In a word: communication. When something happens, those responsible must inform their communities so that safe action steps can be taken. It would also be helpful to look at upgrading our infrastructures and avoiding discharges that could contaminate the local environment.
I agree communication is huge when something happens. But also communicating with neighboring utilities when finding ways to reduce the "reactive" maintenance like "effective" bacteria to reduce jetting in the collection system and minimize solids at the plant level or DO digesters capable of eliminating caking issues, etc.
Communication of these helpful tools allows us to operate better and apply saved funds towards further improvement.