Water Efficient Irrigation Products - the majority of irrigation systems are utilizing basic water delivery methods. These methods and products do deliver water but they are limited to there design; manufacturer's have recognized this over the past couple of decades and have developed tools  and products that can be from 5-60% more efficient. Examples of these products are:

Pressure Regulating Devices  - 6-8% reduction for every 5 psi lowered (IE. 60 psi operating system lowered to 30 psi for a spray or mister head is a water savings of 36 to 48%).

High Efficiency Nozzles  - 25%+ reduction for providing uniformed distribution and by reducing over-spray.

Weather-Based Control Systems  - 20-50% reduction in water use due to automatic adjustments, with the irrigation schedules based on climatic and environmental conditions.