Ozone janareta na iya kula da ruwan wanka: ozone sanannen sanannen koren ƙwayoyin cuta ne na muhalli, wanda ba zai haifar da gurɓatawar yanayi na biyu ba.Shirye-shiryen chlorine zai amsa tare da kwayoyin halitta a cikin ruwa don samar da nau'o'in chlorinated kwayoyin mahadi, kamar chloroform da chloroform.Wadannan abubuwa ana gane su azaman carcinogens da mutagens.Ozone da samfuransa na biyu (irin su hydroxyl) suna da mafi ƙarfi na ƙwayoyin cuta da tasirin hana ƙwayoyin cuta, wanda zai iya hana yaduwar cututtuka yadda ya kamata kuma ba zai haifar da gurɓataccen gurɓataccen abu ba.