PI6: Irrigation system (details below)

• Must have a weather-based controller 
• Does not water hard surfaces such as sidewalks and home foundation

Purpose

Water saving irrigation methods, such as rain sensors and shut-off devices, distribute water much more efficiently to landscaping. This conserves water because these devices are able to adjust their watering to current weather conditions. Overspray should be avoided because the excess water that cannot be absorbed will empty into the streets and local waterways, potentially impacting water quality. Therefore, irrigation systems should be designed to avoid overspray onto impervious surfaces.

Criteria 

• Design irrigation system with zones based on water needs in each planting area. Attention should be given to the sprinklers at the tops and bottoms of sloped areas to prevent runoff. 
• Provide weather station or soil moisture sensor on irrigation system
• Equip irrigation systems with technology that inhibits or interrupts operation of the irrigation system during periods of rainfall or sufficient moisture (e.g., rain sensors, soil moisture sensors)

Confirmation 

• The builder must present documentation demonstrating compliance of criteria to the EarthCraft Technical Advisor prior to submitting project for certification.
• The EarthCraft Technical Advisor will review documentation provided by the builder for compliance of criteria.