Lishtot is an Israeli technology company dedicated to improving water quality around the world. Using a core technology based on a newly discovered phenomenon associated with electric fields and water, Lishtot develops products that rapidly test drinking water for numerous types of contaminants and then aggregates the information to create a clearer picture of global water quality.

The Lishtot TestDrop is a handheld keychain device that detects contaminants such as E. coli, lead, arsenic, mercury, copper, chlorine, and protein at EPA and WHO standards. The two-second test displays either a blue or a red light to indicate the absence or presence of contaminants. The TestDrop connects via Bluetooth to the Lishtot mobile app, where users can track their test history; view more data on their water, including the likelihood of contamination; and distinguish between bottled water, tap water, and natural water from rivers and streams.