Abstract: A chemical dispenser 10 that is attached directly to a sprinkler system which includes a reservoir 20 with an open top spout 22, a cap 26, a water inlet opening 34, a solution outlet opening 36 and a basket 38 positioned between the spout and the cap. A saddle clamp member 44 is integrally formed with the reservoir attached to a mains utility water line 46. A reservoir water inlet line 74 interfaces with the mains utility water line 46 on one end the water inlet opening of the reservoir on the other end. A solution discharge line 76, having an outlet nozzle 78, extends into the mains water inlet line and is connected through the clamp and to the reservoir. Water enters the reservoir through water inlet line and leaches a solid chemical placed within the basket to form an aqueous solution. The solution is then drawn through the discharge line by the pressure differential in the mains utility water line flow created by the restriction of the nozzle in the mains utility water line.