Residential waste is described as what type of wastewater?

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

Answer: (D)

Residential waste is sanitary/domestic wastewater because it comes from households and includes wastes from toilets, sinks, showers, and kitchens. This term specifically describes wastewater generated by home and domestic activities, distinguishing it from other sources like stormwater (rain runoff) or industrial wastewater. The other options describe treatment processes or types rather than the source: septic/anaerobic refers to on-site, oxygen-free treatment rather than the origin of the waste; aerobic/drainage points to a treatment method and drainage context rather than where the wastewater comes from; normal/regular isn’t a standard classification for wastewater sources. So the best fit for residential waste is sanitary/domestic.