• Mercer International halted wastewater discharge at its Rosenthal mill during a restart from a four-week maintenance shutdown.
• The move followed a report of discoloration near the effluent outfall on Oct. 1, prompting wastewater storage in on-site buffer tanks.
• Local authorities imposed a temporary swimming ban in the southern area of the Bleiloch reservoir as a precaution.
• Discharge from the on-site treatment plant resumed gradually on Oct. 3 in coordination with environmental regulators.
• Preparations continued to restart pulp production at the mill.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Mercer International Inc. published the original content used to generate this news brief on October 06, 2026, and is solely responsible for the information contained therein.