System and method for detecting contaminants in water

A method for detecting contaminants in a liquid, the method comprising:

• submerging a sensor connected to a device into a liquid;
• determining, using a processor in the device, a resistance of the device when the sensor is submerged into the liquid;
• determining, at a wireless electronic device connected to the processor via one or more wireless links, a difference between the resistance of the device when the sensor is submerged into the liquid and a set or predetermined resistance, based on the determined resistance of the device received from the processor;
• and
• determining a level of contamination in the liquid based on the difference between the resistance of the device when the sensor is submerged into the liquid and the set or predetermined resistance.

A system comprising:

• a carbon nanotube sensor configured to detect one or more contaminants in a liquid when the carbon nanotube sensor is submerged into the liquid, wherein each of one or more carbon nanotubes in the carbon nanotube sensor is doped with one of chloride ions, iodide ions, or fluoride ions;
• a microcontroller connected to the carbon nanotube sensor via one or more resistors, wherein the microcontroller is configured to determine a resistance of the system when the carbon nanotube sensor is submerged into the liquid, using the one or more resistors;
• and
• a wireless electronic device connected to the microcontroller via one or more wireless links and configured to receive the resistance of the system when the carbon nanotube sensor is submerged into the liquid from the microcontroller,
• wherein the wireless electronic device determines a level of contamination in the liquid based on a difference between the resistance of the system when the carbon nanotube sensor is submerged into the liquid and a set or predetermined resistance.