Posted Tuesday, June 14th, 2011 by & filed under FAQs.

As a government agency, the USGS does not comment on commercial products, but many organizations evaluate consumer products and post product reports on the Internet. NSF International (which EPA and others established for the purpose of certifying water treatment products, among other things), the Water Quality Association (the trade association of treatment companies), the U.S. Consumer Product Safety Commission, or your local health department may also provide information.