I am sorry, but the documents provided do not contain specific information about the required PPE for a water treatment plant. Therefore, I cannot provide a complete answer to your question. However, I can give you some general guidance. Generally, in settings where chemical exposure is possible, it's important to wear appropriate PPE [1]. This may include safety glasses with side shields 5, 6, 18, chemical-resistant gloves 6, 19, protective clothing [1], and respiratory protection 6, 18 if there is a risk of inhaling harmful vapors or mists. A risk assessment should be performed to determine the specific hazards and select the appropriate PPE for each task 6, 19.