Really dear boy? I would like to point out that in the majority of bathrooms there is cleaner that rushes through the bowl to cleanse it so you might be right. After flushing toilet water is actually quite clean.
As for the "fecal matter in the soap" thing I am going to come right out and say that your alleged study is full of fecal matter.
Fecal matter would be solid and visible. I wonder if they mean E.Coli which is vary common and of different strains. Not all of which are fecal matter.