Source: GHD Lower Murray Water Report for Monitoring of Irrigation Drainage Water
Stage 1 Report October 2009
p24 Table 2 Contaminants Posing A Potential High Risk To Aquatic Ecosystems in the Mallee
Methidathion: 0.98ug/L Lake Hawthorn, Catchment 8, Murray River, Cardross Lakes
Chlorothalonil: 7.9ug/L Lake Hawthorn and Bruces Bend
Simazine: 38ug/L Cardross Lakes, Lake Hawthorn, Murray River
Chlorpyrifos: 1.46ug/L Nangiloc-Colignan, river drainage outfalls, Bruces Bend, Lake Hawthorn
https://malleecma.vic.gov.au/jobs-tenders/tenders/Monitoring%20of%20Irrigation%20Drainage%20Water%20Stage%201%20Report%20October%202009.pdf