National Onsite Wastewater Recycling Association

Wastewater (or waste water) is water generated after the use of drinking water, fresh water, raw water, or saline water in a variety of deliberate applications or processes. Another definition of wastewater is "Used water from any combination of domestic, industrial, commercial or agricultural activities, surface runoff / storm water, and any sewer infiltration or sewer inflow". via Wikipedia ↗