In our 2007 report on water filters, a number of issues—including clogging, leaking, and concerns over ozone—led us to make the carafe-style Tersano Lotus LWT100 a not recommended product. Read all the details in this look at the Tersano Lotus LWT100.

In May 2008, production was halted on the LWT100. In July 2009, Tersano came out with an updated version of the LWT100, which we've tested for our May 2010 review of water filters, which will be on ConsumerReports.org and on newsstands in early April.

In our preliminary testing, the updated LWT100 has done an excellent job of removing lead and chloroform from contaminated water without sacrificing cartridge life or flow rate. No leaks have been reported, and our engineers haven't detected any presence of airborne ozone.

On the downside, the $150 LWT100 costs five to six times as much as other carafe-type water filters, some of which have performed nearly as well. And the LWT100's docking station is bulky, an issue if you have limited counter space or a low tolerance for countertop clutter.

—Daniel DiClerico

Essential information: Read "By the Numbers: U.S. Tap Water Contains Hundreds of Pollutants, says EWG" for details on drinking-water safety in this country and see our free buyer's guide to water filters.