Long Island water quality through the years
Find out more about the evolution of Long Island's water quality through the years.
This 2010 graphic based on information from the Peconic Baykeeper shows how liquid waste leaching from septic systems makes its way into the water.
This 2010 graphic shows the management plan to quell the levels of nitrogen and other contaminants in Suffolk's water supply.
This 2010 graphic shows how vulnerable Suffolk community supply wells are to contamination from fertilizer and septic systems.
This 2009 graphic based on information released from the Natural Resources Defense Council's annual report shows beaches that are generally closed because of high levels of bacteria or storm water runoff.
This 2012 graphic shows the evolution of the pollution at the former Grumman site.
This 2009 graphic based on information from the Suffolk County Health Department shows the former Grumman facility and suspected sources of contamination.
This graphic shows the state Department of Environmental Conservation's cleanup plan for the Bethpage plume.