A water system is designated a community public water system if it serves how many homes?

A water system is classified as a community public water system when it serves at least 15 service connections or 25 year-round residents. This designation is crucial because it indicates that the system is intended to supply water for human consumption and is subject to specific regulations to ensure water quality and safety.

In this case, choosing the option of 15 or more aligns with the definition outlined by the Environmental Protection Agency (EPA) and the AWWA. This threshold helps establish the responsibilities and standards required for public health protection. Understanding this classification is essential for those involved in water distribution management, as it determines the regulatory obligations the system must meet concerning water safety, testing, and reporting.