Regarding AgNP CWF, the key drivers were the PE characterization factor, the PE in container, and the AgNP loading. The AgNP loading refers to the concentration of AgNP on the CWF based on the mass of AgNP applied per filter. The component with the highest influence on environmental impact of AgNP CWF system was the plastic bucket that holds the water that filters through the CWF. The AgNP coating had more influence on surface water due to the shorter AgNP lifespan which results in more frequent AgNP recoating in response to the higher turbidity of the water.