How does this mixing happen? Consider the location of the deluge system and consider its right next to the ocean (which you really really shouldn't be drinking)

How does this mixing happen? Consider the location of the deluge system and consider its right next to the ocean (which you really really shouldn't be drinking). Do you actually think it plausible that any human could get sick when trying to drink their home water due to this discharge? Or are you just being contarian here?