you can use normal filtered or bottled water for your coffee. as far as tap water is concerned, the main problem of tap water is Chlorine in the water. Not for health reason, but chlorine will change the coffee taste big time. that is why tap water is not recommended when you make your coffee.
BTW, the Chlorine in tap water is to prevent contamination in the water and since it is very small amount (up to 4 parts per million), it does not affect your health what so ever.
Brita water filters are very popular here, I'll check into getting another.
So is what gives the water that skunky taste sometimes?