TEPCO : Result of Radioactive Analysis around Fukushima Daiichi Nuclear Power Station (pdf),

TEPCO : Result of Radioactive Analysis around Fukushima Daiichi Nuclear Power Station (pdf), Jan. 20, 2014:
Underground water observation hole No.1-16

• Cs-134 @ ND (Detection limit: 1.9 Bq/liter)
• Cs-137 @ ND (Detection limit: 1.9 Bq/liter)
• Gross β @ 3,100,000 Bq/liter

View the most recent sampling results, all-time highs on last 2 pages (pdf)

http://www.tepco.co.jp/en/nu/fukushima-np/f1/smp/index-e.html