Katadyn North America, Inc.
9850 51st Avenue North
Minneapolis, MN 55442 USA
This is actually less than 1/2 nm from where I used to live. They don't list locations other than US and Canada
but here is the contact information I could find.
: 800 755 6701 option #3; International callers may use
763 746 3500
Fax: 763 746 3540
There was some consolidation in the industry as Katadyn
was not really the original manufacturer as I think they used to be Resource Recovery or Recovery Resources located in St Louis Park, Minnesota
. I have a different product for fresh water that I used for mountaineering way back when I was not sailing. I know I went to the headquarters about some warranty problem that they solved
eventually after 2 replacements
. I really think that the same people are connected so you might try them.