True Color in water quality analysis is defined as:

True Color in water quality analysis specifically refers to the color that is present in a filtered water sample under standard conditions. This measurement focuses on the color derived from dissolved substances rather than from suspended solids or particulates. It is essential to filter the water to remove any particulate matter that could affect the color reading, thus providing an accurate representation of the true color originating from dissolved substances, such as colloids or vegetative extracts. This distinction emphasizes the importance of proper sampling methods in water quality assessment to ensure that the results reflect the actual dissolved pollutants or organic materials present in the water.