The wastewater treatment facility upstream has exceeded its organic waste…

June 29, 2026Connecticut Valley

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The wastewater treatment facility upstream has exceeded its organic waste limits every quarter for two years now, most recently running 47% above permitted levels this spring. That kind of chronic discharge strips dissolved oxygen from water that will warm further through summer — a slow asphyxiation of the river.

Yet (Hagenius brevistylus) was observed feeding just downstream last week. These are larvae of gravel-bed rivers, aquatic nymphs that demand clean substrate and adequate oxygen — exactly what chronic waste loading works against. The two signals point in opposite directions. Either this individual is a holdover, sustained by clearer water just downstream, or conditions here have not yet degraded past the threshold where the species can still persist. Either way, the presence is fragile.

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