The wastewater from a toilet or latrine flushing is referred to as

The wastewater generated from a toilet or latrine is commonly referred to as black water. This term denotes water that contains human waste, making it biologically hazardous and requiring careful handling and treatment to prevent health risks and environmental contamination.

In contrast, gray water refers to wastewater from sinks, showers, and laundry that does not contain significant amounts of human waste, while green water typically denotes rainwater that is absorbed into the soil and used by plants. The term red water is not a standard classification in wastewater terminology. Therefore, identifying toilet wastewater as black water accurately reflects its composition and the necessary precautions needed for its management.