Code Yellow: Mustard company reaches agreement with Justice to stop polluting stream

By Lesley Clark | 08/14/2026 02:05 PM EDT

DOJ says Old Dutch Mustard has “spent years polluting” New Hampshire’s Souhegan River.

A mustard manufacturer will pay $50,000 and devise a plan to stop pollutants from reaching a local river to settle federal allegations it violated the Clean Water Act at its New Hampshire headquarters.

Old Dutch Mustard is accused of violating the act more than 1,700 days between November 2019 and February 2026 by discharging acidic pollutants into a tributary of the Souhegan River that runs near its manufacturing facility in Greenville.

The consent decree reached Thursday with the Department of Justice comes just four months after the president of the mustard and vinegar maker was sentenced to 18 months in prison and ordered to pay a $250,000 fine for knowingly discharging a pollutant. The company itself was fined $1.5 million. It did not immediately return a request for comment.

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The latest complaint against the company, filed on behalf of EPA, alleges that Old Dutch failed to comply with its stormwater discharge permit and did not provide timely compliance information upon EPA’s request.