Texas Natural Resource Conservation Commission. The TNRCC is the lead environmental agency for The State of Texas. Its mission is to protect the state's human and natural resources consistent with sustainable economic development. Goals include clean air, clean water, and the safe management of waste. The TNRCC is responsible for the general supervision and oversight of water districts and utilities, including the processing of petitions to create a district and applications to approve a utility service area. In addition, the agency maintains approval authority over many utility matters including the review of most district bond issues to assure the engineering and economic feasibility of projects, as well as standby fees, impact fees, fire plans, and other district matters plus the rates charged by privately-owned and member-owned utilities.