Edit: It would kinda be bittersweet for me but I think ultimately I would cry tears of joy which can then be cleansed by Ganges so its cool
Just not polluting it further would do it. It’s a river, so almost everything will get washed away and within a couple decades it will be pretty clean.
Where does all the previous filth and sediment collect?
That’s the fun part! It’s no longer your problem. It’s outside the enviroment
But what does that MEAN?!
Its mass is conserved, where does it transition to?
It gets towed (by the river) beyond the environment
Nothing out there but sea, birds, and fish.
And a hundred thousand tons of crude oil.
And a fire.
Most organic things will get converted to biomass/CO2/NH3/… in the end. Inorganics will probably be sediment at some point.
