Water quality monitoring system

The present invention addresses the problem of realizing non-contact water quality monitoring using a captured image from a monitoring camera, and detecting water quality abnormalities with high accuracy by suppressing the influence of a state change of a monitored object. [Solution] A water quality monitoring system according to an embodiment of the present invention is provided with: a water quality abnormality detection unit which uses an object detection model, recognizes a water surface region from a captured image of a water quality monitoring object output from a monitoring camera, and determines a water quality abnormality based on the state of the recognized water surface region; and a monitoring result output unit that outputs the monitoring result. Consequently, non-contact water quality monitoring is achieved, and water quality abnormalities can be detected with high accuracy even if there is an influence of a change in the state of the object to be monitored (water level fluctuations, changes in