A major clean water plant upgrade has put the New Hampshire Town of Newmarket on the map for success in nitrogen removal

The team in Winooski takes care of wastewater, drinking water and stormwater with four people, a frugal budget, and nearly a century of combined experience.

Joining the U.S. Air Force led Mark Hierholzer to the clean-water industry. It has turned out to be a Hatfield-Award-winning career.