UCB Rain Water Sampling Results, University of California, Berkeley, Department of Nuclear Engineering:
Iodine-131 level in rainwater sample taken on the roof of Etcheverry Hall on UC Berkeley campus, March 23, 2011 from 9:06-18:00 PDT
20.1 Becquerel per liter (Bq/L) = 543 Picocuries per liter (pCi/L)
Conversion calculator here.
The federal drinking water standard for Iodine-131 is 3 pCi/L. (Source)
UCB Rain Water Sampling Results here.
http://enenews.com/radioactive-iodine-131-in-rainwater-sample-near-san-francisco-is-18100-above-federal-drinking-water-standardSome of their other headlines linked on that page:
EPA: Radioactive Iodine-131 levels in PA & MA rainwater “exceed maximum contaminant level permitted in drinking water”
Radioactive Iodine-131 in Pennsylvania rainwater sample is 3300% above federal drinking water standard
Radioactive particles from Fukushima found in Massachusetts rain — “25 times less risky than it would need to be in order to cause any health concerns” (VIDEOS)
Don’t drink the rainwater says State of Virginia (VIDEO)
Highest yet: 3,355 times legal limit of radioactive iodine-131 found in seawater — Reactor cores may have been continuously leaking into Pacific