All new commercial kitchen grease interceptors must be connected to which?

The requirement for all new commercial kitchen grease interceptors to be connected to the building drain or sewer is critical for the effective management of wastewater. Grease interceptors are designed to trap fats, oils, and grease (FOG) from kitchen waste before they enter the main drainage system. This connection ensures that the undesired substances do not enter the municipal sewer system, which can lead to blockages and increased maintenance costs for wastewater treatment facilities.

Connecting grease interceptors to the building drain or sewer facilitates the proper flow of treated wastewater, maintaining compliance with local plumbing codes aimed at protecting public health and the environment. This system allows for the proper treatment and disposal of kitchen waste while ensuring that FOG is adequately removed.

In contrast, options such as connecting to the building storm sewer would be inappropriate, as storm sewers are typically designed for rainwater and do not handle wastewater that contains FOG. The other choices also do not pertain directly to the established requirements for grease interceptors under plumbing regulations, further reinforcing why connection to the building drain or sewer is the correct answer.