Mahwah Fire Company No. 3 operates in the Northeast area of Mahwah known as Masonicus section.
Fire Company No. 3, was an independent fire company operating in the Northeast area of Mahwah known as Masonicus. The township gave the Masonicus School to the Masonicus Fire Department thus incorporating it into the townships fire department in 1947. However the members waited until 1968 to formally join the Mahwah Fire Department. Company No. 3 houses a pumper and the Fire Police Unit. They also have the Air 3 that is used to fill the breathing air cylinders.