Water quality grades are in for Boston-area rivers: How did the

The annual water quality grades for the three rivers that flow into Boston Harbor -- the Charles, Mystic and Neponset rivers -- were released on Thursday, revealing a mix of progress and sliding scores across the region.

MWRA's Boston Harbor Page

The grades are in–see how water quality fared in your favorite section of the Charles River! — Charles River Watershed Association

Determining the microbial and chemical contamination in Ecuador's main rivers

MWRA's Charles River Page

PRESS — Charles River Watershed Association

Boston – Page 27 – Boston Herald

River Network's State Policy Hub – River Network

Boston – Page 27 – Boston Herald

Charles River - Wikipedia

Water quality in Boston's rivers was mostly good in 2021. But sewage and climate change threats remain

Charles River cleanup improvements 'stalled,' says annual EPA report card

EPA report card gives mixed grades for Charles, Mystic and Neponset watersheds