After several years of investigations into the cause of high bacteria levels at a Long Island (New York) beach, the Nassau County Legislature is considering a treatment system for its stormwater drainage.The latest investigation ended after the state looked at eight residential onsite systems as possible causes of the pollution. But after studying the systems for several months, the state concluded they are not sending wastewater into a stream that flows into the Long Island Sound at Glen Cove.The state Department of Environmental Conservation has not ruled out onsite systems leaking wastewater into the groundwater, reports Newsday.In the spring, the U.S.
