This study compared the water quality supplied to dairy cows using a conventional and a magnetized
automatic water trough. A magnetized device was attached to water troughs and water quality
characteristics (hardness, bacterial counts, mineral contents and water pH) were estimated before
and after its usage and compared with conventional system. The bacterial counts were significantly
reduced in water supplied through magnetized water trough compared to that supplied through
conventional system. Iron contents in water were reduced with the usage of magnetized water
trough. Hardness, pH, chlorine, fluorine and nitrite contents of water were not affected by
magnetization of water.