[Sal Santamaura]

...Kodak advises in some of its literature not to pour photo chemicals into a septic system, but if it was that important, wouldn't they, for the home darkroom user, put proper disposal info right on the labels of their chemistry, not just in some obscure literature?...

In my opinion, Kodak's legal department is much more competent than its executive management. Apparently, Kodak covers its tail by marking the products so home users aren't even addressed. The packages of XTOL I have on hand, although sold through retailers to the general public, are labeled "FOR COMMERCIAL AND INDUSTRIAL USE ONLY."