Frequently Asked Questions

1. Water details

  • What is greywater?

    Greywater is the lightly contaminated wastewater from bath, shower, and optionally from hand basins, and washing machines. Greywater should not be confused with blackwater. Blackwater is the wastewater from toilets, kitchen sinks, floor drains, and dishwashers.

    Hydraloop devices collect and treat greywater. Some Hydraloop models can also treat condensation water from air conditioning units, tumble dryers, and heat pumps.

  • What is Hydraloop reusable water?

    Hydraloop reusable water is greywater that has been treated in a Hydraloop device. It is suitable for toilet flushing, washing machines, garden irrigation, topping up swimming pools and cleaning purposes.

  • Is the treated water from a Hydraloop device safe?

    Yes. Hydraloop reusable water is clean, clear, and disinfected. The treatment technology has been tested and certified under the NSF-350 protocol and meets the most stringent international standards. Hydraloop reusable water should not be used for drinking, cooking, or personal hygiene. That means: do not use Hydraloop water in your kitchen, shower, bath, hand basin, bidet or hand shower. The reusable water from Hydraloop devices is suitable for toilet flushing, washing machines, garden irrigation, topping up swimming pools and cleaning purposes.

  • Can I drink the water from a Hydraloop device?

    No. A Hydraloop device does not produce potable water. The reusable water from Hydraloop devices is suitable for toilet flushing, washing machines, garden irrigation, topping up swimming pools and cleaning purposes.

  • How can I use the water from a Hydraloop device?

    The reusable water from a Hydraloop device is suitable for toilet flushing, washing machines, garden irrigation, topping up swimming pools and cleaning purposes.

  • Does a Hydraloop device produce drinking water?

    No, Hydraloop devices do not produce water that is safe to drink. Hydraloop produces reusable water for non-potable use. The reusable water is suitable for toilet flushing, washing machines, garden irrigation, topping up swimming pools and cleaning purposes.

  • Can Hydraloop treat greywater from hand basins?

    Hydraloop H600 device can treat greywater from hand basins (not from kitchen sinks). Hydraloop Concealed and Hydraloop H300 device cannot treat greywater from hand basins (nor from kitchen sinks). 

  • Can a Hydraloop device treat rainwater?

    No, it cannot. The tank size of Hydraloop devices is designed for daily input of shower/bath water. Rainwater can fall in large volumes and the storage capacity of Hydraloop tanks are not designed for these volumes.

  • Can I combine the reusable water from a Hydraloop device with a rainwater tank?

    Yes, you can. Some Hydraloop owners use this combination and have brought down their tap water consumption from 150 liter per person per day to 15 liter per person per day.

    A Hydraloop device can be connected to a rainwater system in two ways:

    • As a backup source for the Hydraloop device instead of tap water. In this case, the rainwater must be pre-treated with filtration and disinfection, since rainwater can come into contact with many different surfaces. 
    • To transfer surplus reuse water into the rainwater tank.
  • Can a Hydraloop device replace a rainwater tank or reduce its size and costs?

    Yes. At Hydraloop, we believe that rainwater should contribute to the hydrologic cycle. Rainwater should flow into the ground, not into the sewer. Using Hydraloop reusable water both inside and outside, and rainwater only outside, you are reusing water in the most sustainable way. When you own a Hydraloop device, you can choose a rainwater tank for irrigation only, because you are using the treated Hydraloop water for toilet flushing and the washing machine. If you recycle more greywater than you use inside the building, the Hydraloop device can pump the surplus to a rainwater tank. This way, you add Hydraloop reusable water for garden irrigation. 

  • Can I use the water from a Hydraloop device in my bathroom?

    No. The treated water from greywater recycling devices should not be used for personal hygiene purposes. That means: do not use Hydraloop reusable water in your shower, bath, hand basin, bidet or hand shower. The reusable water from Hydraloop devices is suitable for toilet flushing, washing machines, garden irrigation, topping up swimming pools and cleaning purposes.

  • Can I use the water from a Hydraloop device in my kitchen?

    No, the treated water from a Hydraloop device is non-potable water. You should not use it for preparing food or drinks, or for doing dishes. The reusable water from Hydraloop devices is suitable for toilet flushing, washing machines, garden irrigation, topping up swimming pools and cleaning purposes.

  • Can I use a grease trap or grease interceptor to recycle greywater from my kitchen in a Hydraloop device?

    No, you cannot. Hydraloop devices are not designed nor suitable to recycle kitchen greywater. Even after passing a grease trap or grease interceptor, kitchen greywater is too dirty for greywater treatment in a Hydraloop device.

  • Can I use the water from a Hydraloop device for my vegetable garden?

    Yes, Hydraloop reusable water is completely safe for growing crops.

  • Can a Hydraloop device handle hard water?

    Yes. Hydraloop devices can treat greywater with any hardness. If your tap water contains a lot of calcium, we recommend descaling your Hydraloop device every six months with 500 cl (1 pound) of citric acid. 

  • Can a Hydraloop device treat greywater that contains a lot of calcium?

    Yes. Hydraloop devices can treat greywater with any hardness. If your tap water contains a lot of calcium, we recommend descaling your Hydraloop device every six months with 500 cl (1 pound) of citric acid.