We are not talking about a third world country here, and we are not talking about short term problems. Some of these advisories have been in place for years.
Canadians have more fresh water than anyone else. Some of use are paranoid that we might be somehow forced to give it to Americans - though since we give them everything else I don't know that water is so special.
But if they knew how bad our water is, would they want it?
And just to be clear, the problem is the lack of municipal spending and supervision of potable water supplies. We do not like paying taxes to get clean water apparently. And we put up with it - but howl like banshees if we have to pay more for gasoline.