Sec. 21.206. STUDIES AND RESEARCH. The district shall: (1) study and research the control of water pollution and waste disposal in the district; (2) cooperate with the commission in any study; and (3) use the results of the studies. Added by Acts 2007, 80th Leg., R.S., Ch. 920 (H.B. 3166), Sec. 1.01, eff. April 1, 2009.