The 2024 Long Island Sound Report Card tracks and publicizes the ecological health of Long Island Sound. Our biennial report assembles water monitoring data and, using an assessment methodology designed for the Report Card, grades water quality in five open water regions of Long Island Sound and 57 bay segments along its margins. We provide the results to elected officials, environmental agencies, and the general public as part of our ongoing work to catalyze improvements in ecosystem health and promote restoration projects and infrastructure investments. All grades in the 2024 Long Island Sound Report Card result from monitoring data collected during the 2023 monitoring season.

This report is designed to provide the public and local officials with a three-year analysis of publicly available data on water quality conditions at our swimming beaches from 2020-2022. This analysis shows how Sound beaches rank when measured against the criteria for safe swimming and indicates how wet or dry weather influences these conditions.

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Our 2022 Report Card features grades for 53 bays and bay segments from around the Sound. We bring the results to elected officials, environmental agencies, and the general public as part of our ongoing work to catalyze improvements in ecosystem health and promote restoration projects and investments.

This report is designed to provide the public and local officials with a three-year analysis of publicly available data on the water quality conditions at our swimming beaches from 2018 to 2020. This analysis shows how our beaches rank when measured against the criteria for safe swimming and indicate how wet or dry weather influences these conditions.

For the first time, in addition to open-water testing, the biennial report includes water quality grades and findings for 50 bays and bay segments in the Long Island Sound. The report revealed surprising results, raising concern about the current ecological health of local bays and their resilience in the face of warming trends and ongoing pollution from Sound communities.

Save the Sound's 1st Beach Report! This report is designed to provide the public and local officials with a three-year analysis of publicly available data on the water quality conditions at our swimming beaches from 2016 to 2018. This analysis shows how our beaches rank when measured against the criteria for safe swimming and indicate how wet or dry weather influences these conditions.

The Long Island Sound Report Card tracks and publicizes the ecological health of Long Island Sound. Every other year, Save the Sound assembles water monitoring data and, using an assessment methodology designed for the Report Card, scores water quality in five regions of Long Island Sound. We bring the results to elected officials, environmental agencies, and the general public as part of our ongoing work to catalyze improvements in ecosystem health and promote restoration projects and investments.

The landmark study, authored in collaboration with University of Connecticut Professor Jamie Vaudrey, examines the health of New York City-area waterways—the East River and Long Island Sound—where $1 billion has been invested to tackle nitrogen pollution. Excess nitrogen (often from treated sewage) depletes oxygen in the water and causes “dead zones” that lead to fish die-offs. High nitrogen levels also fuel toxic and nuisance algae blooms and deterioration of coastal marshes that protect shoreline communities from storm surges.

The Long Island Sound Report Card tracks and publicizes the ecological health of Long Island Sound. Every other year, Save the Sound assembles water monitoring data and, using an assessment methodology designed for the Report Card, scores water quality in five regions of Long Island Sound. We bring the results to elected officials, environmental agencies, and the general public as part of our ongoing work to catalyze improvements in ecosystem health and promote restoration projects and investments.