Tianjin is the largest coastal city in northern China. In terms of urban population, Tianjin is the fourth largest in China, after Shanghai, Beijing, and Guangzhou. In terms of administrative area population, Tianjin ranks fifth in Mainland China. The walled city of Tianjin was built in 1404. As a treaty port since 1860, Tianjin has been a major seaport and gateway to Beijing. During the Boxer Rebellion the city was the seat of the Tianjin Provisional Government. Under the Qing dynasty and the Republic of China, Tianjin became one of the largest cities in the region. At that time, numerous European-style
Water supply and sanitation in China undertakes research. In terms of foreign NGOs, the NGO Plan, for example, works in China. It is known for having introduced for the first time the concept of Community Led Total Sanitation in China in Puchang County in Shaanxi in 2005. Over the past 20 years, China has engaged in what is possibly the largest program to build wastewater treatment plants in history. Despite the substantial achievements of this program, many challenges remain. Achievements Until the early 1980s, there was not a single municipal wastewater treatment plant in China. In that year, the country’s first municipal wastewater treatment plant was