Download Environmental Data

Boston Harbor and Rivers

Boston Harbor	Neponset River	Charles River	Mystic River
Harbor Map	Neponset Map	Charles Map	Mystic Map
Harbor Data Summary	Neponset Data Summary	Charles Data Summary	Mystic Data Summary
Harbor Physical Data	Neponset Physical Data	Charles Physical Data	Mystic Physical Data
Harbor Clarity	Neponset Clarity	Charles Clarity	Mystic Clarity
Harbor Nutrients	Neponset Nutrients	Charles Nutrients	Mystic Nutrients
Harbor Bacteria	Neponset Bacteria	Charles Bacteria	Mystic Bacteria

Detailed Sampling location map

Sampling station latitude-longitude locations (Excel)

Boston Harbor Beaches

Fact Sheets (PDF)	Monitoring Locations	Download Data (Excel)
Constitution	Constitution Map	2001-Past Season (All beaches)
Castle Island Beach	Castle Island Map
Pleasure Bay	Pleasure Bay Map
City Point	City Point Map
M Street	M Street Map
Carson	Carson Map
Malibu	Malibu Map
Tenean	Tenean Map
Wollaston	Wollaston Map

Massachusetts Bay Bacteria

MWRA monitors bacteria at locations at various distances from the Deer Island Treatment Plant outfall in Massachusetts Bay (see station map). Water samples are analyzed for sewage indicator bacteria: fecal coliform and Enterococcus. Fecal coliform is used by the Massachusetts Division of Marine Fisheries to monitor water quality in shellfish areas. Results consistently meet the most stringent state water quality standards.

Mass. Bay Bacteria Data (Excel)
2001 - Present