That site is largely rubbish. Although chrome compounds _are_ a
problem, and there will be chrome salts in the waste from long-term
electrolysis baths that use stainless anodes, it's false (and
deceptively so) to start shouting about hexavalent chromium.
I went through this whole thing some time ago. Do an advanced search
using my name and "electrolysis" in the subject line. The best group
to talk to about this is the chemists, not the woodworkers (though we
have a few chemists among the group).
[sorry for wordwrap]
Most all the chemists say the hexavalent chromium scare from the movie
was a bunch of crap, and that electrolysis output of it is negligible.
But I'm no chemist, so you should read more on your own (from
chemists, not WWers) and decide yourself.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.