What is the EPA's stream water quality rate for fecal coliform?

The correct answer is based on the U.S. Environmental Protection Agency’s (EPA) recommended water quality criteria for fecal coliform in recreational waters. The EPA sets the standard for fecal coliform at a threshold of 200 colonies per 100 milliliters. This guideline is crucial for assessing the microbiological safety of water intended for recreational use since high levels of fecal coliform indicate potential contamination by fecal matter, which can harbor pathogens harmful to human health.

This standard aims to protect public health by limiting exposure to waters that could lead to illnesses primarily caused by waterborne pathogens. When fecal coliform levels are elevated beyond this threshold, it signals a higher risk of illness related to swimming or other water activities.

Understanding this criterion is essential for environmental health specialists and sanitarians, as it informs monitoring protocols and responses to water quality issues, ensuring effective management and protection of public health in recreational waters.