The 29 largest ozone facilities in the world (in 1994) Site Country Water Flow Max O3 manu in cubic cons. in facturer meters/day kg/hr Moscow II USSR 2,400,000 400 Trailigaz Paris France 1,600,000 300 Trailigaz Los Angeles USA 1,500,000 300 Asea Brown Boveri Moscow I USSR 1,200,000 200 Trailigaz Montreal Canada 1,100,000 150 Trailigaz Choisy-le-Roi France 800,000 150 Trailigaz Madrid Spain 700,000 150 Trailigaz Neuilly-sur-Marne France 600,000 120 Trailigaz Kiev USSR 400,000 100 Trailigaz Mery-sur-Oise France 300,000 75 Trailigaz Singapore Rep of Singe 450,000 72 Trailigaz Helsinki Finland 495,000 63 Trailigaz Manchester U.K. 480,000 50 Trailigaz Orly France 300,000 50 Trailigaz Minsk USSR 200,000 47 Trailigaz Essen Germany 480,000 45 Trailigaz Brussels Belgium 250,000 45 Trailigaz Lodz Poland 480,000 40 Trailigaz Torino Italy 130,000 40 Trailigaz Chiba Japan 270,000 38 Trailigaz Mokry Dwor Poland 200,000 36 Trailigaz Toulouse France 200,000 31 Trailigaz Sipplingen Germany 480,000 30 Hermann Gorky USSR 350,000 30 Trailigaz Bilbao Spain 172,000 30 Trailigaz Florence Italy 345,000 30 Degremont Nantes France 380,000 30 Degremont Marseille France 350,000 27 Trailigaz Amsterdam Netherlands 125,000 25 Trailigaz Source: "Ozone - The Eternal Purifier of the Earth and Cleanser of All Living Beings" by Dr. H.E. Sartori and "The Use of Ozone in Medicine" by Rilling and Viebahn.