Versions of Washington Code 70A.100.040 - Critical water supply service area -- Designation -- Establishment or amendment of external boundaries -- Procedures on LawServer 2023 Washington Code 70A.100.040 – Critical water supply service area — Designation — Establishment or amendment of external boundaries — Procedures 2022 Washington Code 70A.100.040 – Critical water supply service area–Designation–Establishment or amendment of external boundaries–Procedures 2020 Washington Code 70A.100.040 – Critical water supply service area — Designation — Establishment or amendment of external boundaries — Procedures