Alaska News

19 Nov 2025

Wärtsilä Water & Waste Achieves 98.2% Compliance in Alaskan Cruise Wastewater Testing

Wärtsilä Water & Waste, part of Wärtsilä, continues to deliver wastewater treatment performance in one of the world’s most closely monitored marine environments through their Hamworthy membrane bioreactor (MBR) systems, according to independent regulatory data from the Alaska Department of Environmental Conservation (DEC).During the 2024 Alaska cruise season, fourteen vessels equipped with Wartsila's Hamworthy MBR systems achieved a 98.2% compliance rate under DEC’s public testing program.