Impact of mining activity on water quality of Sungai Sokor, Tanah Merah Kelantan

The study is about the impact of mining activity on water quality of Sungai Sokor that located at tanah merah district. the investigation had been done by collecting 10 samples of river water for water quality analysis and 14 samples of outcrop for geological mapping to produce 1:25 000 of geological map of study area. The water sampling for water quality investigation was done according to APHA procedure to make sure the sample was not contaminated. For in-situ analysis YSI 556 Multiparameters was used to measure the temperature, pH, salinity, total dissolve solid (TDS), dissolved oxygen (DO) and electrical conductivity (EC). While for laboratory analysis (physicochemical) some methods had been used to detect a few element such as silver (Ag), aluminum (Al), cadmium (Cd), chromium (Cr), copper (Cu), iron (Fe), manganese (Mn), lead (Pb), zinc (Zn), calcium (Ca2+), magnesium (Mg2+), sodium (Na+), chloride (Cl"), bicarbonate (HCO3'), sulphate (SO4) and potassium (K+) by using a few method, which is titration, spectrophotometer and Atomic Absorption Spectroscopy (AAS). From the result the river was classified from class I - Ill based on Malaysia interim water quality standard, due present of low heavy metal element that though to be natural origin from the rock formation around the study area and just a small influence from the mining activities there. There for Sungai Sokor has not experience extremes pollution and it is suitable for agriculture activities based on Wilcox diagram and for domestically usage the water need to be treat first.