Hi Tom! Informative as usual! One thing I might point out is that depending on where you live &amp; who your legal advisor is, the term "Waste Water" is very different from the definition of "spent cooling water"  or other such terms. To all our friends &amp; fellow subscribers worldwide, it would be wise to check on what your country/State/Province defines as what. It might spare you from unnecessary worry, and might also spare you from taking unnecessary risk!