The Environmental Protection Authority has inspected 27 waste management sites across the state - including one in the Hunter - as part of a crack-down following two chemical spills at Queanbeyan.
EPA officers looked at Cleanaway's Rutherford site on Monday during the blitz, in which simultaneous inspections took place at locations including Homebush, Glendenning, Unanderra, Greenacre, Eastern Creek, Blacktown and Penrith among others.
EPA CEO Tracy Mackey said the environmental regulator was putting the industry on notice that it would come down hard on any organisation not taking proper care, or having proper controls in place.
"Monday's highly coordinated inspections identified a number of matters that are being investigated by the EPA," Ms Mackey said.
"Chemicals and waste can cause major environmental issues if not managed properly, which can be costly to clean-up and cause harm to human health and the environment."
The inspections identified issues with inappropriate chemical storage, poor maintenance of stormwater controls, as well as a number of other house-keeping matters which are being further investigated by the EPA.
