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The Boston Globe


A steady flow of troubles for the long-foul Mystic

River draws scrutiny, but cleanup a complex challenge

SOMERVILLE — Pity the Mystic.

The gritty 7-mile river that flows from Medford and Arlington to Boston Harbor rarely earns better than a “D” on the federal government’s annual water quality report card. Raw sewage still spews into the river during severe storms — including almost 4 million gallons in December. Vast mats of invasive water chestnut clog the surface in places.

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