Chongqing University passed the international accreditation of Chartered Institution of Water and Environmental Management (CIWEM) for the BSc program Water Science and Engineering under the background of educational internationality and program improvement. We analyzed the training objectives and specifications issued by Chinese authorities and the mandatory competences issued by CIWEM, and proposed to make good use of the international experience to improve teaching level and cultivate excellent undergraduates according to the requirements for training high-level talents.