This lecture covers the fate and behavior of organic contaminants in aqueous environments, including processes governing their removal and degradation, estimation of physical-chemical parameters, and identification of the most relevant environmental compartments. Students will learn about adsorption, photolysis, (bio)degradation, and other key interactions in environmental organic chemistry. The course includes a term project where students review scientific papers, estimate properties, and present their findings. Additionally, the lecture provides guidance on giving professional talks, effective communication, and information retrieval strategies.