Abstract Hydrogen Sulfide (H2S) causes severe problems and creates operational challenges throughout the publicly Owned Treatment Works (POTW). Equipment corrosion, odor complaints, and operator/public safety are some of the challenges routinely encountered with H2S. Typically, manual sampling and responsive chemical dosing is used to control H2S, but is this the most efficient way of managing and optimizing POTW mitigation practices? To accomplish this, utilities need quicker, real-time information to fully understand how H2S behaves throughout the POTW over time. New H2S sensor technologies enable operators to continuously measure H2S in both liquid and gas phases within the POTW. Through their installation, they give a complete and dynamic overview of H2S impacts, providing a path to proactive and data-driven approaches to H2S management. Trends and trouble-spots can be identified through continuous monitoring and proactively combat H2S before it becomes a problem. Morristown Utilities has begun this journey of optimized chemical dosing, minimized odor complaints, prevention of equipment corrosion and premature failure along with operator protection and public safety using this automated technology. These probes are robust, C1D1 rated, and can operate in remote locations. They are easily cleaned, maintained, and simple to calibrate. Importantly, their successful operation has been proven with multiple case studies documenting their efficacy.