What is the first step in evaluating the safety of a potential water system?

The first step in evaluating the safety of a potential water system is conducting a detailed sanitary survey of the water supply. This survey involves a comprehensive assessment of the water source, including its surroundings and potential sources of contamination. By examining the physical, chemical, and microbiological characteristics of the water as well as human activities in the vicinity, the survey provides critical information about potential risks to public health.

Conducting this initial assessment helps to identify vulnerabilities and gather baseline data necessary for evaluating the overall safety of the water system. It establishes the context for further steps such as testing for contaminants, consulting with regulatory agencies, and inspecting physical infrastructure. These subsequent actions are essential but rely heavily on the foundational understanding gained from the sanitary survey to address specific concerns more effectively.