Many people probably thinkg that water quality has been declining, due to the scare campaigns around it. Well in fact LAWA has found many rivers are less polluted than a decade ago, and very few are worse.
The full report is here.
So no matter which of the eight indicators you use, they all show more rivers have improved than degraded.
This doesn’t mean there isn’t more work to do. Of course there is. But it shows things impro