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FLINT, MI - JANUARY 21: Fred the handyman at the Shiloh Commons installs a new water filter in a residence January 21, 2016 in Flint, Michigan. The city's water supply had been contaminated by lead after a switch from Lake Huron to the Flint river as a source in April, 2014. At a local fire station, residents were provided with water testing jugs, filters and clean water brought in by the National Guard. Residents also brought in water samples from their homes which would be sent out for lead testing. (Photo by Sarah Rice/Getty Images)
FLINT, MI - JANUARY 21: Fred the handyman at the Shiloh Commons installs a new water filter in a residence January 21, 2016 in Flint, Michigan. The city's water supply had been contaminated by lead after a switch from Lake Huron to the Flint river as a source in April, 2014. At a local fire station, residents were provided with water testing jugs, filters and clean water brought in by the National Guard. Residents also brought in water samples from their homes which would be sent out for lead testing. (Photo by Sarah Rice/Getty Images)

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Former Flint Mayor: 'Bait-and-switch' led to crisis

Former Flint Mayor Dayne Walling discusses the decisions that led to the city's current water crisis.

Former Flint Mayor: 'Bait-and-switch' led to crisis

Former Flint Mayor Dayne Walling discusses the decisions that led to the city's current water crisis.