|Hypoxia in Long Island Sound. |
The colors represent the percentage of years that there was hypoxia in the
bottom waters of the Long Island Sound (1991-2011)
Image from the Long Island Sound Study.
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There are a number of anthropogenic sources of nitrogen in Long Island, the most important being sewage treatment plant releases with storm water pollution the second most significant source. Reductions of nitrogen in these sources are key to the overall health of the Sound.