From gas detectors to water quality assessment systems, Severn Trent Services brings you just what you need to automatically measure and control the critical parameters that affect the water and wastewater treatment process. Our range of self-cleaning, calibrating analytical instruments provides reliable operation in the harsh environments of the treatment process. And, our award-winning Eclox products are portable, ready-to-use water quality assessment systems designed to rapidly detect intentional or accidental water contamination.