The CU-A4 offers simpler, more compact water filtration than Reverse Osmosis (RO) systems, making it ideal for general use. Its advanced 4-stage design combines Activated Carbon, Ultra Filtration, and KDF filters to remove a wide range of contaminants, including lead, arsenic, iron, nickel, chromium, cadmium, calcium, aluminum, mercury, chlorine, hydrogen sulfide, and more. Enjoy clean, great-tasting water without the cost or waste of bottled water.
Sean was really helpful and responsive to an inquiry. System came quickly. Water quality is great! My family is enjoying this product and we are looking to purchase an additional unit for the farm. Thanks ISpring!. Snowbaby76. Waukesha, WI. Thu Aug 28 2025