Testing reveals dangerous levels of Blue Green Algae in Rathluba Lagoon The National Tribune The National Tribune The National Tribune Life 8 Sep 2022 10:57 am AEST Date Time Share Maitland City CouncilRecent sampling of water at Rathluba Lagoon has revealed the presence of a high concentration of blue green algae, resulting in a red alert being issued for the site Source & references /Public Release. View in full here.