The Aquasana EQ-WELL-UV Rhino Whole House Filter System treats and significantly reduces the bacterial contaminants and local pollutants specific to well water. Enjoy clean water, rich in minerals and lacking contamination, from every faucet in your home for just pennies a day. We recommend that you get your water tested to determine its specific contaminant and bacterial make-up, and then we can customize your system to meet your specific needs. The Well Water Whole House Filter comes standard with a UV filter to deal with harmful bacteria like e. coli, coliform bacteria and viruses. The filter reduces >97% of chlorine, bad taste and odor, elevated levels of hydrogen sulfide, and excess iron that causes rust stains, among other contaminants. The large 20pre-filter removes dirt and microscopic particles down to five microns, and a .35-micron post-filter is available if you have particularly cloudy water. Enjoy great-tasting and odor-free filtered water from every tap or shower in your home. Unlike water softeners, the EQ-WELL-UV does not require salt or back-flushing to operate. The filtration tanks last for five years or 500,000 gallons. The Aquasana Rhino EQ-WELL-UV Whole House Filter system comes with a 90-day satisfaction guarantee and a five-year warranty. If you're not pleased with your whole house filter, send it back in the first 90 days and receive a full refund on the purchase price, no questions asked. Compare to Culligan and other water softeners, and you'll see why the reviews agree that Aquasana has great filtration technology at a great value. For a powerful water filter at a great price, think Aquasana. It means healthy water. Not Aquasauna, Aqua Sana or Aguasana. Made in the USA by Aquasana, Inc., a Texas Corporation.