Washing Meat and Pareve Dishes in Boiling Water

I used boiling water in the sink with meat and pareve dishes. I understand that only if the meat dishes were dirty could taste transfer, and if there is doubt whether they were dirty, leniency is allowed. It seems to me that the dishes were not dirty, but I am not certain. Should I ask everyone who used the sink if they remember whether the dishes were dirty at that time, or can leniency be applied in any case?

Hello, 

If it can be easily checked, ask. 

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