Which phrase correctly describes residential wastewater?

Which phrase correctly describes residential wastewater?

• A. Normal/Regular
• B. Sanitary/Domestic
• C. Aerobic/Drainage
• D. Septic/Anaerobic

Answer: (B)

Residential wastewater is best described as sanitary or domestic because it comes from homes—toilet, bathroom, kitchen, and laundry waste—and is collected in sanitary sewers as sanitary/domestic waste. This terminology distinguishes it from stormwater runoff and most industrial effluents, focusing on the source as a household. The other phrases don’t fit: Normal or Regular is too generic and not a formal wastewater category; Aerobic/Drainage points to treatment methods or rainwater drainage rather than the type of waste itself; Septic/Anaerobic describes a specific treatment process (an anaerobic septic system) rather than the general nature of all residential wastewater, since not all homes use septic systems and many are connected to centralized treatment.

Residential wastewater is best described as sanitary or domestic because it comes from homes—toilet, bathroom, kitchen, and laundry waste—and is collected in sanitary sewers as sanitary/domestic waste. This terminology distinguishes it from stormwater runoff and most industrial effluents, focusing on the source as a household. The other phrases don’t fit: Normal or Regular is too generic and not a formal wastewater category; Aerobic/Drainage points to treatment methods or rainwater drainage rather than the type of waste itself; Septic/Anaerobic describes a specific treatment process (an anaerobic septic system) rather than the general nature of all residential wastewater, since not all homes use septic systems and many are connected to centralized treatment.