Wash. Rev. Code § 90.44.200
The department, as in its judgment is deemed necessary and advisable, may appoint one or more groundwater supervisors for each designated groundwater area, sub-area, or zone, or may appoint one or more groundwater supervisors-at-large. Within their respective jurisdictions and under the direction of the department, such supervisor and supervisors-at-large shall supervise the withdrawal of public groundwaters and the carrying out of orders issued by the department under the provisions of this chapter.
The duties, compensation, and authority of such supervisors or supervisors-at-large shall be those prescribed for water masters under the terms of RCW 90.03.060 and 90.03.070.
RCW 90.44.200
Purpose-Short title-Construction-Rules-Severability-Captions-1987 c 109: See notes following RCW 43.21B.001.
Water master's power of arrest: RCW 90.03.090.