Blackwater

Blackwater is a relatively recent term used to describe wastewater containing fecal matter and urine. It is also known as brown water, foul water, or sewage. It is distinct from greywater or sullage, the residues of washing processes. Water coming from domestic equipment other than toilets (e.g. bathtubs, showers, sinks, washing machines) is called greywater and is usually kept separate from blackwater (which comes from toilets) to reduce the amo... more

Blackwater is a relatively recent term used to describe wastewater containing fecal matter and urine. It is also known as brown water, foul water, or sewage. It is distinct from greywater or sullage, the residues of washing processes. Water coming from domestic equipment other than toilets (e.g. bathtubs, showers, sinks, washing machines) is called greywater and is usually kept separate from blackwater (which comes from toilets) to reduce the amount of water that gets heavily polluted. Separation of blackwater and greywater nowadays happens with all ecological buildings. Especially in autonomous buildings, the separation is always present. It is also commonly used on recreational vehicles where separate tanks collect blackwater and graywater wastes. Blackwater contains pathogens which need to decompose before they can be released safely into the environment. It is difficult to process blackwater if it contains a large quantity of excess water, or if it must be processed quickly,... less