Water quality grades are in for Boston-area rivers: How did the Charles, Mystic and Neponset score?

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.

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

Boston – Page 27 – Boston Herald

Neponset River Report Card: 2021 – Neponset River Watershed Association

2022 Charles River Report Card

Massachusetts – Page 33 – Boston Herald

Boston – Page 27 – Boston Herald

EPA report card on Charles, Mystic, and Neponset rivers shows some good grades, but trouble spots earn C's and D's - The Boston Globe

2021 Charles River Report Card

Environmental Protection Agency – Boston Herald

Neponset River Report Card: 2022 – Neponset River Watershed Association

Announcing the 2022 Three Rivers Report Cards — Mystic River Watershed Association