Which of the following is not typically a concern related to employee safety in wastewater operations?

High employee turnover is not typically a direct concern related to employee safety in wastewater operations. While high turnover can affect the overall efficiency and morale of the workforce, it does not inherently pose immediate safety risks like other factors do. In wastewater operations, the focus is primarily on maintaining a safe working environment where employees are protected from various hazards associated with the job.

On the other hand, noise exposure, toxic chemical leaks, and inadequate training are significant safety concerns within this field. Noise exposure can lead to hearing loss and other health issues if not properly managed. Toxic chemical leaks can pose serious health risks, including respiratory problems and other long-term health effects. Inadequate training can result in employees not fully understanding the safety protocols or the correct handling of equipment, which can lead to accidents and injuries. Therefore, while employee turnover is an organizational challenge, it is not classified as a specific safety concern in the same way as the other options.