The committee said the water pollution clean-up needs investigation
Guernsey's scrutiny committee is to investigate the way a clean-up operation was carried out after the island's water supply was polluted.
Perfluorooctane Sulfonate (PFOS) entered the water supply after an accident at the airport in 2002.
Chairman Barry Brehaut said the issue was one of "public importance".
He has asked the departments involved in the clean-up operation for details in order to decide an appropriate course of action.
Deputy Brehaut wrote to the Public Services and Health & Social Services Departments to establish how they identified the pollution, at the Lovers Leap outfall and the Beau Vallee, and how the problems were addressed.