Water quality standards: trash: single-use carryout bags.

Under the Porter-Cologne Water Quality Control Act, the State Water Resources Control Board and the California regional water quality control boards are the principal state agencies with regulatory authority over water quality. Under the Federal Water Pollution Control Act, each state is required to identify those waters for which prescribed effluent limitations are not stringent enough to implement applicable water quality standards and to establish, with regard to those waters, total maximum daily loads, subject to the approval of the United States Environmental Protection Agency, for certain pollutants at a level necessary to implement those water quality standards.