WASHINGTON, D.C. (Al Jazeera): US President Barack Obama has declared a federal emergency over the Michigan city of Flint’s lead-poisoned water crisis that has affected its almost 100,000 residents, with children suffering the most, over almost two years. The White House on Saturday authorized the Federal Emergency Management Agency (FEMA) to coordinate disaster relief efforts to “alleviate the hardship and suffering” of Flint’s residents. The announcement came days after Michigan Governor Rick Snyder asked Obama to issue the emergency declaration. The crisis erupted after Flint stopped receiving its water supply from the neighboring city of Detroit due to unaffordable hikes in rates and started sourcing from the local Flint River in April 2014 as a cost-cutting temporary measure. Snyder called in the country’s national guard to help provide potable water for the city’s households after declaring a state of emergency over the crisis.