Eupithecia impurata is a moth of the family Geometridae. It is found from the mountainous areas of western, eastern and southern Europe up to Western Asia.
The wingspan is 19–24 mm. Adults are on wing from May to August and again from September to October in two generations per year.
The larvae feed on the flowers and fruit of Campanula cespitosa, Campanula cochleariifolia and Campanula rotundifolia.