Water Excess?

Was just sent the following article on drinking too much water causing kidney failure in Walkerton residents....

http://www.winnipegfreepress.com/subscriber/health/story/4110293p-4706638c.html

What do I think? I think 80% of people that I see don't drink enough water and stories like this upset me because it just deters people from drinking water at all! Simple health concerns like headaches and constipation can be minimized with making sure you are properly hydrated. Your body is 70% water and every cell needs water to do its function properly. A good goal is 2 L a day or half your body weight in ounces - definitely increase that amount if you are exercising.