Nitrogen Control Program for Long Island Sound
Each summer, the bottom waters in the western half of Long Island Sound experience hypoxia, or very low levels of dissolved oxygen. Extensive monitoring and modeling of Long Island Sound have identified the excessive discharge of nitrogen from human activities as the primary pollutant causing hypoxia. Nitrogen fuels the growth of algae in the Sound, which eventually decays, consuming oxygen in the process. There is enough nitrogen added by human activity to cause a hypoxia problem each summer.
In 2001, Connecticut and New York, in concert with the federal EPA, completed plans for nitrogen control that identifies the maximum amount, or the Total Maximum Daily Load (TMDL), of nitrogen that can be discharged to Long Island Sound without significantly impairing the health of the Sound. One of DEEP’s management strategies to reduce nitrogen loading was to develop an innovative nitrogen-trading program among 79 sewage treatment plants located throughout the state. Through the Nitrogen Credit Exchange, established in 2002, Connecticut looks forward to reducing the nitrogen load from that source by nearly 65% by 2014.
For additional general information on the nitrogen control program, please contact Mark Parker at (860) 424-3276.
Baseline Nitrogen Loads, Wasteload Allocation and Permitting
For further information on baseline nitrogen loads, wasteload allocation and permitting, please contact CT DEEP at (860) 424-3704.
Nitrogen Credit Exchange
- Report of the Nitrogen Credit Advisory Board to the Joint Standing Environmental Committee of the General Assembly
- Connecticut’s Nitrogen Credit Exchange – An Incentive-based Water Quality Trading Program
For further information on nitrogen credit exchange, please contact Iliana Raffa
at (860) 424-3758.
Additional contacts for Nitrogen Control Program:
- Betsey Wingfield - (860) 424-3704; Bureau Chief, Bureau of Water Protection and Land Reuse
LIS Water Quality Program & Info