Where does the water for whisky come from? 知名威士忌水源来自哪里？

Many learners, in their early days of learning about Scotch whisky
will be exposed to the expression ‘’the three elements of whisky‘’.
They are: raw materials, yeast and water.
It seems that these three things should be very important.
Really?
很多学员早期学习苏格兰威士忌，
会接触到‘’威士忌三要素‘’这种说法，
分别是：原料，酵母和水。
看来这三点应该是很重要的吧…