What's the matter with the national water quality ranking? What's the situation with the national water quality ranking? Many friends don't know. Let's take a look with Xiaobian.
What's the matter with the national water quality ranking
What's the water quality of the city you live in? Yesterday, the authoritative department gave the result.
The water environment quality ranking of national surface water assessment sections of cities at prefecture level and above in China was published for the first time, involving 333 cities and 2050 national surface water assessment sections, mainly distributed in the seven major river basins of Yangtze River, Yellow River, Pearl River, Songhua River, Huaihe River, Haihe River and Liaohe River, and the main rivers and key lakes in the three major areas of Northwest River, Southwest River and Zhejiang Fujian.
Hu Kemei, deputy director of the monitoring department of the Ministry of ecological environment, told reporters that the Ministry of ecological environment publishes the national air quality situation every month and lists the top 20 and bottom 20 cities of 168 key cities, which has played an important role in promoting the improvement of national air quality.
Hu Kemei said that the release of the 'water ranking' list is also to give full play to the forced role of the ranking of water environment quality of urban national surface water assessment sections, objectively reflect the effectiveness and efforts of local governments in water pollution prevention and control, and further promote the transformation of China's water environment management from focusing on total pollutant emission reduction in the past to focusing on improving water environment quality.
Hu Kemei said that the publicity of ranking information can also guarantee the public's right to know, participate in and supervise the environment, accelerate the national water ecological environment protection, implement local water pollution prevention and control responsibilities, and continuously improve the level of drinking water safety.
The first is the ranking of water environment quality of assessment section to objectively reflect the water quality of assessment section; the second is the ranking of changes in water environment quality of assessment section to truly reflect the local achievements in improving water environment quality. 'said hukmay.
Ji Xiaoyan, a researcher at the water department of China national environmental monitoring station, told reporters, "this also means that some cities that are lower in the ranking may be higher in the ranking of changes because of the obvious improvement of water environment. '
In April 2015, the State Council issued the "water pollution prevention and control action plan" (hereinafter referred to as the "water ten articles"), which requires "strengthening public participation and social supervision". Taking into account factors such as water environment quality and compliance, the state publishes the list of the worst and best 10 cities and the water environment status of provinces (autonomous regions and cities) every year. For cities with poor water environment, if they still fail to meet the requirements after rectification, the honorary titles of environmental protection model city, ecological civilization construction demonstration area, water-saving city, garden city and health city shall be cancelled and announced to the public.
Wang Yeyao, deputy director of China environmental monitoring station, said that the cities ranked included all cities at prefecture level and above with national surface water assessment sections. The ranking does not involve urban groundwater, black and odorous water, as well as smaller rivers, lakes or reservoirs without national surface water assessment section.
According to the technical regulations on the ranking of urban surface water environmental quality (for Trial Implementation), the entry-exit sections involving upstream and downstream cities are included in the ranking of upstream cities; the sections with round-trip flow are ranked according to the annual mainstream direction; the sections involving two or more city boundary rivers are also included in the ranking of all cities involved.
If there is no monitoring data due to especially serious, major floods and droughts, meteorological, earthquake, geological and other natural disasters, perennial natural seasonal rivers and unreasonable development and utilization of other upstream cities, the urban water quality index shall be calculated based on the monitoring data of the actual water months of the section.
Ji Xiaoyan told reporters that the ranking method is based on the city water quality index, or cwqi. 21 indexes except water temperature, fecal coliform and total nitrogen in Table 1 of environmental quality standard for surface water (GB3838-2002) are adopted for calculation of river water quality index, which is consistent with evaluation and assessment indexes of surface water.
Hu Kemei said that from the first quarter of 2019, the Ministry of ecological environment will carry out the ranking of water environment quality status and changes of national surface water assessment sections of cities at prefecture level and above every quarter, and publicly release the list of the top 30 cities with relatively good water environment quality and the bottom 30 cities with relatively poor water environment quality of national surface water assessment sections, which is comparable to the same period of last year The list of the better top 30 cities and the relatively poor bottom 30 cities, as well as the name of the water body of the corresponding national surface water assessment section of the city.
Top 30 cities and water bodies in the national assessment section water quality change from January to march in 2019