What must be documented if there is a change from a Cat 1 water to Cat 2/3?

Documentation of the reasons for the degradation of water from Category 1 to Category 2 or 3 is crucial because it provides a clear rationale for why the water's classification changed. This change typically indicates a shift in contaminants and safety concerns associated with the water. Documenting these reasons is essential for several reasons: it helps maintain a proper record for future reference, supports any necessary remedial actions, and provides justification for the decision-making process that led to the change in the water category. It also assists in informing all stakeholders of the risks involved, ensuring that adequate safety measures are implemented based on the new classification.

In contrast, while factors such as the time of day the change occurred, the color of the water, and insurance policy details might be relevant in certain contexts, they do not provide the same level of essential information regarding the source and nature of contamination that affects decision-making in the cleanup and restoration processes. Therefore, these factors do not hold the same significance in assessing changes in water catagories as the reasons for the degradation do.