They charge of portable water, they have access to free tap water but apparently the tap water is so bad they are forced to buy water bottles. So effectively the prison know they can’t charge just for water so they make sure the water from the taps isn’t good enough to drink but passes whatever low bar Texas has in it regulations and then charges them for bottle water.
I wasn’t defending the prison system I was trying to say it worse then just having them pay for water. They are make the “free” water they can have is so bad that the prisoners have to buy water. Which should be very illegal.