Just curious.. is any facility or company that anyone knows of culturing their bicarb jugs?

We bleach weekly. Rinse Daily.

We cultured the jugs when we went to a weekly disinfect. We did a 4 week validation testing daily the first week, then 3, 2, and 1 time disinfecting weekly. Once we were able to confirm that they would last a week between disinfects there is no need to culture them again unless you have a major problem then you might need to re-validate.