The purpose of this Act is to ensure food safety and agricultural sustainability; promote the advancement of farmland water conservancy activities; and improve the construction, maintenance, and management of farmland water conservancy facilities, in order to stabilize the supply of irrigation water needed for the development of agriculture, expand irrigation services; maintain agricultural production, enhance the value of utilization of farmland, and effectively manage the institutional reform of the irrigation associations.

The Competent Authority of this Act is the Council of Agriculture of the Executive Yuan.

Definitions of terms used in this Act are as follows:
1.Farmland water conservancy activities: This refers to the use of artificial or natural methods to undertake farmland irrigation, farmland drainage, or related activities in farmland water conservancy activities areas or within farmland water conservancy facilities areas as demarcated by the Competent Authority.
2.Farmland water conservancy facilities: This refers to structures and their affiliated structures used for taking water, drawing water, conveying water, storing water, drainage, or other activities needed for farmland water conservancy under the jurisdiction of irrigation associations (before the coming into effect of this Act) or newly erected by the Competent Authority (after the coming into effect of this Act).

The Competent Authority shall demarcate farmland water conservancy activities areas based on drainage basin, geographical environment, and economic benefits, and announce the demarcations to the public; the same applies to the alteration or elimination of such areas. In cases where such areas infringe on indigenous people’s regions, the Competent Authority shall consult with the central Competent Authority responsible for indigenous affairs and make public announcements of the resolutions.
The Competent Authority shall designate irrigation systems within the farmland water conservancy activities areas mentioned in the previous Paragraph, based on the condition of the water source, overall planning of the regional water resource, agricultural operational planning, and the functions of farmland water conservancy facilities. The policies shall be announced to the public; the same applies to the amendment or revocation of the policies.
Regulations governing the standards for demarcation of farmland water conservancy activities areas, their alteration, or their elimination (as mentioned in Paragraph 1 of this Article) and the standards for designating irrigation systems, their alteration, or elimination (as mentioned in the preceding Paragraph) and for other relevant matters shall be stipulated by the Competent Authority.