Which phases are distinguished in the performance qualification of a water supply system?

According to the EMA, the performance qualification (PQ) of a water supply system is divided into two phases: an initial phase and a long-term phase. According to the FDA Guide to Inspections of High Purity Water Systems, a distinction is even made between three phases. Phases I and II correspond to the initial phase.

[GMP Compliance Adviser, Chapter 5.D]

You can find out more about this topic:

The GMP Compliance Adviser is the world's largest knowledge portal for quality management in the pharma business!