Just saying sorry is not enough when you have actually let children and staff under your care and responsibility come in harm's way.  There needs to be some consequences here for what damage has already been done, especially when she knew.  This is a case of too little, too late.  I hope none of the kids, teachers or other staff members (especially pregnant ones) drank the water there regularly (which I am sure they did as we Americans have come to think that decent and accessible public water is a public right, right?).  My own 2nd grader goes to one of these schools and has been drinking from the fountains there regularly he told me.  Lead exposure and contamination can actually cause mental retardation and other serious damage to one's person and health with repeat exposure.  This lack of oversight is not an okay thing that can just be brushed off with a canned apology.  There needs to also be some real accountability and consequences for such negligence.