According to the food code, which of the following is not part of managing wastewater in foodservice establishments?

Managing wastewater in foodservice establishments is crucial for ensuring food safety and environmental compliance. Among the options given, regularly testing water quality is not directly considered a part of managing wastewater. Instead, it pertains more to the management of potable water sources.

In contrast, disposing of sewage through an approved facility is a core aspect of wastewater management, ensuring that waste is handled in a way that is safe and compliant with regulations. Clearly identifying piping of non-potable water is also critical, as it prevents cross-contamination with potable water supplies, thereby protecting public health. Having air gaps that are at least the same diameter as the water supply inlet is a requirement to maintain a physical separation that prevents backflow, thus safeguarding the potable water from potential contamination.

The emphasis on wastewater management focuses primarily on disposal, identification, and prevention measures, while the regular testing of water quality, although important, is not a direct element of wastewater management as defined by food safety standards.