中国目前正处于改革开放的深化时期，中国社会经济发展和人民生活水平快速提升，达40年大规模的工业化和城市化，也带来了严峻生态环境挑战。伴随IT技术的突飞猛进，以及智慧城市理论的发展，通过数字化、信息化和智能化方式大幅提升生态环境治理效率的智慧环保理念，将强有力推动生态文明建设。

Since the first PITI report was published in 2009, we have evaluated China's pollution source information disclosure for ten years. Throughout the ten years of continuous data collection and evaluation, we are fortunate to witness the historic progress of China's environmental information disclosure.

On December 25, the 2018 Pollution Information Transparency Index was released in Beijing, indicating that China’s environmental supervision information disclosure continued to expand during the 2017-2018 year. Daily regulatory information disclosure by leading cities is becoming more normalized, but to achieve pollution response targets, more areas must pursue follow up actions.

The results of the 2016-2017 Pollution Information Transparency Index (PITI) assessment of 120 cities were released in Beijing on September 7, 2017, showing that over a span of ten years, environmental information disclosure in China has achieved historical progress, but enterprise information disclosure still exhibits clear shortcomings.

The 2015-2016 Pollution Information Transparency Index (PITI) assessment results for 120 cities were released in Beijing on September 12, 2016. The report shows that overall, the level of pollution information disclosure continues to climb – yet there is enormous potential for disclosure to expand on the basis of China's new Environmental Protection Law that is still waiting to be tapped.

On August 11, 2015, the Pollution Information Transparency Index (PITI) evaluation of 120 cities was released in Beijing. The evaluation indicated that on the basis of greater overall understanding about environmental information disclosure, significant progress was achieved from 2014 to 2015 for disclosure of pollution source information nationwide.

On June 9, 2014, IPE and NRDC released the 2013 Pollution Information Transparency Index (PITI) assessment results of 120 cities. The report indicates that while over one hundred Chinese cities still need to take steps towards the disclosure of monitoring information, extensive breakthroughs have been made in real-time data disclosure and the publication of full environmental impact assessment reports.