How many people have never drank water from the tank?

We sanitize with bleach once a year (probably should do it more often) and often bring water from home. If not we fill at the state park and drink from the faucets in the 5er. DH always cleans the connection site when filling, and keeps the ends of our hose connected together and closed. DH refuses to drink bottled water except when he has no other choice. He can be stubborn like that. We always carry water purification tablets when hiking long distances in case we run out of water.