Gallery Hydraloop 1
Gallery Hydraloop 1
February 2019
Headquarters 8911 MA Leeuwarden, Nederland

Hydraloop - Residential greywater recycling system

Hydraloop is an in-house greywater recycling system that recycles 85% of mains water, reduces the sewage load and saves energy.

The technology works without using a filter, membrane or chemicals. The treatment system combines five technologies to remove dirt, soap and other particles from the water: sedimentation, flotation, dissolved air flotation, enforced skimming, and an aerobic bioreactor. During the final treatment, a 6th technology is used: disinfection using UV light. Hydraloop automatically cleans itself regularly without any end user interference & maintenance requirements are low. It only uses 20 Watts of electricity, resulting to ± 200 KwH/year. Consumers can decide & prioritise for which purpose they want to reuse their Hydraloop water. They can setup the Hydraloop for example to first supply reuse water for lavatory flushing & washing machine, but in areas where topping up a swimming pool with mains water or sprinkling a garden is not allowed, one can switch the Hydraloop supply for these purposes . All this will be done completely automatically based on the settings made in the Hydraloop App.

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Key features

  • Reduces emissions by 476 kg CO2 per year for a family of four.
  • Saves 86 000 liter per year for a family of four.


  • Saves 400kWh per year for a family of four.

Company Profile

Maturity Stage

  • Medium and large scale commercialization
  • Small scale commercialization
  • Initial market commercialization
  • Prototype testing in the real world
  • Prototype testing 1:1 in the lab

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