Did you know that, according to Compassion International, if you drink the "required" 64 ounces of water a day and live to the age of 80, you will drink 14,600 gallons of water! That is roughly the amount in your average pool, complete with a waterfall.
Now, consider the fact if every one of those gallons were brown with dirt, disease, and a whole bunch of disgusting, life-threatening things. That is the type of water millions of children drink every day.