Marsh Microbe Ensign Aboveground Sewage Treatment Plant - 4 Person Tank

Product Code:
Free UK Delivery
Est. Delivery: 5-7 Working Days
Shipping costs displayed in basket.
We can let you know when this product is back in stock.

This product is proving to be very popular and has unfortunately sold out.

Enter your email below and we'll notify you as soon as this product is back in stock:

Subject to stock availability, if products on a 24 hours service are ordered alongside products NOT on a 24 hours service, this may delay your whole order.

View Transport Policy

All delivery charges are included in the final shopping basket and are dependent on the products Scottish Highlands & the Islands where additional shipping charges will apply.

Please note that not all products will incur an additional delivery charge to the Scottish Highlands & the Islands – this is based on the costs from the manufacturer, distributor or courier providing shipping on our behalf. If your delivery address is in the Scottish Highlandsand Islands, a member of our helpline team will contact you prior to processing your order should an additional delivery charge apply.

While we make every effort to ensure orders are delivered by the date required, we cannot guarantee availability from the manufacturer or the manufacturer's delivery schedules.

Any variation to web delivery date given will be advised to you by email or telephone. If we are unable to make delivery because access is not possible, we reserve the right to make a failed delivery charge.

£2,216.40 Incl. VAT
£1,847.00 Ex. VAT
Oops! Please select from the options

Product Description

This product is supplied with a reinforced body and extra base supports so that it can be installed aboveground. Cad Drawing may differ slightly.

External Cabinet can be supplied free of charge, please state when ordering.

Package Sewage Treatment Plants (or PSTP's) are often a suitable option where groundwater in the surrounding environment is vulnerable, drainage field percolation values are restrictive, or direct discharge to watercourse or surface water sewer is the prefered discharge method. Marsh Industries ENsign range of sewage treatment plants treat final effluent to British and European Standards to allow it to be discharged back into the watercourse whilst reaching national consent standards. Our tanks can be manufactured with either a gravity or pumped outlet to meet your site requirements.

In addition to the anaerobic digestion taking place in the primary settlement tank (as septic tanks) the Microbe unit allows the clarified water to pass into a second 'aeration' chamber where it is treated to remove the dissolved constituents. Here aerobic bacteria, supported bu diffused air and mobile media, ensure full treatment is achieved before the treated effluent (and 'sloughed off' bacteria) flow to a final settlement chamber prior to discharge.

Microbe Benefits

  • As with Marsh’s larger Ensign range, the Microbe is designed to BSEN12566:3 to comply with latest environmental and Building Regulations requirements*
  • Minimum effluent quality of 20:30:20 (BOD:SS:NH4) ensures discharges are within national consent standards
  • Compact design for ease of handling, access and installation enables suitability for all site conditions including bedrock or high water table
  • Low energy compressor ensures minimal running, maintenance and servicing costs
  • Internal recirculation (from final to primary chamber) continues treatment process to provide higher effluent quality whilst balancing flow over 24 hour period or periods of intermittent use
  • Unique ‘keying-in’ lip to assist anchoring into granular or concrete surround
  • Optional extras include patented Polylok filter to further reduce suspended solids and extend life of drainage field; extensions for deep installations; pumped outlets for sites with adverse levels; and many more

* Whilst designed to same criteria, CE testing is only available to plants 6PE+

Advantages of using Marsh Tanks

  •     No moving parts
  •     Low running and maintenance costs (Approx. £52.00 per a 6PE)
  •     Easy installation with ‘keying-in’ lip and lifting eyes
  •     Tested and certified to BSEN12566-3
  •     50 year design life
  •     25 year structural guarantee

Marsh Microbe Ensign Aboveground Sewage Treatment Plant Specifications

Length: 1600mm
Width: 1332mm
Height: 1575mm
Inlet: 540mm 110mm dia
Outlet: 600mm 110mm dia
Hose Length: 4m 
Empty Tank Weight: 200kgs
Electrical Requirements: 13AMP Single Phase


Material GRP Capacity Domestic Operational Type Gravity Population 4 Person

Frequently Bought Together


Questions & Answers

There are currently no questions for this product.

Product Enquiry Form

Marsh Microbe Ensign Aboveground Sewage Treatment Plant - 4 Person Tank

*Required Field

Would you like to empty your basket?

Yes No


It seems you are running an older version of Internet Explorer. Our site does not support these old browsers as they do not house the technology that allows our site to be safe and secure.

If you wish to access our site please either upgrade your browser or download an alternative.