Toxin risks in recycled water used for Irrigation

Toxin risks in recycled water used for Irrigation

Effluent from wastewater treatment is often stored for periods of time in open lagoons that promote growth of cyanobacteria and potentially toxin production. Toxins may then be present in the recycled water used for irrigation. It is therefore important to understand the human health risks associated with the repeated irrigation of crops with recycled water containing toxins. However, the risks are not well understood. For example, what are the risks to consumers of food grown with recycled water and can the toxin be detected in foods and does it bioaccumulate. Also is there any risk to stock feed on crops and pasture irrigated with recycled water or to humans that come in contact with irrigated crops.


This project will:

  1. Review the literature on risks to end users from toxins in recycled water used for agricultural/horticulture crops and their introduction into the human food chain. e.g. fruit and vegetables, cereal crops, pasture. What is currently understood and what further information is required.
  2. Design experiments to investigate the risks.
  3. Determine if there is evidence for the establishment of limits and guidelines for the use of recycled water for irrigation 
  4. Report on literature review and investigations

Amount being sought


Due Date

31st Mar, 2022