From an article in the:
 Journal of Applied Psychology, Vol. 67, No. 2, Pp. 230-238:

 Researchers in the Dept. of Psychology at Florida International University, North Miami, found a statistically significant delay (almost ½ second longer to respond) in visual response to a peripheral light stimulus in subjects given just ½ milligram of sodium fluoride. 

That dose is less fluoride than the amount you get from drinking one and a half cups of coffee or tea made from fluoridated tap water at the alleged "optimal" amount of 1ppm in your Water!

The American Dental Association does Not know, at least scientifically how they came up with 1 mg/day.  Really! 

In any fluid, to consume 1 mg of something per 24 hours, 

for example Fluoride!

it is required to be diluted to 1ppm to get the 1 mg in 1 liter of fluid, for example WATER! per 24 hours or a day.

[24 hours still equals a Day.] I know you know that.

So,

1ppm/L = 1mg/day

1 Part Per Million per Liter equals

1 milli gram 1/1000 of a Gram per liter

a Liter is approximately a Quart, 32 ounces.

(Imagine a Quart of Oil for your car, or 3- 12 oz cans of soda  12 oz x 3=36 oz or 1 qt ) 

Still with me so far? of course you are! !    

Now here comes the STUPID part:

If YOU don't want to Over Medicate  "OVER DOSE" aka "OD" yourself or Children.

YOU ARE NOT ALLOWED TO DRINK MORE THAN:

 ONE LITER

 or QUART, which is

 32 ounces or

 3- 12 oz cans  of Water a day or in  24 HOURS!

IF YOU DRINK MORE THAN  THIS  3--12 ounce size  cans of water a day...

 IT IS YOUR FAULT IF YOU GET ILL!  

(or any combination of things made with fluoride in the water, like Coffee, Tea,  Soda, Juice, Beer, or Soup!)

What's wrong with this scenario ?

Does this make insane yet?

                Care to leave a comment?

Remember, Most Doctors Recommend a minimum of   8- eight ounce glasses of water per day.  That is 2 liters or Quarts.  Many doctors recommend 3 to 4 quarts a day of water. 

How much water do you drink per day?