Priority 1: Reduce Pollution

Reducing Stormwater and Nutrient Pollution Many rivers, streams, and bays in the Piscataqua Region have become polluted from paved areas, lawns, septic systems, farms, and wastewater treatment plants. PREP works with partners to tackle these issues by facilitating sustainable development planning and practices, while fixing hotspots for stormwater and nutrient pollution.

Rain Garden

Priority 2: Conserve Natural Areas

The best way to protect clean water and wildlife habitat is to preserve natural areas within and adjacent to wetlands, waterways, drinking water source areas, and critical wildlife habitat areas. A top priority for PREP is to facilitate and support long term protection of natural areas through education, proactive local regulations, and permanent voluntary land protection projects

mist at sunrise, Milton, NH, by-V.-Long

Priority 3: Restoring Rivers  and Bays

Pollution and dramatic land use changes in the Piscataqua Region have damaged vital habitats. In recent decades oysters have declined by 95% and eelgrass has disappeared from tidal rivers. Dams and culverts in all coastal rivers block fish migration and degrade habitat. PREP and its partners are committed to restoring healthy oyster reefs, fish populations, eelgrass beds, saltmarsh habitat and natural flow in all waters.


PREP is part of the U.S. Environmental Protection Agency’s National Estuary Program, a joint program between local, state and federal agencies established under the Clean Water Act with the goal of protecting and enhancing nationally significant estuarine resources. PREP is supported in part by an EPA matching grant and is housed within the School of Marine Science and Ocean Engineering at the University of New Hampshire.