A New England environmental advocacy group is appealing a decision by federal regulators to issue a permit to Manchester’s wastewater treatment plant without limits on PFAS, a group of man-made chemicals.

In a filing with a federal environmental appeals board, the Conservation Law Foundation argues the Environmental Protection Agency did not do enough to analyze and address discharges of PFAS from the treatment facility and did not follow its own environmental justice policies — that is, policies designed to address disproportionate impacts on historically under-served communities.

The Manchester Wastewater Treatment Facility’s new permit requires it to monitor for PFAS chemicals in the wastewater that comes into the plant once per quarter. But it doesn’t put a limit on the level

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