Heavy metal concentration in groundwater of Kampung Ipoh, Tanah Merah, Kelantan

The main objective of present research is to produce the geological map with scale 1:25,000 and identify heavy metal concentration in groundwater. An application of this assessment indirectly can evaluate human health risk effect as well as the level of pollution and the sources of heavy metal levels in groundwater. Kampung Ipoh, which is located in district Tanah Merah, Kelantan, Malaysia, has been chosen as a study area. It is situated in the west part of Tanah Merah district which cover an area of 25 km² and it lies between latitude 05°51’13.28"N to 05°48’30.98"N and longitude 102° 3’45.50"E to 102° 0’54.75"E. The methodology used was mainly based on fieldwork inputs where the fresh rock sample has been collected. All of the data obtained were transferred into (GIS) software before the geological and other thematic maps were produced. Meanwhile, twelve groundwater samples were collected from different wells in Kampung Ipoh during sampling. The in-situ parameters which have been analysed in this research include pH, temperature, turbidity, total dissolved solids and dissolved oxygen. It has been observed by using a multiparameter instrument. Also, six heavy metals were identified (Mn, Fe, Cu, Zn, Ch and Pb) in groundwater by using Atomic Absorption Spectrometry (AAS) method. For the heavy metal concentration in Kampung Ipoh, Tanah Merah, Kelantan, its value was compared with the guideline that has been given by WHO and MOH for drinking quality of groundwater. Schist was found dominant lithology that can be found mostly at the eastern part of study area. The granitic body in the study area could be known as Kemahang Granite. Taku schist is a unit that is in contact with Kemahang Granite along Kampung Ipoh-Ayer Lanas road.