Six thousand miles of plastic tubing carry the sap from the trees to pump stations. These are called reverse-osmosis houses. This is where the sap is collected and the water in the sap is filtered ...

Miles of plastic tubes attached to vacuum pumps lead to an assembly line of reverse osmosis machines, oil-fueled evaporators ...

Big Tree Maple’s reverse osmosis machine, a machine that allows producers to take most of the water out of the sap and produce more syrup. P-J photo by Sara Holthouse Another new part of the process ...