Water and terrorism

Important note: Please refer the attached article to write the content. 

A terrorist threat has been made via phone against the water system. The caller stated that they would be releasing Tularemia into the water system in the next 4-6 hours. We are not certain of where this action may take place, but we must protect the citizens of our city. Your task is to identify what we can do to counter this biological attack. There is a very SIMPLE answer to this question and I will tell you that it can even be found in the provided paper Water and Terrorism.