How much water would a person have to drink over a period of 12 hours in order to develop hyponatremia? i've drank about 9 cups of fluid in 12 hours, but i feel like that's too much. also, i have a mildly low k level (3.2), so is that too much h2o?

Low K: Yes you are drinking to much water!

Hyponatremia: Unless you exceed the capacity of the kidney to excrete free water or have either medications or a reason for high ADH (vasopressin) you should not develop hyponatremia. Your kidney should excrete the free water. We can't drink our way to hyponatremia unless there is a additional reason like high ADH (vasopressin) or meds. You have low K that needs to be worked up. Drink to thrist the best way to do it.