Treatment Plants

What is a Domestic Treatment Plant?

For dwellings without access to mains drainage, and where a septic tank may not be suitable, a domestic treatment plant can provide reliable, efficient and environmentally-safe sewage disposal.

Once the sewage has been treated the resulting water can be released into a soakaway area or alternatively be sufficiently clean to run off into a watercourse.

They are particularly suited to:

  • Individual domestic properties
  • Small developments (less than 25 properties)
  • Commercial or industrial premises
  • The upgrade of existing septic tanks

Domestic treatment plants are normally buried underground, where they are encased in concrete. The hole is then backfilled, after which only the plant’s lid remains visible.


  • No mechanical or electrical components within the plant
  • Typically they are low maintenance with low or minimal running costs.
  • Low level visibility with a lockable child-proof pedestrian duty cover – safe for children and pets.
  • Controlled ventilation – minimises risk of odour nuisance.