Southeast Iowans are doing their part, one yard at a time, to save water, soil and energy. Through a program called Backyard Conservation, Fairfield residents are learning to collect rainwater, compost food waste and plant edible landscapes. They’re practicing sustainability in every way they can, according to Scott Timm, an ISU Extension community and economic development specialist and Fairfield’s sustainability coordinator. During a spring compost day, the city offered for sale 150 composters. Timm wasn’t surprised that 93 sold immediately to residents determined to send less waste to the landfill.