US lawWashingtonRegulationsTitle 246 — HEALTH, DEPARTMENT OFChapter 246-274 — GREYWATER REUSE FOR SUBSURFACE IRRIGATION246-274-465WAC 246-274-465WAC 246-274-465. Effective dateLast amended: 2011Year: 2026Length: 9 wordsOfficial source This chapter shall take effect on July 31, 2011.PreviousWAC 246-274-460