What does the term 'sewage' encompass?

The term 'sewage' encompasses all water-carried wastes from various establishments, which makes the choice referring to this definition the correct answer. This broad definition includes human waste, household wastewater, as well as waste from commercial and industrial sources.

Understanding this definition is crucial for those involved in septic system installation and maintenance, as it underscores the variety of materials that must be managed within a sewage system. The inclusion of all types of water-carried waste indicates the complexity of wastewater treatment processes and the importance of designing systems that can accommodate diverse waste streams to prevent pollution and ensure public health.

In contrast, the other options are limited in scope, focusing on specific types of waste which do not capture the full range of materials that can be classified as sewage. This comprehensive view is essential for effective septic system management and compliance with regulations.