The EQP Water TDS Monitor is a compact, reliable sensor that readily interfaces with existing color indicator systems. The minimally invasive design enables attachment to a wide range of indicator bulbs. The color of the indicator bulbs is monitored with a photosensitive element, and the status of the bulb is transmitted to the gateway over the secure, local EQP sensor network. Real time notification permits rapid response to water quality issues and potential system failures, which minimizes down time, service costs, and costly malfunctions. TDS status and alerts are available 24/7 from any mobile device.