TY - GEN T1 - Level of Trihalmothanes (THMs) in the Klang Valley`s drinking water: A preliminary survey A1 - Khairulmaini Osman Salleh, Department of Geography, University Malaya LA - English PB - Lee Ming Press Company YR - 2014 UL - http://discoverylib.upm.edu.my/discovery/Record/oai:http:--agris.upm.edu.my:0-7130 AB - The interior region of Sabah derives much of its water resource from the Pegalan-Padas River system. A survey of the water quality of the Pegalan-Padas River and two of its tributaries was performed in 1992. The study involved analysis of physical water quality parameters, nutrients, insecticides, heavy metals and coliform bacteria. The results showed that heavy metals (Cd, Cu, Fe, Mn, Pb, Zn)of the river water was far below the permitted levels for drinking water. However, the unfiltered river water was contaminated by low level of organochlorine insecticides especially DDT (maximum total DDT : 0.23 ug/L). Certain streches of the river were also affected by high level of suspended solids (average 35.0 - 53.6 mg/L). Based on river classification procedures of the Department of Environment, most parts of this river system fall under Class II, indicating water quality which is suitable as a source of drinking water. KW - WATER QUALITY KW - WATER ANALYSIS KW - WATER POLLUTION KW - RIVERS KW - HEAVY METALS KW - ZINC KW - ANALYTICAL METHODS KW - DRINKING WATER KW - CLASSIFICATION KW - SOIL CLASSIFICATION KW - SAMPLING KW - METHODS KW - PH KW - SOIL PH KW - PESTICIDES KW - COLIFORM BACTERIA KW - QUALITE DE L`EAU KW - ANALYSE DE L`EAU KW - POLLUTION DE L`EAU KW - COURS D`EAU KW - METAL LOURD KW - TECHNIQUE ANALYTIQUE KW - EAU POTABLE KW - CLASSIFICATION DES SOLS KW - ECHANTILLONNAGE KW - METHODE KW - PH DU SOL KW - PESTICIDE KW - BACTERIE COLIFORME KW - CALIDAD DEL AGUA KW - ANALISIS DE AGUA KW - POLUCION DEL AGUA KW - CURSOS DE AGUA KW - METALES PESADOS KW - CINC KW - TECNICAS ANALITICAS KW - AGUA POTABLE KW - CLASIFICACION KW - CLASIFICACION DE SUELOS KW - MUESTREO KW - METODOS KW - PH DEL SUELO KW - PLAGUICIDAS KW - BACTERIA COLIFORME ER -