Which term describes wastewater that has been treated for reuse?

• A. Potable Water
• B. Effluent Water
• C. Surface Water
• D. Water Harvesting

Answer: (B)

Effluent water describes wastewater that has been treated and prepared for reuse. After treatment, this water is suitable for non-potable applications such as irrigation, industrial processes, or toilet flushing, depending on the level of treatment and local regulations. It is not potable water, which would meet drinking-water standards and typically require more extensive treatment. Surface water is natural water found in rivers, lakes, and streams, not wastewater, and water harvesting refers to collecting rainwater. In irrigation practice, recognizing effluent as treated wastewater destined for reuse helps distinguish it from natural water sources and from drinking water.