The Evolution Of Water Purification By Divit Ram 2000 BCE Household Sand Filtration 1500 BCE Coagulation Introduced 480 BCE Cloth Filtration (Hippocrates Sleeve) 1774 Discovery of Chlorine 1776 First Carbon Filter 1804 The 1st Water Treatment Plant 1906 Ion Exchange Filters Introduced 1908 Water Disinfection 1910 First UV (Ultraviolet) Filter
