Boil Order!!

We had fun in Fox Lake the last two days.    Woke up to no water yesterday.  Apparently someone ran into a fire hydrant and it emptied all of the water in town.  How does that happen??  Only in Fox Lake!   So we were called and told that we were under a boil order.  What the heck is a boil order???!!   I googled it of course.    It is quite complicated actually.   We ended up going out for dinner last night so we didn't have to deal with boiling water to make dinner.   Then today they said it was all clear and we were free to use the water normally.  My friend Liz and I were wondering now what,  do we need to empty our hot water heater?   Ice maker and water lines in the fridge?   Very confusing.   I of course google it again.    Yes to the ice maker and water line but apparently if you crank up your hot water for a half hour it will kill any bacteria in the water.   Things you learn!!!