What is one of the primary purposes of DWV systems?

One of the primary purposes of drain, waste, and vent (DWV) systems is to remove sewage and waste from buildings. This system plays a crucial role in managing wastewater efficiently, ensuring that it flows away from residential and commercial properties safely and effectively.

The components of a DWV system, including pipes, fittings, and vents, work together to transport waste from sinks, toilets, and other fixtures into the municipal sewer system or a septic tank. Proper functioning of a DWV system is essential for maintaining hygiene and preventing backflow and contamination. Furthermore, adequate venting is necessary to allow air into the system, which helps in maintaining proper flow and preventing traps from losing their water seals.

In contrast, while the other options—supplying fresh water, heating residential buildings, and storing rainwater—are important aspects of building systems, they do not relate directly to the core function of DWV systems, which is centered around the removal of wastewater and sewage.