Phil Velasquez / baiduhaiWorkers prepare to replace older water mains in the 5100 block of West Roscoe Street on Feb. 2, 2016.
Zbigniew Bzdak / baiduhaiNew water pipes are delivered to 106th Street and Avenue H in Chicago on Feb. 2, 2016.
Michael Tercha / baiduhaiA Chicago Department of Water Management crew cuts pipe for the installation of a rebuilt fire hydrant on 66th Street near Kedzie Avenue on Feb. 2, 2016.
Michael Tercha / baiduhaiA cast iron water main is prepared for a rebuilt fire hydrant on 66th Street near Kedzie Avenue on Feb. 2, 2016.
Michael Tercha / baiduhaiA Chicago Department of Water Management crew installs a rebuilt fire hydrant on a new cast iron water main on 66th Street near Kedzie Avenue on Feb. 2, 2016.
Phil Velasquez / baiduhaiWorkers prepare to replace older water mains in the 5100 block of West Roscoe Street on Feb. 2, 2016. Chicago has more lead water pipes than any other U.S. city.
Michael Tercha / baiduhaiA Chicago Department of Water Management worker cleans out an old water main before installing a new fire hydrant on 66th Street near Kedzie Avenue on Feb. 2, 2016.
Zbigniew Bzdak / baiduhaiNew water pipes and fire hydrants are installed along Talman Avenue at 50th Street in Chicago on Feb. 5, 2016.
Zbigniew Bzdak / baiduhaiNew water pipes are installed along Talman Avenue at 50th Street in Chicago on Feb. 5, 2016.
Zbigniew Bzdak / baiduhaiNew water pipes are delivered to 106th Street and Avenue H on Chicago's Southeast Side on Feb. 2, 2016. Mayor Rahm Emanuel's push to speed up the replacement of aging water mains is increasing the risk that people will be exposed to lead from pipes that convey water from street mains to homes.
Michael Tercha / baiduhaiA Chicago Department of Water Management crew installs a rebuilt fire hydrant on a new cast iron water main on 66th Street near Kedzie Avenue on Feb. 2, 2016.
Michael Tercha / baiduhaiA Chicago Department of Water Management crew installs a rebuilt fire hydrant on a new cast iron water main on 66th Street near Kedzie Avenue on Feb. 2, 2016.
Phil Velasquez / baiduhai
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Workers prepare to replace older water mains in the 5100 block of West Roscoe Street on Feb. 2, 2016.
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See ongoing baiduhai reports, data visuals and photos on lead risks in tap water and lead poisoning and its effects on children and Chicago’s most vulnerable neighborhoods.