The main goal of a facility survey in developing a water management plan is to __________ the water systems.

The primary objective of a facility survey when developing a water management plan is to identify the potential sources of Legionella and other waterborne pathogens within the water systems. This process involves a thorough examination of the plumbing infrastructure, including water heaters, cooling towers, and fixtures, to pinpoint areas that may encourage bacterial growth and proliferation. By identifying these risk factors, the management plan can be tailored effectively to mitigate the risk of contamination and ensure safe water quality.

The other options, while related to water management practices, do not align with the central goal of the survey. Inspection is a part of the identification process but does not encompass the full scope of recognizing risks. Repairing and replacing systems are actions that may occur later in the management plan but stem from the findings derived from identifying issues during the survey. Hence, focusing on identifying potential hazards is crucial for establishing an effective water management plan.