Fresh water tank - do you drink water from it?

I won't even drink my tap water at home without RO filtering it first.:(
(There is a large group of petroleum storage tanks that are leeching into the ground water.....they SAY it's not enough to be a problem....but my tap water smells like petroleum and I won't drink it.)

I pack jugs with RO filtered water or get water from the bulk filtered at Walmart....The Walmart water is also RO filtered water....tastes pretty good to me.