Abstract: A method for removing organic or inorganic micropollutants from aqueous solutions includes adding a biomass of biomaterial to the solutions, the biomaterial being an active or inactive biological organism, such as a yeast, having affinity for biosorption (adsorption by the biomass)of an organic or inorganic micropollutant present in the solution at, or below, a parts-per-billion concentration, and controlling the pH and temperature of the solution, as well as contact time and agitation, to be within a range suitable for biosorption of the at micropollutant by the biomaterial. The amount of biomass added to the solution may be calculated according to the amount of solution, the concentration of the micropollutant in the solution, and the total amount of the micropollutant that can be biosorbed by a particular quantity of the inactive or active biomaterial. In a preferred embodiment, the biomaterial is obtained from Saccharomyces cerevisiae.