Nanomaterials describe, in principle, materials of which a single unit is sized (in at least one dimension) between 1 to 1000 nanometres (10−9 meter) but usually is 1 to 100 nm (the usual definition of nanoscale).
Drinking water is a limited resource threatened by contamination with pesticides, pharmaceuticals, and other micropollutants. An EU-funded initiative investigated new technologies for the bioremediation of drinking water resources contaminated with micropollutants.