Council bosses confirmed some venues - which reopened their outdoor spaces last Monday - have been visited by officers due to reports of non-compliance.
Julia Burrows, Barnsley’s director of public health, said: “On the whole we have seen a positive and safe approach from premises welcoming people into beer gardens.
“Where we have had reports of non-compliance we have visited or contacted premises to give them advice and support.
“Where necessary, we will take enforcement action.”