Texas Water Law | RL Wilson, P.C. Law Firm, R L Wilson, P.C. is a Texas law firm dedicated to aggressively advocating our clients' interests in a wide array of civil and administrative legal matters throughout the State. While we maintain a fervent interest in water law, our practice is varied and we represent a diverse assortment of interests. Over the years, we have represented major corporations, governmental entities, small companies, associations and individuals at every stage of the legal process, and on both sides of the docket. At.