From http://www.nsf.org.
If you manufacture, sell or distribute water treatment or distribution products in North America, your products are required to comply with NSF/ANSI Standard 61: Drinking Water System Components – Health Effects by most governmental agencies that regulate drinking water supplies. Developed by a team of scientists, industry experts and key industry stakeholders, NSF/ANSI 61 sets health effects criteria for many water system components including plumbing devices (faucets, drinking fountains.)
NSF/ANSI 61 testing covers all products with drinking water contact from source to tap,
and determines what contaminants may migrate or leach from your product into drinking water. It also confirms if they are below the maximum levels allowed to be considered safe.
Because of concerns about the leaching of lead and other impurities into drinking water, all kitchen and bathroom faucets sold in the U.S. are required to meet the lead leaching requirements of American National Standard NSF/ANSI 61. Certification to this standard is usually noted on the product packaging as well as on the actual product. If you don’t see a reference to NSF/ANSI 61 certification on the product or packaging, the faucet may not be intended for drinking water use.
Avoid drinking water from outdoor spigots, laundry tub faucets, bathtub spigots and utility sinks. Because these products are not intended for dispensing drinking water, they are not required to meet the same material safety standards as kitchen and bathroom faucets.
Both the faucet manufacturers offered by ANO, Eclipse Stainless and Freendo, meet these standards and carry ANSI 61 certification.
