an outflowing of water to a natural body of water, from a structure such as a water recycling treatment plant or sewer pipe

tiny bits of plastic

any group of microorganisms which stick to cell surfaces

a bacterium, virus, or other microorganism that can cause disease

a process by which colloidal particles come out of suspension to sediment under the form of floc or flake, either spontaneously or due to the addition of a clarifying agent