Philippine E-Journals

ISOLATION OF COLONY FORMING BACTERIA IN DIFFERENT WATER REFILLING STATIONS IN DAVAO CITY

Marx P. Catalan | Nestle John E. Alcantara | Mary Angela M. Daño | Queenie Dianne M. Gepolio | Renyll Joy S. Muyco | Jazmine P. Soriano | Kate Licca T. Ortiz | Klara Pelissa C. Parantar | Rico Jade A. Ypanto

 

Abstract:

Safe drinking water is essential to humans and other lifeforms even though it provides no calories or organic nutrients. Although access to safe drinking water has improved in almost every part of the world, approximately one billion people still lack access to safe water and over 2.5 billion lack access to adequate sanitation. Today most households are using purified water purchased from water purification and refilling stations because of their promise of clean, and microbefree drinking water. This study aimed to detect and identify possible microbial contamination in water from water refilling stations in Davao City. A quantitative and descriptive design was used to determine the presence of microbial contamination and evaluate the microbial load of the water samples using standard laboratory procedures such as water bacteriology and heterotrophic plate count. Results of the heterotrophic plate count showed that the microbial load was less than the standard countable range (30-300cfu/ml) to be considered non-potable. For the determination of total coliforms, all the test tubes yielded negative results. These results indicated that the water refilling stations in Davao City provided clean and potable drinking water to consumers.