I have moved to a new city in India wherein I work in an office with 60 Hindus and just 1 other Muslim.
Moreover, I play football with Hindus which makes my clothes najis since it is a contact sport.

I do not own a washing machine yet and washing/purifying clothes by myself everytime is difficult hence, I outsource my laundry to a shop which washes and irons my clothes.

I know that they they use a washing machine to wash my clothes but I am not sure how many rinse cycles they use/source of water, etc. Can I continue giving my clothes there and will they be considered paak.