AGO Opinion Topics: ADOPTION WATER QUALITY STANDARDS WATERS STATE

(1) The water pollution control commission has the authority to establish water quality standards for waters of the state under RCW 90.48.035, including waters found in canals, drains, wasteways and reservoirs of irrigation and drainage systems located within the state.  (2) Persons who propose to discharge wastes of industrial and commercial operations into canals, drains, wasteways or reservoirs or irrigation and drainage systems are required by RCW 90.48.160 to obtain a waste discharge permit prior to such a discharge.