Colorado Coffee

I have heard people tell me that the best coffee that they have ever had was coffee that they had on hiking trips in Colorado along the Colorado River. I was thinking about that and decided to give my cousin a call who was the Trail Cook for one such excursion company. I asked her what she did to make the coffee along the trail. Here's what she told me.

"Get ICE-COLD water from the river and filter/purify it. Fill a big coffee pot with the water, through some grounds in it, and boil for 5 minutes. After boiling and just before serving, pour a cup of ice cold water on top (this causes the grounds to fall to the bottom of the pot). At this point serve Colorado Coffee."

I live on the St. Clair River and have been considering getting some water from it and making some "St. Clair Coffee" but my wife is aghast at the notion. She doesn't think I could filter or purify it enough to make it safe. I am leaning on her side of the discussion. I am thinking that I will just wait for a good snow fall and make some "Snow Coffee" instead. ;-)