If lota drops of water drop on your clothes, does it make clothes impure?

Many asian muslims use lota(vessel) to wash their private parts. When I fill it up, the water run downs the outside and while washing the drops from outside drop on the under garments, this has lead a confusion of if the clothes are pure or impure. The Lota is always on the floor of the toilet. is my clothes impure and if I put my pants back on with those drops, do I need to take ghusl?