What condition is defined as contaminants in a potable water system?

The condition defined as contaminants in a potable water system is indeed classified as unsafe potable water. When contaminants are present in water that is intended for human consumption, it poses potential health risks and breaches safety standards. This designation means that the water is no longer fit for use in drinking, cooking, or related applications.

When examining the other options, safe potable water refers to water that meets safety standards and is free from harmful contaminants. Filtered potable water is water that has undergone a filtration process to remove impurities but does not necessarily indicate contamination. Recycled potable water, while treated to meet health standards, also does not imply contamination. Understanding this classification emphasizes the importance of maintaining strict safety protocols in water systems to ensure public health.