What are the two main types of plumbing drainage systems?

The two main types of plumbing drainage systems are classified as sanitary and storm drainage systems for several important reasons. Sanitary drainage systems are designed to handle the waste and wastewater generated from residential, commercial, or industrial facilities. They safely transport sewage and greywater to treatment facilities or septic tanks to prevent contamination and ensure public health.

On the other hand, storm drainage systems are specifically designed to manage surface runoff from rainwater and melting snow. These systems are crucial for preventing flooding and water accumulation in urban areas by directing excess water away from streets and structures.

Both systems are vital components of plumbing infrastructure, but they serve different purposes. Understanding the distinction between them is fundamental for plumbers, as it impacts system design, installation, maintenance, and compliance with local regulations.

The other classifications mentioned are not as comprehensive in defining the primary types of drainage systems. While residential and commercial systems refer to the context in which plumbing is used, and gravity and pressurized systems describe the mechanism of water flow, they do not specifically categorize the components of drainage systems as effectively as sanitary and storm systems do. Similarly, surface and subterranean systems do not encompass the functional aspects of how wastewater and stormwater are managed within plumbing systems.