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.