I would imagine that you or your company purchasing or service section could contact a business in your area that specialises in water quality, and it will be able to assist you with appropriate scale inhibiting water conditioning apparatus for your particular situation. You probably need to be confident that your company is willing to spend the money on such (which of course should go hand in hand with any commercial coffee making situation)....ie, the equipment shouldnt have been set up without it in the first place, and setting up without is a false economy because any "saving" from not fitting filtration equipment first up, will be added back to the running cost and then some, later on down the line as you have found, not to mention the inconvenience and frustration when the equipment suffers from the lack of good water in use.....
If you do not know who to contact in Canada wrt NS service, just email them in Italy and ask them who the importer is for Canada / US, and take it on down the line from there. I imagine their address will be something like nuovasimonelli.it
very first CS site sponsor.