Appendix 5: SEWPaC risk matrix Environmental People Property Operational Critical Irreversible Death, Severe or major Predicted water damage to the damage to loss will prevent environmental injuries or severe private property. the achievement values of an trauma. of planned Significant aquatic outcomes of the Serious injury or damage to a ecosystem watering event. isolated number of and/or instances of private connected trauma causing properties. waters/other hospitalisation or parts of the Critical or major multiple medical environment; damage to public treatment cases. localised species infrastructure. extinction; Sustained and permanent loss significant public of water inconvenience. supplies. Major Long-term Isolated but Predicted water Minor damage to significant loss will injury/trauma or environmental economic and/or significantly first aid values and/or social impact. detract from the treatment case. connected planned Damage to waters/other outcomes of the private property. of trauma or parts of the watering event. ailments not environment; Some damage to requiring significant public treatment. impacts on listed infrastructure. species; Sustained public significant inconvenience. impacts on water supplies. Moderate Short-term Minor economic Predicted Short-term damage to and/or social transmission loss public environmental impact will moderately inconvenience. values and/or contained to detract from the No injuries. connected small number of planned waters/other individuals. outcomes of the parts of the watering event. environment; short-term
Appendix 5: SEWPaC risk matrix Environmental People Property Operational Critical Irreversible damage to the environmental values of an aquatic ecosystem and/or connected waters/other parts of the environment; localised species extinction; permanent loss of water supplies. Death, injuries or severe trauma. Serious injury or isolated instances of trauma causing hospitalisation or multiple medical treatment cases. Sustained and significant public inconvenience. Severe or major damage to private property. Significant damage to a number of private properties. Critical or major damage to public infrastructure. Predicted water loss will prevent the achievement of planned outcomes of the watering event. Major Long-term damage to environmental values and/or connected waters/other parts of the environment; significant impacts on listed species; significant impacts on water supplies. Minor injury/trauma or first aid treatment case. of trauma or ailments not requiring treatment. Sustained public inconvenience. Isolated but significant economic and/or social impact. Damage to private property. Some damage to public infrastructure. Predicted water loss will significantly detract from the planned outcomes of the watering event. Moderate Short-term damage to environmental values and/or connected waters/other parts of the environment; short-term Short-term public inconvenience. No injuries. Minor economic and/or social impact contained to small number of individuals. Predicted transmission loss will moderately detract from the planned outcomes of the watering event.