The special consideration of a water connection to a fridge, is that this is a moveable appliance. So the water line will be made of some kind of flexible material, and will be subject to more stress than other fixures in the house (because fridges get pushed into place, and pulled out for cleaning etc..).

So it depends a lot upon the materials used, and the quality of workmanship of the minimum-wage contractor who installs it.

Cheers