Biological and Chemical Characteristics of Groundwater in a Rural Settlement Area of Davao Oriental

Janeth C. Tayone

Abstract


The study was conducted to assess the quality of groundwater in Barangay Badas, City of Mati, Davao Oriental. Specifically, this included the biological characteristics – Most Probable Number (MPN) of coliforms per 100 mL sample, chemical characteristics - pH, total dissolved solids, total hardness, chloride, nitrates, sodium, magnesium, and calcium.  The t-Test was used for data analyses in comparing the experimental mean with the Philippine National Standards (PNS) and World Health Organization (WHO) standard for drinking water. The results for Most Probable Number (MPN) of coliforms per 100 mL sample and sodium were above the maximum level.  The pH levels were within the safe limit for drinking water. The results for total dissolved solids, total hardness, chlorides, nitrates, magnesium and calcium varied from one station to another ranging from below to above the standard values.  These results serve as baseline data for the local government units in formulating policies for public safety and sustainable management of the groundwater resources. 


Keywords


Biological; Chemical; Groundwater; Philippine National Standard; Rural settlement; Water quality

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