Water residence can be affected by pollution residence because pollutants can stay longer and become a part of sediments. Pollutants can give harmful effects if these are in great amounts which can cause contamination. Thus, it gives a problem to the whole ecosystem. It can be in a biological, chemical or physical form.
Source: https://archive.cnx.org/contents/2f834f44-aae1-448f-a1ce-bed42c63507f@8/water-pollution
