Next time you pay your water and sewage bill, consider this: Approximately 40 percent of all the water used in your home gets flushed down the toilet. That's a staggering amount, and water is becoming an increasingly precious and costly commodity in most parts of the country. To help homeowners reduce water consumption and save money, Sloan Valve--in association with WaterSaver Technologies--recently introduced the Aqus Greywater System, an ingeniously designed device that diverts drain water from the bathroom sink to the toilet. Here's how it works: