Lu'an City, Anhui Province.

1. Good quality. Lu'an City in Anhui Province is located in the Dabie Mountains area, with good mountains, beautiful scenery, and water that nourishes people. The water in the Dabie Mountains is of the best quality, with a water quality index of 3.85, ranking 6th in the country. The water quality in Ordos, Inner Mongolia is sweet, with a water quality index of 3.46, ranking 8th in the country.

2. The environment is good. Lu'an City has a good environment, strong environmental governance capabilities, and low water pollution. Inner Mongolia's Ordos has many breeding areas, which pollute the water quality to a certain extent. In comparison, the water quality in Lu'an City is better.