1804 1st simple water supply for 10,000 people 1894 1st reservoir – Waterfall Reservoir 1919 Water Department in George Town City Council 1929 1st treatment plant – Air Itam Treatment Plant 1962 1st dam – Air Itam Dam 1973 State waterworks authority – Pihak Berkuasa Air (PBA) / Penang Water Authority 1999 Corporatisation – Perbadanan Bekalan Air Pulau Pinang Sdn Bhd (PBAPP) / Penang Water Supply Corporation 2002 Public Listing – PBA Holdings Bhd (PBAHB)