The study of the distribution and motion of groundwater is hydrogeology, of glaciers is glaciology, of inland waters is limnology and distribution of oceans is oceanography. Ecological procedures with hydrology are in the main focus of ecohydrology. Pollution contains discharged solutes (chemical pollution) and discharged coolant water (thermal air pollution). https://kevalaniru.com/why-eco-friendly-water-is-the-best-choice-for-my-little-ones/