Hydro2050 with the production of hydroxyl radicals is highly efficient and effective at killing single cell organisms including algae, bacteria including Legionella, spores/fungi, viruses and bio-toxins. Hydro2050 cleans and prevents build-up of biofilm growth and prevents scale build up. This eliminates risk from pathogens proliferating in biofilm colonies, infecting the water, and acting as a potential reservoir for chemical and antibiotic resistance.