New test results show lead levels in Kalamazoo’s water system have dropped. The federal limit for lead in water is 15 parts per billion. Last time the city tested, in 2014, Kalamazoo’s lead level was 13 parts per billion. Now it's down to 4 ppb. 13 ppb was close enough to worry Shannan Deater, Kalamazoo’s Environmental Services Programs Manager. She says some of the higher lead results in 2014 weren’t really a good, representative sample. Documents obtained under the Freedom of Information Act