Quantitative projections on climate-induced water quality degradation are sparse. Aminomethylphosphonic acid and glyphosate are projected to exceed drinking water quality standards in dry years in a high-emissions scenario in the Meuse River in Europe by 2050 . From 2020 to 2050, based on scenarios RCP2.6, RCP4.5 and RCP8.5, the incidences of total nitrogen pollution are projected as 97.3, 97.1 and 94.6%, respectively, in drought-flood abrupt alternation months compared to 69.3, 69.7 and 67.5% in normal months in the Luanhe River basin in China . From 2012 to 2050, freshwater river area is expected to decrease from 40.8% to 17.1-19.7% under different sea level rise scenarios in the southwest coastal zone of Bangladesh . Under the warming scenario of +4.8ºC increase by the end of the century, the average nutrient abundance is projected to triple in a shallow lake in the northwest of England .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report