Past and continuing urbanization of the 17,600-acre Pennichuck Brook Watershed has presented a continual challenge for maintaining and improving water quality. In recognition that land acquisition has limited usefulness in this large watershed, Pennichuck has taken a land use management approach. Pennichuck’s most recent tool to address Pollutant loads from the watershed is the Watershed Restoration Plan. This plan uses a Total Maximum Daily Load (TMDL) approach to identify sources and quantities of pollutant loads, acceptable pollutant loads, and methods to reduce them.
Pennichuck has carried out various other initiatives to improve the health of the watershed including technical studies, construction projects, and community outreach programs (see the BMP information on the Watershed Interactive Map).