Harrington Concrete & Quarries
HydroKlenze Biological Wastewater Treatment
HydroKlenze system installed in rural single dwelling


The Harrington HydroKlenze precast concrete tank can be quickly and easily installed without the need for concrete bases or concrete backfilling. The installation location should adhere to local planning authority requirements, whilst allowing for convenient access, routine maintenance and desludging.

The installation will require groundworks for the sewer line and percolation area to be prepared by a building contractor, and a 3 core SWA 2.5mm2 (armoured cable) from a fuseboard to be installed by a registered electrician.

For new build residential properties Harrington Concrete can liaise with your building contractor and electrician to provide any information required. For upgrades to existing properties with no building contractor or electrician in place we can provide a list of recommended contractors with experience installing the HydroKlenze system in our Contact Us section.

When all groundworks are ready, Harrington Concrete will deliver the HydroKlenze system to the site and place into the prepared hole. Our technicians will then connect the services and commission the plant*, which can be up and running in approximately 2 hours.

*A registered electrician will need to be present at the installation to comply with the Electrical Regulatory Safety Scheme www.SafeElectric.ie.

A well installed HydroKlenze system will provide:-

  • Neat and unobtrusive appearance
  • Efficient gravity-fed operation
  • Low maintenance
  • Reduced desludging
  • No foul odours


Installation guidelines

  1. The excavation required is a 3m x 3m hole with a level compacted hardcore base.
  2. The depth of the excavation, approximately 2.5m minimum, must take into account the level of the waste outfall pipe from the house and the gradient of the connecting pipe line to be installed to the inlet on the Harrington HydroKlenze tank.
  3. The inlet of the Harrington HydroKlenze tank has an invert of 1.5m. (See diagram in specifications section)
  4. The main body of the tank (3 tonne) is lifted into the hole, orienting the inlet to receive the waste outfall pipe and the outlet to the discharge pipe leading to the percolation area.
  5. The lid section (1 tonne) is then placed onto the tank, lining up the marking on the lid to the marking on the tank. This will ensure correct placement of the lid, permitting adequate access into all chambers for desludging. Backfill the excavation with the onsite spoil removing any heavy boulders.
  6. The blower housing is then installed on the main lid section beside the hole in the access riser.
  7. The air hose in the tank is connected to the blower via the hole in the riser.
  8. The power supply is terminated into the weatherproof double socket unit in the blower housing. All electrical installations must be carried out by a qualified electrician, to a recognised national code of practice.

For more information or specific installation queries, please contact our head technician John Gilmartin on 087 6725902 or email jgilmartin@harringtonconcrete.ie.

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