- 2009 February: Willmingongon Reservoir (Mt Macedon Water Supply). Pesticide: Pentachlorophenol
- 1978: Nufarm Laverton Industrial Waste. Pesticides: Multiple + Pentachlorophenol
- 1965: Maffra. The use of Dinoseb on pea crops. Related to Pentachlorphenol which killed people in Queensland pineapple and sugarcane crops
- 2005 October: Sunday Creek Reservoir. Pesticide detected: Pentachlorophenol.
- 2005 June – 2012 October: Broken Creek Numurkah. Pesticides detected: PCP, Atrazine, Simazine and 2,4-D