A person has standing if (1) he has sustained, or is immediately in danger of sustaining, some direct injury as a result of the wrongful act of which he complains; (2) he has a direct relationship between the alleged injury and claim sought to be adjudicated; (3) he has a personal stake in the controversy;
(4) the challenged action has caused the plaintiff some injury in fact, either economic, recreational, environmental, or otherwise; or (5) he is an appropriate party to assert the public's interest in the matter, as well as his own.
Willis v. Marshall, (Tex. App. - El Paso, 2013)