Manufacturing in the United States is still important, especially in the automotive and construction industries. Solvent used in this process is important in many kinds of industrial or manufacturing applications such as cleaning and lubricating. Because of the hazardous nature of the contaminants used in solvents and the manufacturing process in general, you cannot just dump them down the nearest drain, the way some people would dump dirty oil away after changing their oil in the driveway. And because of the ubiquitous nature of solvent in many types of sites, be it in aerospace, manufacture of furniture, paint and ink, cabinet manufacture, pharmaceuticals, petrochemicals, automotive, fabrication and so on, we can see that just dumping used solvent may not be so cost effective. After all, the cost of hauling this waste away while conforming to strict EPA guidelines will be high. You cannot just by a dumpster to put in the back of your shop, after all. Instead of wasting used solvent, reusing lessens the amount of waste taking place. The wasted solvent must be replaced and that cost, compounded with the cost of solvent waste removal, makes it a huge cost. This is especially true with the rising cost of oil, a major component in these solvents. The most effective solution is definitely a solvent recovery system.