Tex. Water Aux. Laws § 7814

Any person who may be affected thereby may appear before said court and contest the creation of said district, or contend for its creation, and may offer testimony in favor of or against the boundaries of said district to show that the proposed improvements would or would not be of any public utility, and would or would not be feasible or practicable, and the probable cost of such improvements, or as to any other matter pertaining to the proposed district.