[1]Waterbez Sdn Bhd Jalan Bandar 11 Taman Melawati Kuala Lumpur 53100 Malaysia;
[2]Menara Razak University of Technology Malaysia Kuala Lumpur 54100 Malaysia;
[3]Malaysia-Japan International Institute of Technology University of Technology Malaysia Kuala Lumpur 54100 Malaysia;
Water treatment plant; operation; pump performance; upgrading;