Versions of See prior versions of a law on LawServer 2023 Washington Code 70A.130.010 – Establishment of standards for chemical contaminants in drinking water by state board of health 2022 Washington Code 70A.130.010 – Establishment of standards for chemical contaminants in drinking water by state board of health 2020 Washington Code 70A.130.010 – Establishment of standards for chemical contaminants in drinking water by state board of health