Water Quality in Typhoon Shelters Pollution in typhoon shelters is reflected in the water quality parameters regularly measured by the Environmental Protection Department (EPD). Figure 1 shows the Dissolved Oxygen levels in four typhoon shelters in Hong Kong. The concentrations of the Ammonia Nitrogen in the typhoon shelters are shown in Figure 2. Further information on the water quality of typhoon shelters is available in the annual report Marine Water Quality in Hong Kong.   Figure 1 - Dissolved Oxygen (DO) levels in Four Typhoon Shelters in Hong Kong [Figure 1 - Dissolved Oxygen (DO) levels at Four Typhoon Shelters in Hong Kong] See Data   Figure 2 - Ammonia Nitrogen Levels in Four Typhoon Shelters in Hong Kong [Figure 2 - Ammonia Nitrogen Levels in Four Typhoon Shelters in Hong Kong] See Data

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