A state inspector photographed ponded water covered in algae blooms at the Ridgewater wastewater treatment site in Mount Juliet, Tenn. on Jan. 8, 2024. (Photo: Tennessee Department of Environment and Conservation)

Environmental groups say they plan to sue Wilson County’s wastewater authority over a Mount Juliet facility that state records show has repeatedly violated state rules and discharged polluted wastewater into a tributary of the Cumberland River.

The wastewater treatment system serves about 89 homes in the Ridgewater Estates and Camelot Cove subdivisions. It funnels sewage into a sand and UV filter before piping remaining wastewater into a “drip field,” where it is meant to be dispersed over a large area to allow soil to act as a natural filter.

But the Ridgewater facility has r

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