| It is commonly supposed that the health
of Long Island Sound is chiefly the responsibility of the shoreline communities
in Long Island, Westchester County and Connecticut. This is largely true. It is
also true, however, that New York City has long been a major contributor to the
environmental ills that torture this noblest of American estuaries. The main reason is four old municipal sewage treatment plants on the East River. Every day of every year, these plants deposit hundreds of thousands of gallons of partly treated wastewater into the river, which then, with tidal certainty, propels the polluted water into the Sound itself The most damaging of the pollutants leaving the plants is nitrogen—useful as a fertilizer on land but, in sufficient quantities, fatal to bodies of water like the Sound, where it stimulates the growth of bacteria and algae and robs the water of oxygen. This condition is known as hypoxia, and it suppresses marine life. Roughly half the nitrogen comes from treatment plants and other sources in about 80 shoreline communities, the other half comes from the New York City plants. It is thus cause for great celebration that the city agreed last week to settle a longstanding legal action and spend at least $700 million to upgrade these four plants, cutting their nitrogen output by nearly 60 percent by 2017. Audubon New York, a leader among the environmental groups that helped shape the agreement and move it forward, when negotiations seemed to falter, called the agreement an historic moment in the struggle to restore the Sound to good health. In retrospect, the most important moment in that struggle the moment from which all else has flowed, including last week's agreement—came m 1994, when New York and Connecticut. after sustained pressure from the federal Environmental Protection Agency, approved a comprehensive plan to clean up the Sound. The city's main responsibility was to modernize its sewage treatment plants. The Giuliani administration left the bulk of the task to Mayor Michael Bloomberg. Alarmed by the project's estimated $1.3 billion price tag, Mr. Bloomberg dispatched Christopher Ward, then the environmental commissioner, to Europe and elsewhere to find new, more cost-efficient waste treatment technologies. In due course, Mr. Ward and his counterpart in Albany, Erin Crotty, reached an agreement in principle to reform the plants at well under the original cost. Mr. Ward and Ms. Crotty left public service, but after further debating aimed partly at ensuring that future city administrations could not wiggle out of the deal, and after further prodding by Attorney General Eliot Spitzer, their successors. Emily Lloyd and Denise Sheehan, brought the matter to a close. This does not mean the Sound is no longer at risk. The Sound passes through the densest population corridor in the country, and will remain forever stressed by the 20 million people who live within 50 miles of its shores. Thus the shoreline communities in Long Island, Westchester and Connecticut must do more than ever to contain pollution. |