What a company’s water number covers: exposure across held facilities

Rolling facility water up to the companies that operate them produces figures that are useful and partial in the same breath. Hydrionis holds generating stations for around four hundred American operators; a hundred of them run more than one, and ninety-five have facilities standing in more than one drainage basin — one in seventeen. That basin spread is the number a company total cannot show: an operator drawing the same volume from seventeen basins and from one is exposed to entirely different risks. Every figure here is labelled with how many of a company’s held facilities reported it, because a total without that is a claim about a business rather than about a dataset.