Tennessee Wastewater Operator Practice Exam

According to Tennessee regulations, what is the maximum allowable concentration of fecal coliform bacteria in an individual sample per 100 ml?

1. 100

2. 500

3. 1000

4. 1500

The correct answer is: 1000

In Tennessee, regulations regarding the concentration of fecal coliform bacteria in wastewater indicate that the maximum allowable concentration in an individual sample per 100 ml is indeed 1000 cfu (colony-forming units). This standard is critical for ensuring that treated wastewater being released into the environment does not pose a significant health risk to humans and ecosystems. Fecal coliform bacteria are used as an indicator of potential contamination by pathogenic microorganisms, which can cause diseases. Therefore, regulatory limits are established to maintain public health and environmental safety. A limit of 1000 cfu per 100 ml represents a balance between allowing for some level of microbial activity while preventing excessive levels that could lead to health-related risks. Understanding these limits is crucial for wastewater operators to ensure compliance with regulations and to protect public health effectively.