3 ms·That map is also 20 years old. Edit: I looked at the wrong map.by Cerium 7y agoThat map is also 20 years old. Edit: I looked at the wrong map.kbenson 7y agoWhich map? The one the link points to, which notes clearly "( Updated 1/4/19 )"?Cerium 7y agoOh, good point. I looked at the wrong map. I was looking at the mercury contamination map on the Wiki page; which is based on 1999 data.