The answer to 'how does irrigation system work' is an irrigation system is a network of pipes, sprinklers, and valves that delivers water to your lawn and garden. The system is connected to your home's water supply and is controlled by a timer or controller that automatically turns the water on and off at scheduled times. This allows you to water your plants and grass without having to manually turn the hose on and off.
The main components of an irrigation system include the water source (usually a municipal water line), a backflow preventer to prevent contamination, a control timer or smart controller, valves that open and close to control water flow, and the sprinklers or drip emitters that distribute the water to your landscaping. The system is installed underground, with the sprinkler heads popping up when the water is turned on.