Tyler and Alex Mifflin spent summers in the water. Childhood memories of canoe trips and pristine waves contrast heavily with something they heard from adults time and again: "Don't swim in Lake Ontario. It's too polluted." That warning was the first drop in the bucket that's become a shared life goal. March 22 is World Water Day and we need the conversation to extend beyond the environment. So we spoke with the Mifflin brothers about the importance of water and how ordinary people can take action every day in unexpected ways.