Niagara Conservation. With a static water-flow rate of 1.5 gpm, the Versa dual-function kitchen aerator can reduce water consumption by up to 5,460 gallons per year, the company says. The product delivers a constant output of water regardless of fluctuating water pressure and can switch spray settings between aerated-bubble and needle sprays. 800.831.8383. www.niagaraconservation.com.