Black water in a sanitation context denotes wastewater from toilets, which likely contains pathogens.

Black water can contain feces, urine, water and toilet paper from flush toilets.

SOLVillion provides a solution through the decentralized waste water treatment system called DWWS.

 DWWS could be installed over or under ground treats the waste water to be reused for gardening and farming. The system is safe, locally manufactured, affordable, environmentally friendly, with no bad smell easy to maintain and easy to use.