Tennessee Wastewater Operator Practice Exam

What is the maximum allowable value in fecal coliform per 100 ml for an individual sample according to TN regulations?

1. 500

2. 750

3. 1000

4. 1500

The correct answer is: 1000

The maximum allowable value for fecal coliform per 100 ml in an individual sample according to Tennessee regulations is set at 1,000. This standard is established to ensure that water quality meets safe levels for public health and environmental protection. Fecal coliform bacteria are indicators of potential contamination by fecal matter, which can lead to the presence of harmful pathogens. Therefore, the regulation is designed to maintain water safety by limiting the amount of these bacteria permitted in water sources. The threshold of 1,000 is significant; it reflects a balance between allowing some level of microbial presence while protecting public health from excessive contamination that could result from sources such as sewage discharges or failing septic systems. Compliance with this standard helps prevent waterborne diseases and ensures that water bodies remain safe for recreational use and aquatic life.