Water is a fundamental human need. A person requires at least 20 to 50 liters of clean, safe water a day for drinking and several other important purposes. The importance of clean drinking water cannot be overstated. Therefore, the fact that billions of people worldwide do not have access to safe drinking water is startling.
Part of the issue is the inability to check if water is clean or not.
One startup is attempting to solve the issue with a tiny device.
Lishtot’s Testdrop, a handheld keychain consumer device that instantly determines if water is safe to drink just by analyzing the electric field around it, could be the answer.
Testdrop does not use any strips, microfluidics and most importantly no toxic chemicals. It can detect contaminants such as lead, E. coli, and chemicals like PFOA/PFOS at EPA and WHO guidelines.
The device provides a “drink or do not drink” indication in only 2 seconds. The device is also very easy to operate.
The operation is based on the electromagnetic fields that surround everything. Water creates its own local field, which is measured by moving the TestDrop through it. Clean water emits a slightly different field than contaminated water.
The device has been subjected to third-party testing and according to TechCrunch, it is effective detecting even tiny amounts of lead and protein instantly and with 100 percent accuracy and no false positives or negatives.
TestDrop bluetooths to the Lishtot app which is available in app stores.
The device doesn’t need to check its data against the cloud in order to give a drink/don’t drink response. However, Lishtot runs a service that tracks tests done with its devices, if users choose to submit them. The database could become useful down the road for ordinary users, who want to find clean water sources and governments or companies, who may want to watch for trends.
Users will be able to report problems directly to the utility, as well.
TestDrop is powered by a replaceable watch battery that should last for years even with heavy everyday use.
The devices will cost $50 and will soon be available to order on Lishtot’s website.
The two-year-old startup has more water purity-related technology on the way, but for now, the TestDrop is its main product.