Abstract: This novel device and method provide immediate, direct, reliable, continuous and inexpensive warnings of potential contamination of a water supply to the user. It uses but is not limited to individual or a cascade of water pressure, turbidity, and total dissolved solids detectors to trigger audible and visual alarms and warn the user at the point of use and at remote sites, of damage to or intrusion into their water distribution system and thereby their water supply. It can be installed into any existing or new system with minimal expertise. It can be used to notify authorities of such problems without any action on the part of the user.

Abstract: A novel electronic device is described herein that can be manufactured for a cost of less than $10.00, and that can be used by an inexperienced person to measure the TDS in an aqueous solution such as tap water and the conductivity/resistivity of a variety of other substances, materials, and liquids. A phono plug connected to the device is connected to a power source and is immersed in the aqueous solution and causes an LED (in one embodiment) to illuminate to an intensity directly proportional to the TDS in the solution. A rheostat connected to a second LED and power source is then adjusted until the second LED visually is equal in illumination intensity to the first LED. A number is then read from the dial of the rheostat, which number is directly proportional to the TDS of the aqueous solution (or material) and is used as data to compare to future or past readings or to determine the actual TDS using a chart or graph.

Abstract: Included is a device for monitoring a test material. The device can include a probe configured for introduction to the test material. The probe can include a first electrode and a second electrode, where the first electrode can be positioned a predetermined distance from the second electrode. The device can also include a power source configured to provide a current to the probe. Additionally, the device can include a first data indicator and a potentiometer.