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The world’s biggest devastation is currently due to disasters; their consequences range from deaths and physical damages of infrastructures to environmental, ecological and economic losses. Water systems are critical infrastructures and are recurrently affected by the impacts of disasters. In Tanzania, these events play a part in infrastructures failures; the country has experienced 266 different disasters contributing to 13,288 deaths, 57,556 injuries, and damages valued at 465.79 million USD for the period from 1900 to 2016. Water systems, in particular, are a subject of exposure to disasters, their resilience has been tested and has shown different responses. Of concern is the El Nino episodes of 1992-1993 and 1997-1998 which had significant impacts nationwide regarding economic losses, power blackout and rationing, widespread water-related diseases, infrastructure destructions and others. As such, different …