It is legal to contract the reservoir to raise fish. According to the national laws and regulations, the drinking water source reservoir can be contracted for fish farming, but it is subject to strict conditions: according to the relevant laws and regulations, the water surface of the reservoir as a drinking water source can be contracted to individuals to engage in fish farming and operated in a clear water ecological way in accordance with the principle of "scientifically utilizing biological resources and purifying and protecting the water quality of the reservoir ecosystem". However, in the process of aquaculture, in order to protect the water quality, the contractor shall not raise fish in cages or put any feed or fertilizer into the reservoir area.