How many people must a public water system serve to be classified under New Mexico regulations?

In New Mexico, a public water system must serve 25 or more people to be classified under state regulations. This threshold of 25 is important as it is the minimum number of individuals required for a water supply system to be deemed "public," ensuring that certain standards and regulations are met to protect public health and safety.

This classification aligns with guidelines set forth by the Environmental Protection Agency (EPA), which defines public water systems based on the number of people served. When a system serves 25 or more individuals, it indicates a need for comprehensive water quality monitoring, management, and reporting to ensure that drinking water meets health standards.

The other options represent higher numbers, which do not reflect the specific classification criteria set by New Mexico regulations for public water systems. Understanding this threshold is crucial for operators to ensure compliance with state and federal requirements.