Towel fell into reservoir!

[AWildZacR]

Hi everyone, this morning I was filling a 40 gallon bin with ro/di water to mix saltwater with. Due to a broken lid I was using a (clean) towel to cover the the bin, and half of it fell in for about 15 mins.
Should I be worried about detergent or contamination?

 

[Gonebad395]

If it was clean I would t really worry about it but if it’s going to worry you dump resivour and refill.