Most of Belleville's drinking water is treated at the Gerry O'Connor Water Treatment Plant, located in the west end overlooking the Bay of Quinte. It operates 24 hours a day, seven days a week and treats 72 million litres of water daily, which is enough to fill Belleville's water tower 24 times over. Its distribution system serves over 40,000 residents and businesses every day through 224 km (139 miles) of water mains. Energy projects have been done at the plant. Old boilers were replaced with new models to reduce natural gas consumption. Roof insulation was upgraded to R18. And new solar energy products were brought online. Belleville was recognized as a leader in energy conservation in 2015 and 2017 by Save on Energy and Veridian, now Elexicon Energy. As part of Digital Doors Open, you can take a virtual tour and learn more about the Water Treatment Plant here.