Abstract
This paper explores the impact of central environmental protection inspection (CEPI) on transboundary water pollution. The triple difference method (DDD) is adopted to estimate the impact of CEPI on transboundary pollution. The results show that CEPI can significantly reduce transboundary water pollution. The transboundary pollution in the area subject to CEPI is lower than that in other areas, among which COD is weakened by 0.356 and NH3–N by 0.148. And CEPI has a stronger inhibitory effect on transboundary pollution in the eastern areas and tributaries. This study can provide reference to further promote the central environmental supervision policy, and it is significant to solve transboundary pollution.
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