Arizona Plumbing Practice Exam

Where is a sewer required for plumbing installations?

1. Only in residential buildings

2. Every building with plumbing fixtures installed

3. Only for commercial properties

4. In locations with a municipal sewer system

The correct answer is: Every building with plumbing fixtures installed

A sewer is required for plumbing installations in every building that has plumbing fixtures installed because proper drainage and wastewater disposal are essential for maintaining hygiene and preventing health hazards. All buildings equipped with plumbing fixtures, whether residential, commercial, or institutional, generate wastewater that must be directed away from the building to prevent contamination and ensure sanitary conditions. This requirement is based on plumbing codes and regulations, which dictate that facilities must be connected to an approved sewer system (either public or private) to manage waste appropriately. This ensures that waste does not accumulate on-site, which could lead to health risks and environmental issues. Other options might suggest limitations based on the type of building or the presence of a municipal system, but they do not consider the broader requirement that any building with plumbing fixtures must be connected to a sewer system to manage wastewater effectively.