]. Findings from such localized mapping can be brought to the attention of the public and policy makers. This information has potential to increase awareness of the immediacy of pollution’s continuing health threats and thus to mobilize citizen action and catalyze pollution prevention.estimate the impacts of ambient PMair pollution on disease, death and children’s cognitive impairment at the local level in each city and town across Massachusetts.
In the case of towns for which no county-level data available were available, we applied data from the nearest adjacent county. Thus, for four of the 14 counties - Norfolk, Barnstable, Dukes, and Nantucket – no monitoring data were available. Therefore, for these counties, we used the values in contiguous counties to estimate pollution levels. For instance, Norfolk County shares borders with Bristol, Worcester, Middlesex, Suffolk, and Plymouth counties. The mean PM2.