Nanotechnology, the engineering and art of manipulating matter at the nanoscale (1-100 nm), offers the potential of novel nanomaterials at various life science purposes. . A wide range of researchers from civil engineering, water science, geology, environmental science, chemistry, materials science and ecotoxicology are involved in this emerging multidisciplinary field. Increasing use of engineered nanomaterials with novel properties relative to their bulk counterparts has generated a need to define their behaviors and impacts in the environment. The high surface area to volume ratio of nanoparticles results in highly reactive and physiochemically dynamic materials in environmental media. Nanomaterials for environmental aspects exists to serve the needs of diverse communities, providing a forum for the prompt communication of original and innovative developments in nanomaterials and the environment, and in an effort to improve their utilization and safety. Accordingly, this special issue covers, but is not limited to, the development and use of nanoparticles, nanomaterials and nanocomposite devices in environmental applications for water, air and soil either as environmental pollution controllers or environmental pollution detectors.