A decade or two ago it might have been hard to reconcile using the word “green” to describe an oil refinery, paper mill or car factory. Yet today big manufacturers, even in what many might think of as “dirty” industries, are doing remarkable things to beautify their sites and limit their environmental footprints.
Water treatment plants, on the other hand, have been largely green by definition. When your raw material is lake or well water and the end product is drinking water that has to please consumers and meet all sorts of government standards, environmental responsibility pretty much comes with the
