WOODBURY - Environmental groups say the water on Long Island is more contaminated than ever before. Today, they held a major conference with scientists and lawmakers to address the issue.New York City and much of the state get their water from reservoirs, but Long Island's water comes from underground aquifers."I don't think people on Long Island understand," Babylon Assemblyman Bob Sweeney said. "We're standing on the water we drink."At today's conference, Sweeney announced a bill to give the state's environmental agency overall control of water quality enforcement on Long Island. Sweeney also said that more public education on the topic is needed, since everything from lawn fertilizer to unused medicine flushed down the toilet can end up in drinking water.