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Twenty-two attorneys general urged a federal court Wednesday to reject a proposed $10.3 billion settlement over contamination of U.S. public drinking water systems with potentially dangerous chemicals, saying it lets manufacturer 3M Co. off too easily.

Thursday marks the restart of widespread testing for PFAS chemicals in New Hampshire’s public water supplies, after a year-long delay due to a lawsuit…

New Hampshire's strict new limits on PFAS chemicals have been in effect for more than a month now. Officials say the regulations are based on sound…