A study of drinking water quality in Perlis
Abstract
Quality drinking water is an important aspect that needs to be emphasized. Realizing the
importance of drinking water quality, the study of drinking water quality in Perlis was
conducted. This study focuses on the quality of treated water that supplied for domestic use
in Perlis. Sample of treated water are taken from the selected end user in Perlis. Four
sampling points have been selected which is at Kuala Perlis, Kg. Padang Malau, Chuping,
and Arau. All four listed sampling points are representing difference raw water resources
which Kuala Perlis from Timah Tasuh Dam, Kg. Padang Malau from Semadong
groundwater borewells, Chuping from groundwater borewells and Arau from Muda and
Pedu Dam that mix with Arau groundwater. The sample of Reverse Osmosis (RO) water at
Kuala Perlis was also taken for testing. All the sample of drinking water were tested in situ
and ex situ for selected parameter. In situ parameters measured are temperature, pH, nitrate
(NO3
−), turbidity and Total Dissolves Solid (TDS). The parameters for ex situ are Total
Coliform, E.coli, Zinc (Zn), Chromium (Cr
6+
) and Manganese (Mn). Most of the testing
procedures carried out for this research followed the Standard Method for the Examination
of Water and Wastewater, American Public Health Association (APHA). The tested
drinking water are categorize with excellent, satisfactory, less satisfactory and poor based
on their quality. According to the acquired data, the quality of water in Arau, Chuping and
RO water is in satisfactory circumstances, while Kuala Perlis and Semadong is in poor
circumstances.
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