WAC 173-226-020
WAC 173-226-020. Permit required
No pollutants shall be discharged to waters of the state from any point source, except as authorized by an individual permit issued pursuant to chapters 173-216 and 173-220 WAC, or as authorized through coverage under a general permit issued pursuant to this chapter. Coverage under a valid general permit issued prior to the existence of this chapter will satisfy the permit requirements of this section.