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Great Swamp—A Threatened Freshwater Wetland a

The value of freshwater wetlands has been known to ecologists for some time. The general public, on the other hand, has frequently looked with disdain upon wetlands. This public perception is gradually changing as wetlands' functions in flood abatement and cleansing of potable water are recognized.' The wetland in this study is the northern New Jersey 8,000-acre Great Swamp. Development of the surrounding lands, including homes, office buildings, shopping malls, roads, electrical power lines, gas lines, water supply systems, garbage dumps, and sewage treatment plants (STP), has resulted in an unprecedented amount of wastes moving into the Great Swamp. These wastes eventually enter the Passaic River, a drinking water source for 600,000 New Jersey residents.* Two STPs dump their effluent into Great Swamp brooks. Though by no means the only sources of pollutants flowing into the Great Swamp, the STPs are the most prominent. The effluent from these two STPs is rich in nutrients and chlorides. The way in which these pollutants affect the ecology and water quality of the Great Swamp is the subject of this study.