In most of the developed countries of the, World, significant efforts to control the pollution of surface waters have been underway for decades, and particularly the last 10-15 years. These efforts have focused mainly on eliminating or mitiga ting the effects of point sources of pollution. In many ca ses, however, it is clear that we have achieved only limited improvement in water quality, and that non-point sources of pollution are going to control any further improvement. It has long been known that urban runoff is a major non-point source, and much research has been done in an attempt to...
In most of the developed countries of the, World, significant efforts to control the pollution of surface waters have been underway for decades, and p...
