Energy and Environment

Learn about which pollutants and parameters the agency measures at specific monitoring sites, and why.

The agency prepares inventories on a periodic basis under the federal Clean Air Act and the Massachusetts Global Warming Solutions Act.

Data extracts are raw data from company filings. Information Releases are annual reports from MassDEP.

February 2025

Monthly tick reports show seasonal trends in reported tick bites and tick-borne disease diagnoses in Massachusetts residents.

Data from water quality monitoring buoys in Mount Hope Bay.

Learn about how MassDEP is addressing the presence of per- and polyfluoroalkyl substances (PFAS) in drinking water.

View data on PFAS in wastewater and residuals (residues removed from wastewater during treatment). Data includes report type, facility name, compound, location, and collection date. The data is organized by facility, PFAS compound, and when the sample was collected. There are currently no state limits for PFAS in wastewater and residuals. This dataset is hosted in the Energy & Environmental Affairs Data Portal, an open data hub for state environmental data.

Here, you can find information about how many miles of main and gas services are currently operational in Massachusetts.

Information compiled by the Department of Environmental Protection (MassDEP).