De acordo com o site da Keurig :
K-Cup® and Vue™ packs do not contain BPA and are constructed using FDA-approved food safe materials. We also use FDA-approved food safe materials in our K-Cup® and Vue™ brewing systems, and neither system contains BPA within its water paths (as of January 1, 2010 for our K-Cup® system).
Por isso, eu diria que você não precisa se preocupar, e se estiver preocupado com o consumo de BPA, certifique-se de ter uma máquina mais nova!