Geiger Counter Readings in Seattle, WA on July 31, 2012

Ambient office = .120 microsieverts per hour

Tap water = .099 micosieverts per hour

Filtered water = .090 micosieverts per hour

Leeks from local produce stand = .077 micosieverts per hour

Ambient outside = .129 micosieverts per hour

Soil exposed to rain = .103 micosieverts per hour