Developing nations are witnessing rapid pace of urbanization since the second half of 20th Century. According to United Nation, urban population will increase more than 2.5 billion in between 2010-2050 in less developed regions. More and more people will now live in cities. Climate change will invariably affect those cities, as they are mostly located in climate sensitive zone i.e. either on flood plain or on coastal zone. The urban water system, which includes water supply, wastewater treatment and storm water drainage, is particularly in risk, as climate change will manifest itself through the alteration of hydrological cycle. The rapid pace of urbanization is already posing growing challenges towards maintaining a safe and adequate water supply and wastewater services for urban residents. In developing nations the core aspects of urbanization is the fastest urban population growth together with inadequate planning, pollution, poverty, competing demands on resources, all contributing to water stress. Urban water consumption is likely to be doubled by 2025. Cities are also characterized by the predominance of impermeable surfaces-which are less capable of absorbing increased rainfall and therefore increase the intensity of rainfall run off- and are prone to urban heat island effect, which amplifies the heat. Integrity and functionality of water supply system, wastewater system and storm water system will be affected to varying degree. When prolific growth of urbanization is happening in many developing nations with dwindling water resources, city and water managers are left with no choice but to think of adapting climate changes in their prospective planning. Though uncertainty remains regarding the expected manifestation of climate change, yet the potential impacts of it on urban water systems cannot be ruled out. Such anticipated impacts has a considerable magnitude of knock-on-effect on the other urban systems as water plays a pivotal part of functioning those system and of maintaining the quality of life in wider sense. “Adaptation Strategies” will help in reducing or avoiding impacts of climate change, at the same time some “Mitigation Strategies” can be co-opted to keep a check on the production of Green House Gasses by the operation of urban water utilities.