Final answer:
Backup sewage in a storeroom is a serious public health emergency that requires contacting the local regulatory authority for assistance with cleanup and ensuring compliance with public health regulations.
Step-by-step explanation:
When sewage backs up in the storeroom of an operation, it is important to contact the local regulatory authority because this situation is considered to be a public health emergency. Such incidents can lead to the contamination of products and surfaces with harmful bacteria and other pathogens, making the environment unsafe. The local health department needs to be informed so they can assist with the cleanup, enforce public health laws, and ensure that the proper sanitary conditions are restored to protect public health.