From Scientific American, we learn that huge amounts of precious water are being polluted to such an extent that it can never feasible be returned to the planet’s fresh water system. This is horrifying, especially since there are much safer alternatives, including conservation and sustainable energy supplies.

The nation’s oil and gas wells produce at least nine billion liters of contaminated water per day, according to an Argonne National Laboratory report. And that is an underestimate of the amount of brine, fracking fluid and other contaminated water that flows back up a well along with the natural gas or oil, because it is based on incomplete data from state governments gathered in 2007.

The volume will only get larger, too: oil and gas producers use at least 7.5 million liters of water per well to fracture subterranean formations and release entrapped hydrocarbon fuels, a practice that has grown in the U.S. by at least 48 percent per year in the last five years . . . The problem is that the large volumes of water that flow back to the surface along with the oil or gas are laced with everything from naturally radioactive minerals to proprietary chemicals. And there are not a lot of cost-effective options for treating it, other than dumping it down a deep well.