It's sad we can't get clean, safe tap water to drink. I filter my water at home. I don't have a reverse osmosis unit but it does a decent job. Reverse osmosis is the best way to go. It takes out virtually eveything. Look (Google)it up and see for yourselves. They just started putting CLoramines in my tap water so I can't fill my fish tank up with it. Now I use filtered water for it.