INTRODUCTION

Significance of the Study

With two-thirds of the earth’s surface covered by water and human body consisting of 78% of it. It is evidently clear that water is one of the prime elements responsible for life on earth. It is necessary for the digestion and absorption of food, help maintain proper muscle tone and supply oxygen and nutrients to cell (Quiles and Quiles, 1996). A drinking water is defined as water intended primarily for human consumption but which has another domestic purposes. It may consume directly from the tap for beverages and food prepared with water. But according to Hippocrates, water supplies may also be contaminated with organisms that can cause disease. Among diseases that may transmitted by water contaminated by bacteria, viruses or protozoa are typhoid and cholera, gastroenteritis, paratyphoid fever, and infectious hepatitis. These kinds of diseases are caused by microbiological parameter. One of the microbiological parameter is the coliform bacteria. Coliforms may be associated with the sources of pathogens contaminating water. It is a broad class of bacteria found in our environment, including the faeces of man and other warm-blooded animals. The presence of coliform bacteria in drinking water may indicate a possible presence of harmful causing disease. Purok Cueva is one of the Puroks comprising Barangay of Pisan. The source of the said Purok is a well. Water taken from well for human consumption can be possible contaminated. According to Municipality Inspector, there are reported incidents of waterborne disease that can be attributed from unsafe drinking water.
Moreover, a group of researcher from Department of Civil Engineering of the University of Southern Mindanao (USM) , Kabacan, Cotabato was collected a sample of water from the three sources of drinking water at Purok Cueva, Barangay Pisan, Kabacan,