One Sensor Saves 69,000 Gallons Per Year An excellent overview from H2O Global News details how Halogen’s MP5™ sensor for drinking water saves 69,000 gallons of treated water per year per sensor. These savings gives incredible benefits to operators in areas under water restrictions. The article has a short background on the development of both the amperometric sensor and the patented self-cleaning system Halogen created to reduce required maintenance to a