[helloindia]

"Is it ok for one person to dig a well on their property, and say, pump millions of gallons out and sell it?"

--> This is an actual problem in India. The govt made electricity FREE on farm lands. So, now people with farmland dug borewell, pump out water and sell them in tankers in the city, where many apartments don't have municipal water connection. Water is cheaper for apartments where there is low ground water, as cost of electicity consumption for farmers is nil.