We’ve long had crews to help clean the river, and once we’re able to meet again*, we’d love to have you on board. The 3 main pollutants to the Bronx River are floatable trash, fecal pathogens, and low dissolved oxygen (which is what aquatic critters need to survive). In order to improve, protect, and restore the Bronx River, a robust water quality-monitoring program is necessary to determine the types, locations, and severity of inputs. Our Project WASTE Program was developed to address the floatable trash; the water-quality testing methods described on this page help us address the other two main issues. Our newest program, microplastics analysis, allows us to collect and identify microplastic pollution in the Bronx River. By addressing these water pollutants at their sources, we will begin to reverse the degradation of this urban river and promote ecosystem recovery and restoration. We welcome your help! *Unfortunately, in the wake of the covid-19 pandemic, all in-person volunteer events at the Bronx River Alliance have been postponed until further notice in accordance with official health and safety guidelines. In the meantime, you can still participate in our virtual programming! Please visit our YouTube, Facebook, and Instagram pages for daily content to stay engaged with the Bronx River!