Geiger Counter Readings in Seattle, WA on August 4, 2012

Ambient office = .130 microsieverts per hour

Tap water = .131 micosieverts per hour

Filtered water = .123 micosieverts per hour

Peace from local produce stand = .100 micosieverts per hour

Ambient outside = .104 micosieverts per hour

Soil exposed to rain = .109 micosieverts per hour