By a rotary replacement installation design, the filter is convenient and fast to install. Filter replacement can be completed within 3 seconds. The filter cap adopts an automatic water shut-off design, and water shut-off is not required during filter replacement. 
 The under sink water filter is certified by WQA against NSF/ANSI 372 Standard, the product is made from BPA-free and lead-free premium materials and is definitely a quality choice. The product is firmer and can bear higher water pressure based on 100,000 times water hammer testing. 
 By its high flow rate, the 17UA under sink water filter meets your water demands of the main faucet, such as drinking water, cooking, vegetable and fruit cleaning, plate cleaning, etc. 
 According to the EPA, an American family uses 18-22 gallons of tap water every day. Waterdrop 17UA water filter can produce 22 gal of purified water every day, which is sufficient enough to meet your household water demands. 
 References: 
 [1] *The service life mentioned above is subject to chlorine reduction. Actual result varies according to the local water quality. 
 [2] *Information is based on CARBON BLOCK MANUFACTURING by WQP, June 2001. 
 *Information is based on South African Journal of Chemical Engineering, Volume 28, April 2019, Pages 39-45.