統制
Command and control policies are direct government regulations. The Clean Water Act (CWA) is designed with this kind of direct command and control regulation for point source pollution. However, command and control regulations through the CWA apply to nonpoint source pollution a lesser extent. Total maximum daily loads (TMDLs) are one tool in the CWA that directly regulates NPS effluent. As noted earlier, the CWA "requires" state governments to set TMDLs based on both point source and NPS effluent. However, conventional command and control policies could potentially influence industry structure and cause political reluctance in the event that it could bankrupt businesses.