US lawWashingtonRegulationsTitle 173 — ECOLOGY, DEPARTMENT OFChapter 173-162 — REGULATION AND LICENSING OF WELL CONTRACTORS AND OPERATORS173-162-020WAC 173-162-020WAC 173-162-020. To whom do these regulations apply?Last amended: 1998Year: 2026Length: 23 wordsOfficial source These regulations apply to all well contractors and operators who are contracting for well construction or constructing wells in the state of Washington.PreviousWAC 173-162-010NextWAC 173-162-025