Instapure R8 ULTRA Tap Water Filter (White), Tested & Certified to ANSI/NSF 42 & 53 For Maximum Reductions including Chlorine, Lead, Microbial Cysts (such as Cryptosporidium), and VOCs ANSI/NSF Certified 42 for the reduction of Chlorine (Class II) taste and odor. ANSI/NSF Certified 53 for the reduction of Cysts, Lead and 53 other contaminants. Operating Pressure (psi) - 20 - 100 . Also known as F8CR-1ES No tools necessary for installation. Refer 'Product Specification' section for user-manual. Not for sale in California. Save Space and filter up to 5X more water than typical Pitcher Filter. Save Money and the Environment vs. Bottled water! 99%of Lead 99%of Microbial Cysts 99%VOC&#039;s 97%of Chlorine Taste &amp; Odor