Due to anthropogenic sources such as urbanization, and industrialized agriculture a substantial quantity of contaminants have been discharged into the Forge River’s ecosystem. Specifically in the past decades, the Forge River has been exposed to duck farms, effluent discharge, septic system leachate, stormwater runoff, loss of wetlands, over-development, and shoreline hardening (Suffolk County Government, 2016). Due to the high groundwater table in close proximity to the Forge River, the groundwater and septic contamination has consequently impacted the sediments present in the area (Brownawell,. Et al, 2009). Additionally, manufacturing, milling, and material transportation occured on the Forge River which can explain the result of previous analyses that demonstrated that sediment qualities are unsuitable for the Forge River (Swanson et al., 2010). To determine the concentrations of heavy metals all sediments samples were sifted using a 38 micron sized sieve to achieve a consistent particle size throughout the sediment samples. The SRX beamline was used to collect data at the NSLS II in Brookhaven National Laboratory, which was analyzed with PyXRF. Results of this study concluded that heavy metals such as As, Co, Cu, Fe, Ga, Mn, Ti, V, and Zn were present throughout the top and bottom sediments of the river and some were particularly concentrated at the mouth of the river. Overall, bottom sediments had higher relative counts of heavy metals. This may have been attributed to marine traffic and pollutants being present from before dredging occurred in 2006 to decrease harmful contaminants (Swanson et al., 2010), however a point source cannot be determined without a XANES analysis.