Irrigreen makes Smart Sprinkler System that save ~50% water used in landscape irrigation - Over half of the water used for landscape irrigation is wasted due to inefficient mechanical sprinklers. The Irrigreen system is a patented combination of software, hardware and services. Irrigreen has over 300 installations. In this round: Band of Angels, Berkeley Angels, Sandhill Angels, HBS Angels, North Bay, Fin Ventures, Herle Ventures