Incorporating sustainable practices into your irrigation system design can significantly reduce water waste and minimize environmental impact. Consider using rain sensors or weather stations to adjust watering schedules based on precipitation. Implementing a drip irrigation system or soaker hoses can also reduce water consumption. Additionally, using drought-tolerant plant species, mulching, and incorporating rainwater harvesting systems can further reduce water demand. Finally, regular maintenance and inspections can help identify and address leaks or inefficiencies in your system.