Low-flow shower heads sometimes called energy-efficient shower heads as they also use less energy Low-flush toilets, composting toilets and incinerating toilets. Composting toilets have a dramatic impact in the developed world, as conventional Western flush toilets use large volumes of water Dual flush toilets include two buttons or handles to flush different levels of water. Dual flush toilets use up to 67% less water than conventional toilets Faucet aerators, which break water flow into fine droplets to maintain "wetting effectiveness" while using less water.