Philippine Science High School Western Visayas Campus – Department of Science and Technology (DOST-PSHS WVC), Brgy. Bito-on, Jaro, Iloilo City 5000, Philippines
Hora, Fel H. , Moncada, Mary Joy I. (January 2003)
ABSTRACT
This study was conducted with the primary objective of determining the water quality of the drinking water in PHSWVC and in the residential area of Brgy. Bitoon, Jaro, Iloilo City, Iloilo. Water samples were taken from six (6) different sites: three from PSHSWVC and teh remaining three from Brgy. Bitoon, Jaro, Iloilo City. The following determinants were tested at the PSHSWVC Science Research Laboratory: pH, filterable solids, dissolved solids, total solids and coliform bacterial concentration.
Results showed that the pH level ranged from 6.65 units to 6.83 units, filterable solids averaged to 0.211 g, dissolved solids averaged to 30290 mg/L, and total solids averaged to 0.881 grams.
For the coliform bacterial determination, the water samples were tested using the Multiple Tube Fermentation Method to Determine the presence of the coliform bacteria.
This method utilized Lactose broth tubes for the presumptive test and Brilliant Green Bile solution for the presumptive test of each water sample.
Results showed that the average number of positive test tubes ranges from three (3) to five (5) in the presumptive test and two (2) to four (4) in the confirmative test in all of the six sampling stations.