Long Island Sound Water Quality

Long Island Sound Water Quality

• Water Quality Monitoring and Hypoxia Monitoring
• Hypoxia and Nitrogen Reduction Efforts
• Nitrogen Control Program for Long Island Sound

• EPA Long Island Sound Partnership
• EPA Nutrient Pollution Outreach and Education Materials
• NOAA Nutrient Pollution and Hypoxia
• USGS New England Water Science Center
• Long Island Sound Coastal Observatory

 Long Island Sound General Information

Content last updated October 23, 2025