 Due to a large fire at Vredestein in Enschede the channel section was closed for weeks to prevent spreading pollution.Research by water company Vitens in February 2008 showed that the water from the Twentekanaal is no longer suitable for water.The Twentekanaal has been widened and deepened from a CEMT-class IV to a CEMT-class Va waterway between 2004 and 2007.