EPA has created new maps of the lower Merrimack River that provide an overview of historic water quality data (E. coli concentrations); flood zones, precipitation, and combined sewer overflows (CSOs). In addition, the maps include information provided by local residents of known boating, swimming and fishing sites, localized flooding, as well as illegal dumping sites on the River. Collectively, city officials and local water associations can use this information to show potential locations where residents may be exposed to poor water quality and will be able to target appropriate communications through signage, flags or fact sheets.

• Lawrence, MA - Environmental Justice Variables, Flood Zones, Water Quality Data, and Potential Exposure Locations (PDF)(1 pg, 7 MB)