In order to transform water found in the natural environment (either as surface water or groundwater) into a food product, it first needs to be made safe to drink. This means it has to be abstracted under good conditions, treated and then distributed to consumers 24/7 whilst at all times adhering to health quality standards.
This service comes at a cost. The same is true for wastewater services. This consists of collecting the wastewater, then treating it before releasing it back into the natural environment.
In a way, consumers "borrow" the water they use in so far as they consume a quality food product which then has to be released back into its original environment once treated.
