Mold Assessment Technician Practice Exam

Which type of water can cause health issues due to microorganisms?

1. Potable water

2. Sanitary water

3. Gray water

4. Distilled water

The correct answer is: Gray water

The type of water that can cause health issues due to microorganisms is gray water. Gray water is wastewater that comes from non-toilet sources such as sinks, showers, and washing machines. Although it does not typically contain human waste, it can still harbor various microorganisms, including bacteria, viruses, and fungi, which can pose health risks if ingested or if they come into contact with skin. Potable water is safe for drinking and has been treated to remove harmful organisms and contaminants, making it a reliable source for human consumption. Sanitary water typically refers to clean water that is suitable for washing and sanitation but does not encompass the same risks as gray water. Distilled water is purified through the process of distillation, removing impurities and microorganisms, resulting in water that is safe to drink without health concerns. Understanding the differences in water types and their associated risks is crucial for effective mold assessment and remediation, as the presence of microorganisms in water sources can lead to mold growth and potential health hazards.