IntelliSplash(tm) is a water purity tester and tracker device that connects via bluetooth to an Arduino device. Instructions on how to build the Arduino device are available as a link in the app.
IntelliSplash allows the user to leave the bluetooth device attached to the water source for an extended period of time. IntelliH2O automatically creates a data entry in an auto-generated graph as it gathers data from the sensor.
IntelliSplash goes off of a scale with four categories based on Parts-per-Million (ppm)
Green - Good to Drink, (50ppm or less)
Yellow - Drinking is ok, but dont risk it if there is another, better source of water. (> 50ppm)
Brown - Bad, do not drink. (>100ppm)
Red - Legally undrinkable by US standards. (> 500ppm)