Atlantis 36 Person – 8400 Litre Shallow Dig Septic Tank

Save £608.40
Free Delivery | Customer To Offload | 1-2 Weeks
AtlantisSKU: TAN.SEP-36PE

£2,943.00 exc. VAT
Sale price£3,531.60 Regular price£4,140.00

Tax included



36 Person – 8400 Litre Shallow Dig Septic Tank – TAN.SEP-36PE

A 8400 litre plastic septic tank which is suitable to cater for up to 36 people. 

This robust storage tank is manufactured in the UK and is moulded from Polyethylene using a rotational moulding process which produces a stress-free product. 

The high strength ribbed design allows for environmentally friendly pea-gravel back-fills which as a result eliminates the need for the high costs and difficulties of encasing a tank in concrete. The shallow-dig depth also makes it easier to install and maintain, as well as being ideal for areas with a high water table (certain installations may require further advice and an alternative installation method). This range of tanks are amongst the most dependable in the market place and our industry-leading warranty offers extra peace of mind. 


  • Suitable for effluent discharge to drainage fields in the absence of mains drainage  
  • Innovative design made from lightweight rotational moulded HDPE  
  • Shallow dig  
  • Pipe inverts can be increased with the telescopic neck extension  
  • All pipework is 110mm as standard  
  • Includes Zoeller Residential Septic Tank Effluent Filter.  
  • The filter includes a patented bypass protection sleeve to keep solids in the septic tank during cleaning
  • 10 year warranty


  • Capacity: 8400 Litre
  • Length: 3970mm
  • Width: 2700mm
  • Height: 1725mm

Optional Extras:

  • Telescopic Neck - This Telescopic Neck & Seal is designed for the underground PuraTank range of tanks. It is used when the tank needs to be buried deeper than what the existing tank turret allows.   This telescopic neck will allow the user to extend the depth anywhere from 300mm to 800mm.  It can also be tilted 5 degrees either way.
  • Pedestrian or Vehicle Lid Cover

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