Geothermal Systems on Long Island

This paper examines geothermal systems and their potential effect on groundwater. Low temperature geothermal systems and their interaction with groundwater aquifers is an area that has been little researched and raises many complex questions and issues for both individuals and regulators. On Long Island, these issues are particularly critical, as its aquifers constitute a “sole source ” of potable water. In addition, there has been much effort to preserve coastal ecosystems, where groundwater discharges. These questions are considered through a literature search combined with reports on personal experience with geothermal systems on Long Island. This review provides insight into how little is known about the effects of these systems, how important additional research is, and the need for review and regulation of geothermal installations. i