The Andover Water Division was named 2009 Utility of the Year by the New England Water Works Association, a Massachusetts based not for profit organization of water works professionals. The award recognized the Town of Andover and the Andover Water Division for making significant improvements to its drinking water system.
The Andover Water Treatment Plant was one of the first in Massachusetts to implement an ozone treatment system to improve disinfection and enhance the filtration process. The original ozone system was upgraded in 2005 with latest available ozone equipment to further improve the water treatment process and efficiency. The Andover plant is one of only a handful of treatment facilities in Massachusetts utilizing ozone.
In 2008 the Andover Water Treatment Plant filtration system was also enhanced with the construction of two additional filter units and the complete rehabilitation of the six existing filtration units. The additional filtration units provide the facility with improved purification capability and redundancy.