DPW warns sewer system will hit 80% capacity as multiple projects proceed

Jul 28, 2026

DPW Director Tim Barber told the Planning Board a recent flow-and-loading study shows the wastewater plant’s permitted discharge (4.2 million gpd) would be pushed beyond 80% average by a group of upcoming developments, raising the prospect of state-ordered or town-imposed moratoria and substantial capital upgrades.

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Tim Barber, director of the Department of Public Works, told the Diamond Planning Board that a recent flow-and-loading study by Stantec shows the town’s wastewater treatment plant is approaching regulatory thresholds that could trigger mandatory action.

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