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Septic Tanks




Certified Septic Tank

A septic tank system typically consists of 2 tanks / chambers that allows for waste water from a dwelling house to settle out so as to remove suspended solids and for the liquid waste to gravity feed or to be pumped to a soil percolation area.

EN 12566-1 Cert | The Molloy Precast AswaSep Septic Tank is certified to European standard and suitable for use in Ireland. Septic Tank systems are used in conjunction with secondary treatment systems which further treat effluent prior to percolation. Septic Tank systems are used as holding tanks and are emptied periodically. We provide a variety of Septic Tank System sizes and specifications for individual project requirements. If it is not a Septic Tank system you require and your local authority has specified a Sewage Treatment System, please click here.


Aswasep® S
  Volume: 6200 litres
Drawing number:
Sep-S-00
  • Simple installation, no concrete back fill required
  • Certified to EN 12566-1
Aswasep® S+
  Volume: 7000 litres
Drawing number:
Sep-S+-00
  • Simple installation, no concrete back fill required
  • Certified to EN 12566-1


If it is not a Septic Tank system you require and your local authority has specified a Sewage Treatment System, please click here.

How it works

How the Aswaflow System works