so far I remember, 10 years ago condition was not this miserable, 20 years ago, as a kid I used to go to bagmati river and could still see fish swimming under the rock, this deterioration of rivers in kathmandu has to do with poor waste management and over population.
And yes, metta, I don't know when you were born, but I had once seen clean river water, be it bagmati or bisnumati,
this is not something I've seen before,.. this is really terrible.