The other 3 bathrooms would provide lots of toilet flushes, and we usually put in some rid-x every so often. One of our washing machines drains into a seperate catch basin, so we don’t usually have to worry about the bleach thing, as we use that machine for the clothes that are bleached.
The other washing machine drains into the septic, but I don’t usually put bleach into that machine. I do however, use a small amount of bleach routinely during flu season to decontaminate dishes, and then rinse off the bleach before draining them.
After showering, and then cleaning the shower room with bleach, the drawback could be that you have to open the door and walk back through the room with the sink.
Might have some danger of recontamination there. Although touching the doorknobs would be the most likely source, and that could be decontaminated on the way out with out touching it, until it has been cleaned with bleach.
A box of Lysol wipes on either side of the door would handle that possible decontamination problem.
Or an old Swipes box with tough tissues, on either side of the door to which you could add more 10 - to -1 diluted bleach on your own (Cheaper-just as effective).
Remember : D I Y , and save .