Use a Certified Irrigation Professional

An EPA-certified professional can deliver a better irrigation system that saves water.
The Environmental Protection Agency has a national list of irrigation professionals who have completed a certification process through the EPA's WaterSense program.

Green points

LEEDLeadership in Energy and Environmental Design. LEED for Homes is the residential green building program from the United States Green Building Council (USGBC). While this program is primarily designed for and applicable to new home projects, major gut rehabs can qualify. -H: Up to 4 points for high-efficiency irrigation systems.

NGBSNational Green Building Standard Based on the NAHB Model Green Home Building Guidelines and passed through ANSI. This standard can be applied to both new homes, remodeling projects, and additions. /ICC-700: Up to 10 points for efficient irrigation (801.7); up to 8 points for rainwater harvesting (801.8); 2 points for irrigation zoning (801.9); 4 points for smart irrigation controller
-OR-
15 points for no irrigation system with green landscape plan (801.10); 5 points for gray-water irrigation use (802.1).

Learn more in the Green Building Encyclopedia:

GREEN IRRIGATION
LANDSCAPE: NATIVE PLANTS AND SOIL

From the Green Primer

What is Xeriscape, and why is it important?