It is a meta study, but in this field I would take a hard look at the selected studies before I trust those results (I did not take a hard look, so I can't say)

It is a meta study, but in this field I would take a hard look at the selected studies before I trust those results (I did not take a hard look, so I can't say). A 37% decrease of something that ruins drinking water is surely better than nothing, but only an incremental improvement. It can easily be offset by agriculture growth within the next decades.