Blackwater refers to wastewater that contains human waste, typically from toilets. It is considered highly contaminated and poses health risks if not treated properly. Blackwater is distinct from greywater, which is wastewater from sinks, showers, and washing machines that does not contain fecal matter. Proper management of blackwater is essential for environmental protection and public health. Treatment methods include anaerobic digestion and composting, which help break down the waste and reduce pathogens. After treatment, the resulting effluent can be safely released into the environment or reused for non-potable purposes, such as irrigation or industrial processes.