfleet (ConSept - New Installation)