Note: Some States Require Pressure Regulating Sprays (PRS) All spray sprinkler bodies sold in the following states will require pressure regulating stems (PRS) and EPA WaterSense certification on and after the dates listed below: Vermont: July 1, 2020 California: October 1, 2020 Colorado: January 1, 2021 Hawaii: January 1, 2021 Washington: January 1, 2021 Massachusetts: January 1, 2022 Washington, D.C.: March 15, 2022