To optimize your sprinkler system for water efficiency and conservation, implement measures such as smart controllers, rain sensors, and soil moisture sensors. These technologies can adjust watering schedules based on weather data, soil moisture levels, and evapotranspiration rates. Additionally, use low-flow nozzles, check for leaks and clogs, and adjust sprinkler heads to minimize overspray and runoff. Consider upgrading to a drip irrigation system or incorporating drought-tolerant plants into your landscape design.