Abstract: A chemical infeed system for a sprinkler or irrigation system including a water carrying element or supply line such as a pipe or tube for the flow of water to one or more sprinkler heads or other outlets or openings, the infeed system including at least one receptacle or container for receiving and holding a quantity of a desired chemical; a pump having an inlet or suction side for pumping or drawing the chemical from the receptacle and a discharge or outlet side connected in liquid communication with the water carrying element or supply line for pumping the chemical into the water flow therethrough. The pump of the present chemical infeed system can be powered by conventional line current, such as 110 volt household current, and can be actuated by a relay or other device which connects the pump to a power source when a power signal is received from a controller of the sprinkler or irrigation system. The power signal may be the same voltage or a different voltage than the power source for the pump.