- The Water Resources Commission is responsible for developing, coordinating and overseeing the Commonwealth's water policy and planning activities.
- The Department of Environmental Protection (MassDEP) has many water-related programs, such as the Drinking Water Program that ensures safe drinking water for Massachusetts' residents, the Water Management Act that authorizes the regulations of the quantity of water withdrawn from both surface and groundwater supplies, and the Watershed Management Division that is charged with monitoring and regulatory activities that affect water quality and quantity within the state's major river basins.
The Division of Water Supply Protection within EEA's Department of Conservation and Recreation (DCR), is comprised of two Offices. The Office of Watershed Management manages and protects the drinking water supply for distribution by the Massachusetts Water Resources Authority for 2.2 million residents of Massachusetts. The Office of Water Resources promotes water quality and conservation through several functions, including coordinating the review of proposed interbasin transfers, administering cooperative programs with the USGS, and managing the Rainfall Program.
- Office of Technical Assistance (OTA) offers a range of assistance and information to help facilities improve water use efficiency, comply with federal and state regulations, reduce wastewater discharge and implement other effective water conservation measures.
- The Department of Fish and Game is responsible for the Commonwealth's marine and freshwater fisheries, wildlife species, plants, and natural communities, as well as the habitats that support them. The Division of Fisheries and Wildlife (MassWildlife) is responsible for the conservation, restoration, protection and management of fish and wildlife resources for the benefit and enjoyment of the public. The Division of Marine Fisheries manages salt water fishing, including shell fishing and lobstering for recreation and commercial harvesting. The Riverways Program works to promote the restoration, protection and ecological integrity of the Commonwealth's rivers, streams and adjacent lands. The Office of Fishing and Boating Access provides boat and canoe access sites, shore fishing areas, and sport fishing piers at more than 250 locations on coastal waters, great ponds and rivers.
- CZM's mission is to balance the impacts of human activity with the protection of coastal and marine resources. As a networked program, CZM was specifically established to work with other state agencies, federal agencies, local governments, academic institutions, nonprofit groups, and the general public to promote sound management of the Massachusetts coast. CZM is funded primarily through the Commonwealth of Massachusetts, the National Oceanic and Atmospheric Administration (NOAA), and the U.S. Environmental Protection Agency (EPA).
- The Secretary also serves as chair of the Board of the Massachusetts Water Resources Authority (MWRA). The MWRA provides water and sewer services to 61 communities primarily in the Boston Metropolitan Area, serving over 2.5 million people. The MWRA has successfully undertaken the task of cleaning up Boston Harbor and is now implementing a program to ensure the long-term protection of the Drinking Water Supply.
- The United States Geological Survey (USGS) is a federal agency that provides reliable scientific information to manage water, biological, energy, and mineral resources to enhance and protect our quality of life. USGS compiles information on groundwater and assesses national water quality on a watershed basis.