Which of the following is NOT a characteristic of a Community Water System?

A Community Water System is defined by certain key characteristics that help categorize it as a provider of water to a specific community or population. One of the primary characteristics is that it serves a regular population, which could include stable residents in designated areas.

The classification does not inherently require that the system be managed by a municipal authority. In fact, many community water systems can be operated by various entities, including private companies or rural water supply corporations, thus bringing to light option B's incorrectness.

Mobile home parks can also be classified under community water systems, as they provide water to a defined group of residents. Furthermore, rural water supply corporations can also serve community water systems, further broadening the scope of what can be included in this category, which aligns with options C and D being valid characteristics.

In summary, the defining features of a Community Water System are its service to a regular population and its potential management by a variety of entities, illustrating that it is not limited to municipal authority control.