Parts of the Pennichuck Watershed contain some of the most developed land in the state, much of which was developed between 1960 and 1990, before best management practices (BMPs) to treat water quality were required or used. To address the challenge of existing pollution, Pennichuck has been involved in the design, construction, and continued maintenance of several stormwater BMPs within the watershed. These BMPs can be viewed in the Interactive Watershed Map, or in the linked webpage below. Looking to the future, Pennichuck has also worked to evaluate its watershed to find the locations in which additional BMPs will be the most effective.