UV has proven to be a quick, reliable, and cost-effective method of water treatment for both point-of-use (POU) and point-of-entry (POE) systems. Being a chemical-free, environmentally friendly, and affordable UV water filter system, iSpring's upgraded UVF55FS UV water filter can protect the whole house against water concerns commonly found in private wells. For houses that get water from municipal water suppliers, this UV light water filter provides an effective solution against chlorine-resistant substances so that you know you and your loved ones get clean and worry-free water for drinking, washing, showers and more. Build your trust in water for your entire household by removing risks unable to be addressed by your municipal treatment plant or those born with well water or other natural water sources. This whole house UV light water filter is a perfect last step to add to your whole house water filtration system and give you the peace of mind of knowing you can trust your water.