Geiger Counter Readings in Seattle, WA on August 1, 2012

Ambient office = .073 microsieverts per hour

Tap water = .133 micosieverts per hour

Filtered water = .100 micosieverts per hour

Ear of corn local produce stand = .116 micosieverts per hour

Ambient outside = .086 micosieverts per hour

Soil exposed to rain = .088 micosieverts per hour