Set up fixed water quality monitoring stations in the sea area to conduct regular and long-term monitoring of changes in water quality parameters
Original indicator name: Set up fixed water quality monitoring stations in sea areas and harbors to conduct regular and long-term monitoring of changes in water quality parameters.
PSBR model type
14.1 By 2025, prevent and significantly reduce marine pollution of all kinds, in particular from land-based activities, including marine debris and nutrient pollution. 14.1.2 2020 quantitative target: maintain more than 99.5% of the water quality data reaching the standards in 8 of the testing items.
Aichi Biodiversity Targets
Target 8 By 2020, pollution, including from excess nutrients, has been brought to levels that are not detrimental to ecosystem function and biodiversity.
Many toxic metals can be found in the ocean including mercury, cadmium, lead, copper, and zinc, etc. These metal elements may exist alone or bind with organic compounds which becomes more toxic. For example, when mercury binds with carbon, it can form the neurotoxic compound methylmercury [CH3Hg]+. Although many metals naturally exist in the environment, the anthropogenic emissions caused by industrial and mining activities may increase the concentration of many toxins. If water quality data can be automatically and continuously monitored, a database of actual measured raw data should be built and made public online. This can be used to find the source of pollution, report it, and effectively stop illegal emissions of pollution.
Definition and Calculation
There are 105 water quality monitoring stations in 20 sea areas every quater. The monitoring items include water temperature, dissolved oxygen, pH, cadmium, mercury, copper, zinc, and lead. The field data of water quality items inspected annually or quarterly was compiled and presented in the form of graph and chart, to observe the trends of change in sea water quality over the years.
In 2018, the water quality monitoring results of 105 stations in 20 sea areas every quarter (yearly average1), the water temperature is 25.2℃, the pH is 8.16, the dissolved oxygen is 6.67 mg/L, and the lead is 0.000255 mg/L, Mercury<0.0003mg/L, copper 0.001261 mg/L, zinc 0.005885 mg/L, cadmium 0.0000197 mg/L.
Data Management Authorities
Ocean Conservation Administration (Environmental Protection Agency before 2018)