Some sources say that 400 tons of radioactive water per day are pouring into the Pacific from Fukushima.

 

There are 660,430 gallons of water in an Olympic size swimming pool.  There are 240 gallons in a ton.  660, 240 divided by 240 is 2752 tons of water in an Olympic size swimming pool.  Next, divide 2752 by 400 to obtain 6.89 and round to 7.  That 7 stands for seven days:  an Olympic size swimming pool’s worth of radioactive water has been pouring into the Pacific each week since 3/11/11!