Public and Industrial Water Supplies and Watershed Areas
If possible, crossing of a catchment area of a water supply should be avoided. Such crossings could entail building costly temporary facilities for the water supply. Some industries require higher quality water than is required for drinking water, so problems with industrial water supplies may be as great as those with a public water supply. When crossing a water supply catchment area cannot be avoided, any corrective measures and their costs should be determined before making the choice of the route.