The QTSFT-3+ is a unique water softening system that allows precision blending of filtered water with softened water allowing the user to adjust the water hardness to the desired level. The system utilizes high-capacity ion-exchange resin to remove hardness minerals and an activated carbon filter reduces dirt and sediment down to 0.5 microns and reduces chlorine, off-taste, and odor. The system incorporates a multi-turn precision metering valve and electronic flowmeter to provide a predictable and reliable blend during the life of the media.