Filter ALL tables in PowerQuery based on parameter?

Hi community, 

I have about 20 tables where in each of the tables have a Customer column. There are three customers C1,C2,C3, if I only want to load the rows in each tables containing C1 in the Customer column, is there then a way to filter ALL 20 tables at the same time without having to manually filter all tables one by one ?

Thanks in advance 

Best regards

Elijah