 The only water that is exempt from such territorial rights is rain water, specifically before it hits the ground considering it has not touched Mexican Land.Mexico also has the rights to various natural resources similar to water such as soil, sea water created by salt mines and liquid petroleum.They also have the rights to all lagoons, natural lakes, rivers, streams, springs and other bodies of water that flow into the ocean, directly connected streams, flow in between different states, flow along borders of different countries, and extractable underground waters.