It’s the most populated island in the nation and one of the most populated in the world. It may be surprising to learn that about half the people on Long Island, N.Y., the bustling suburb of New York City, are served by onsite wastewater systems.While it technically includes Brooklyn and Queens, two boroughs of NYC, the common definition of Long Island is the area covered by Nassau and Suffolk counties; nearly 3 million people packed into 1,200 square miles.Most of Nassau County (population 1.3 million) is sewered, but infrastructure growth didn’t keep up with population growth over the last few
