Septic tank being pumped tomorrow....

Could not help but wonder what is done with the.....contents? Todd, the installer was recently here to check on things for me. I asked Todd and he made mention that some of the pumpers will treat it with a chemical of sorts prior to spreading it on the ground. Did a quick internet search and read that it is often sold to farmers as a fertilizer....article said that if the food you are purchasing is not organic it very well may have had septic tank contents as a fertilizer.....

http://home.howstuffworks.com/home-improvement/plumbing/septic-tank-cleaning2.htm

Now that is something I could have live the rest of my life without knowing..