Whether the water quality reaches the standard or not is the result obtained by the quality inspection department after testing; You can't just judge by looking and smelling. Most of the ordinary water used in schools has undergone strict sterilization and disinfection, and has undergone strict inspection by the quality inspection department. Few informal schools can be finished with disinfectant as you said.

If you are interested, you can first apply to the student union to check the water quality report at the school logistics office (it is not appropriate to go by yourself). As for whether there are any health risks, you can consult the school hospital after reading the water quality report. If there is a problem, then you are doing well. After all, it is related to the health of all students!

Good luck!