The purpose of the Water Assurance and Treaty Enforcement for Rio Grande Farmers Act, also known as the WATER for Farmers Act, is to ensure that the United States receives the water it is entitled to under the 1944 Water Treaty with Mexico. This legislation aims to address issues related to unreliable water deliveries that have caused economic harm to agricultural producers in South Texas. It also establishes a system for compensating these producers for their losses when water delivery falls short.