It turns out that not only is fish a great source of Omega 3 fatty acid, fish is easily fortified with pharmaceuticals that treat anything from high blood pressure or the risk of unwanted pregnancy to high cholesterol and bipolar disorder. How, you ask?
Waste waster treatment plants used to be called sewage treatment plants but no one wanted a sewage treatment plant on the banks of their river so we began calling them "Waste Water Facilities". Waste water facilities do well at allowing the human waste collected for treatment to reach a neutral state of organic activity with out the spectrum of bacteria and viruses that are present in raw sewage. Treated sewage is used many ways, some of it is processed beyond the "treatment" stage by breeding worms in it and then capturing the discharge from the worms to use as organic fertilizer; what happens in Orlando, and other cities in Florida, is that this worm step is not taken — the treated sewage is released into the river.