PS
You ask about river blindeness, well, don't drink the water, God put commone sense into you, use it !
Do me a favor and crack open a book or take some reading comprehension courses prior to lecturing me again. The river blindness disease isn't spread through drinkng water crackhead as has been discussed in this thread at great length multiple times. What does cause river blindness disease is easy enough to discover by doing a little reading.