Which of the following defines a sanitary sewer system?

The correct answer defines a sanitary sewer system as a comprehensive network designed specifically for the collection and transportation of wastewater, including sewage, from homes, commercial buildings, and industrial facilities to a treatment plant. This definition encompasses all components necessary for the effective conveyance of wastewater, ensuring that it is kept separate from stormwater systems to prevent contamination and maintain public health.

Option B is accurate because it emphasizes the entire system's function in conveying wastewater upstream of treatment facilities, which is essential for proper wastewater management. This full cycle is crucial for treatment processes that protect the environment and community.

The other options miss the mark for different reasons. While private homes might be connected to a sanitary sewer system, the description is too narrow and does not capture the full scope of municipal systems. Likewise, a network consisting solely of manholes does not constitute a sanitary sewer system, as additional piping and infrastructure are necessary for wastewater transport. Lastly, defining the system as one that serves only industrial facilities ignores the significant role that residential and commercial contributions play in the overall sewer system. By focusing solely on industrial facilities, this description is incomplete and does not reflect the diversity of connections within a typical sanitary sewer system.