The Spectrum sensors offer the ideal solution for event monitoring or contaminant alarming. Using real-time spectral absorbance data, the sensor establishes a baseline or “norm” for the specific water source. Alarms are set for deviation that occurs from the established/learnt baseline, classified as an uncharacteristic event. Models can be continually enhanced and updated to incorporate factors such as multiple source waters, seasonality, or process changes which will in turn limit the probability of false positives. With various spectrum sensor models and options, a customized solution can be tailored to meet each client’s specific needs.