If the railroad commission does not act within a reasonable time after a person applies for a permit or for renewal of a permit, the applicant may notify the railroad commission of his intention to file suit. After 10 days have elapsed since the day the notice was given, the applicant may file a petition in an action to compel the railroad commission to show cause why it should not be directed by the court to take immediate action.
Tex. Water Code § 29.020