impure clothes

Washing impure clothes without squeezing

Q: A female servant washes clothes in my home. My wife puts both pure and impure clothes in a bucket and adds water and washing powder. Servant washes those clothes on washroom floor with a detergent. She throws the impure water from the bucket and fills that with new water. She does not clean the bucket before filling with new water. She rinses the washed clothes in that water. Again throws water and fills with new water without cleaning the bucket and again rinses clothes for second time. Also she does not squeese the clothes after rinsing. Are these clothes be considerd pure? 

As I have doubts about this method of washing , I wash my clothes seperately. But my wife's wet clothes washed in the above method come in contact with my wet clothes when we place them to dry. If my wife's clothes are considered impure, do my clothes also become impure as my wet clothes come in contact with them.

Washing impurity

Q:

1. At times we put impure wet clothes in the machine and it touches the side of it, when removing it the clothes touches the same part wich the impure clothes touched, does it become impure again.

2. If 1 drop of urine falls on a wet cloth, is the whole cloth impure or only that part?

3. If impurity is found on clothing that is already washed in a machine, must all the clothes be washed again?