What is the importance of water quality in GMP?

• A. Water is a potential source of contamination; should be potable, meet regulatory specs, and monitored.
• B. Water is always non-potable and not monitored.
• C. Water quality is optional for sanitizers.
• D. Water must be boiled every hour.

Answer: (A)

Water quality is central to GMP because water can act as a vehicle for contaminants that affect product safety. Using potable water that meets regulatory drinking-water specifications and keeping it under ongoing monitoring helps prevent introducing microorganisms, chemicals, or particulates into products and into equipment surfaces. Monitoring provides evidence that the water system remains within approved limits and can promptly catch changes in quality before they impact the process. In practice, this means checking microbiological safety, residual disinfectant or sanitizing agents, pH, turbidity, and any relevant chemical parameters, since poor water quality can also interfere with sanitizers and cleaning effectiveness. Boiling water every hour isn’t a practical or required GMP practice, and claiming water quality is optional or that water is always non-potable contradicts the goal of limiting contamination risks.