RCW 90.03.090: Water master's power of arrest.

The water master shall have the power, within his or her district, to arrest any person in the act of violating any of the provisions of this chapter and to deliver such person promptly into the custody of the sheriff or other competent officer within the county and immediately upon such delivery the water master making the arrest shall, in writing and upon oath, make complaint before the proper district judge against the person so arrested.