I don't know exactly when it happened but a lot of us have become concerned about staying hydrated. If I am going away from my home for an extended time I carry a stainless steel bottle filled with water. I have a filter at home and I fill my bottle with that. I don't need to bring a bottle to work but if I am going on long drive, to the movies, to a sporting event or other outdoor activity I bring my water. I see a lot of other people here where I live do the same. We even have water bottle filling stations in the streets and at the airport. Do you carry water? Do others carry it where you live?