The prevention of sports accidents must rely on a detailed knowledge of accident circumstances and risk factors. Today, very few studies have investigated in depth non-fatal drowning incidents that have occurred in public swimming pools (PSP). Learning from incidents seems likely to advance the knowledge of accident scenarios. This research study aimed to capture minor incidents that might identify safety lessons and preventive measures. Incidents of minor and major aquatic events were collected from four PSPs that had hosted 700,000 bathers per year. About 800 incidents and 300 aquatic rescues performed by lifeguards were recorded within a time frame of two and one-half years. The analysis of results offered insights both in terms of managing risk and preventing drownings. Drowning risk management could directly benefit from the results of this study. Methodological recommendations also provided suggestions to ensure the proper collection of non-fatal drowning incidents in PSPs.