JNF has played a vital role in the environmental development of Israel since the formation of the state. From buying and sowing the land and planting trees in the early days to investing in sustainable agriculture today, JNF has helped to ensure a viable country for its nearly 9 million citizens. JNF has helped develop reservoirs to harvest floodwater and enrich groundwater, established water treatment facilities to impound purified wastewater for use in irrigation and rehabilitate rivers to restore aquatic habitats for plants and animals and create new recreation areas.