Gray water is defined as wastewater that comes from which sources?

Gray water is defined as wastewater that originates from domestic activities such as bathing, washing dishes, laundry, and similar household tasks. This type of water is distinct from "black water," which contains human waste and is typically associated with toilets and sewage. The sources of gray water are primarily sinks, showers, and washing machines, which means it generally contains fewer pathogens and can be reused for purposes such as irrigation and flushing toilets, making it environmentally friendly.

Gray water systems can help reduce overall water consumption by recycling water that would otherwise be wasted. This differentiation from sources of black water, industrial waste, and rainwater runoff underscores the importance of proper classification in wastewater management and conservation practices.