Water quality is the easiest and one of the most important variables to achieving a great tasting cup of coffee. You should always use the best quality water available to you. Filtered from your fridge, a brita pitcher, or even bottled water will be better than using tap (since your tap water might contain flavors imparted by the chemicals used to make sure it’s safe to drink). Your cup of coffee is 98 percent water. So the water you use to make coffee should taste clean, fresh, and free of impurities. In further discussions we will expand more on water hardness and other factors that can also drastically improve the taste of your coffee at home.