
Wastewater Symbiosis Study Tour to Denmark
June 15–21, 2025
Turning Treatment Plants into Value Factories
CSI, in partnership with the Water Environment Federation, will host a Wastewater Symbiosis Study Tour in Denmark for public and private wastewater leaders from the Pacific Northwest and beyond this summer to explore Industrial Symbiosis.
Industrial symbiosis, pioneered in Denmark, is a ground-breaking approach to infrastructure and economic development, where one sector’s wastes - energy, water, and materials - become valuable resources for other businesses.
For many communities, wastewater treatment plants are among their most important capital assets. Denmark is showing how wastewater treatment plants can serve as great platforms for local Industrial Symbiosis innovation, creating value from 'waste'.
This tour builds on the successes of the first-of-its-kind Wastewater Symbiosis Study Tour in September 2024. Our 2024 alumni returned to the Pacific Northwest fired up and ready to implement Industrial Symbiosis solutions. Many of these projects are ongoing and continuing to partner with Danish experts to implement real world change!




Study Tour Key Information:
Tour Dates: June 15-21, 2025
Tuition: $5,800, includes all programming, lodging, transport, and most meals within Denmark