Yes drinking 64 ounces of water per day is good for your health and helps to flush your kidneys of toxins.
64 ounces of water per day is what is advised for humans to drink to stay healthy and keep their kidneys healthy.
That 64 ounces of water per day equals eight 8 ounce glasses of water per day which is what you're supposed to drink.
You can drink more than 64 ounces of water per day if you're thirsty and want to drink that much but just don't drink too much as in gallons of water as it could lead to water intoxication.
But 64 ounces of water per day is a really good healthy amount of water to drink to stay healthy.
Drinking plenty of water keeps you hydrated, prevents kidney disease and even helps prevent gout.