Section 22a-66-3 - Application of pesticides(a) No person may use a federally restricted-use pesticide except under the supervision of a certified applicator.(b) There shall be a check valve or anti-siphoning device on all hoses used to draw water from a water supply if a reversal of flow would cause any pesticide to enter into the hose. The discharge side of a pump shall not be connected to any water system.(c) All filler hoses used as the intake in drawing water from water courses shall be covered except when in use, in order to prevent pesticide contamination.(d) No water to be used in pesticide applications shall be drawn from any stream or pond leading to a potable water supply reservoir.Conn. Agencies Regs. § 22a-66-3